Add m-esr52 at 52.6.0

author: Matt A. Tobin <mattatobin@localhost.localdomain> 2018-02-02 04:16:08 -0500
committer: Matt A. Tobin <mattatobin@localhost.localdomain> 2018-02-02 04:16:08 -0500
commit: 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree: 10027f336435511475e392454359edea8e25895d /testing/web-platform/tests/dom/nodes
parent: 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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262 files changed, 16063 insertions, 0 deletions
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-appendChild.html b/testing/web-platform/tests/dom/nodes/CharacterData-appendChild.html
new file mode 100644
index 000000000..db7d51b91
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-appendChild.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Node.appendChild applied to CharacterData</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-appendchild">
+<link rel=help href="https://dom.spec.whatwg.org/#introduction-to-the-dom">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function create(type) {
+  switch (type) {
+    case "Text": return document.createTextNode("test"); break;
+    case "Comment": return document.createComment("test"); break;
+    case "ProcessingInstruction": return document.createProcessingInstruction("target", "test"); break;
+  }
+}
+
+function testNode(type1, type2) {
+  test(function() {
+    var node1 = create(type1);
+    var node2 = create(type2);
+    assert_throws("HierarchyRequestError", function () {
+      node1.appendChild(node2);
+    }, "CharacterData type " + type1 + " must not have children");
+  }, type1 + ".appendChild(" + type2 + ")");
+}
+
+var types = ["Text", "Comment", "ProcessingInstruction"];
+types.forEach(function(type1) {
+  types.forEach(function(type2) {
+    testNode(type1, type2);
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-appendData.html b/testing/web-platform/tests/dom/nodes/CharacterData-appendData.html
new file mode 100644
index 000000000..d754218bf
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-appendData.html
@@ -0,0 +1,70 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>CharacterData.appendData</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-appenddata">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function testNode(create, type) {
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.appendData("bar")
+    assert_equals(node.data, "testbar")
+  }, type + ".appendData('bar')")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.appendData("")
+    assert_equals(node.data, "test")
+  }, type + ".appendData('')")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+    node.appendData(", append more 資料，測試資料");
+    assert_equals(node.data, "test, append more 資料，測試資料");
+    assert_equals(node.length, 25);
+  }, type + ".appendData(non-ASCII)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.appendData(null)
+    assert_equals(node.data, "testnull")
+  }, type + ".appendData(null)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.appendData(undefined)
+    assert_equals(node.data, "testundefined")
+  }, type + ".appendData(undefined)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.appendData("", "bar")
+    assert_equals(node.data, "test")
+  }, type + ".appendData('', 'bar')")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_throws(new TypeError(), function() { node.appendData() });
+    assert_equals(node.data, "test")
+  }, type + ".appendData()")
+}
+
+testNode(function() { return document.createTextNode("test") }, "Text")
+testNode(function() { return document.createComment("test") }, "Comment")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-data.html b/testing/web-platform/tests/dom/nodes/CharacterData-data.html
new file mode 100644
index 000000000..b3b29ea4d
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-data.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>CharacterData.data</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function testNode(create, type) {
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+    assert_equals(node.length, 4)
+  }, type + ".data initial value")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = null;
+    assert_equals(node.data, "")
+    assert_equals(node.length, 0)
+  }, type + ".data = null")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = undefined;
+    assert_equals(node.data, "undefined")
+    assert_equals(node.length, 9)
+  }, type + ".data = undefined")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = 0;
+    assert_equals(node.data, "0")
+    assert_equals(node.length, 1)
+  }, type + ".data = 0")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "";
+    assert_equals(node.data, "")
+    assert_equals(node.length, 0)
+  }, type + ".data = ''")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "--";
+    assert_equals(node.data, "--")
+    assert_equals(node.length, 2)
+  }, type + ".data = '--'")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "資料";
+    assert_equals(node.data, "資料")
+    assert_equals(node.length, 2)
+  }, type + ".data = '資料'")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "🌠 test 🌠 TEST";
+    assert_equals(node.data, "🌠 test 🌠 TEST")
+    assert_equals(node.length, 15)  // Counting UTF-16 code units
+  }, type + ".data = '🌠 test 🌠 TEST'")
+}
+
+testNode(function() { return document.createTextNode("test") }, "Text")
+testNode(function() { return document.createComment("test") }, "Comment")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-deleteData.html b/testing/web-platform/tests/dom/nodes/CharacterData-deleteData.html
new file mode 100644
index 000000000..02ecbe6ab
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-deleteData.html
@@ -0,0 +1,95 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>CharacterData.deleteData</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-deletedata">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function testNode(create, type) {
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_throws("INDEX_SIZE_ERR", function() { node.deleteData(5, 10) })
+    assert_throws("INDEX_SIZE_ERR", function() { node.deleteData(5, 0) })
+    assert_throws("INDEX_SIZE_ERR", function() { node.deleteData(-1, 10) })
+    assert_throws("INDEX_SIZE_ERR", function() { node.deleteData(-1, 0) })
+  }, type + ".deleteData() out of bounds")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(0, 2)
+    assert_equals(node.data, "st")
+  }, type + ".deleteData() at the start")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(2, 10)
+    assert_equals(node.data, "te")
+  }, type + ".deleteData() at the end")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(1, 1)
+    assert_equals(node.data, "tst")
+  }, type + ".deleteData() in the middle")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(2, 0)
+    assert_equals(node.data, "test")
+
+    node.deleteData(0, 0)
+    assert_equals(node.data, "test")
+  }, type + ".deleteData() with zero count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(2, -1)
+    assert_equals(node.data, "te")
+  }, type + ".deleteData() with small negative count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(1, -0x100000000 + 2)
+    assert_equals(node.data, "tt")
+  }, type + ".deleteData() with large negative count")
+
+  test(function() {
+    var node = create()
+    node.data = "This is the character data test, append more 資料，更多測試資料";
+
+    node.deleteData(40, 5);
+    assert_equals(node.data, "This is the character data test, append 資料，更多測試資料");
+    node.deleteData(45, 2);
+    assert_equals(node.data, "This is the character data test, append 資料，更多資料");
+  }, type + ".deleteData() with non-ascii data")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "🌠 test 🌠 TEST"
+
+    node.deleteData(5, 8);  // Counting UTF-16 code units
+    assert_equals(node.data, "🌠 teST");
+  }, type + ".deleteData() with non-BMP data")
+}
+
+testNode(function() { return document.createTextNode("test") }, "Text")
+testNode(function() { return document.createComment("test") }, "Comment")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-insertData.html b/testing/web-platform/tests/dom/nodes/CharacterData-insertData.html
new file mode 100644
index 000000000..5777327c2
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-insertData.html
@@ -0,0 +1,90 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>CharacterData.insertData</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-insertdata">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function testNode(create, type) {
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_throws("INDEX_SIZE_ERR", function() { node.insertData(5, "x") })
+    assert_throws("INDEX_SIZE_ERR", function() { node.insertData(5, "") })
+  }, type + ".insertData() out of bounds")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_throws("INDEX_SIZE_ERR", function() { node.insertData(-1, "x") })
+    assert_throws("INDEX_SIZE_ERR", function() { node.insertData(-0x100000000 + 5, "x") })
+  }, type + ".insertData() negative out of bounds")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.insertData(-0x100000000 + 2, "X")
+    assert_equals(node.data, "teXst")
+  }, type + ".insertData() negative in bounds")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.insertData(0, "")
+    assert_equals(node.data, "test")
+  }, type + ".insertData('')")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.insertData(0, "X")
+    assert_equals(node.data, "Xtest")
+  }, type + ".insertData() at the start")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.insertData(2, "X")
+    assert_equals(node.data, "teXst")
+  }, type + ".insertData() in the middle")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.insertData(4, "ing")
+    assert_equals(node.data, "testing")
+  }, type + ".insertData() at the end")
+
+  test(function() {
+    var node = create()
+    node.data = "This is the character data, append more 資料，測試資料";
+
+    node.insertData(26, " test");
+    assert_equals(node.data, "This is the character data test, append more 資料，測試資料");
+    node.insertData(48, "更多");
+    assert_equals(node.data, "This is the character data test, append more 資料，更多測試資料");
+  }, type + ".insertData() with non-ascii data")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "🌠 test 🌠 TEST"
+
+    node.insertData(5, "--");  // Counting UTF-16 code units
+    assert_equals(node.data, "🌠 te--st 🌠 TEST");
+  }, type + ".insertData() with non-BMP data")
+}
+
+testNode(function() { return document.createTextNode("test") }, "Text")
+testNode(function() { return document.createComment("test") }, "Comment")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-remove.html b/testing/web-platform/tests/dom/nodes/CharacterData-remove.html
new file mode 100644
index 000000000..aef9d56bf
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-remove.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>CharacterData.remove</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-childnode-remove">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="ChildNode-remove.js"></script>
+<div id=log></div>
+<script>
+var text, text_parent,
+    comment, comment_parent,
+    pi, pi_parent;
+setup(function() {
+  text = document.createTextNode("text");
+  text_parent = document.createElement("div");
+  comment = document.createComment("comment");
+  comment_parent = document.createElement("div");
+  pi = document.createProcessingInstruction("foo", "bar");
+  pi_parent = document.createElement("div");
+});
+testRemove(text, text_parent, "text");
+testRemove(comment, comment_parent, "comment");
+testRemove(pi, pi_parent, "PI");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-replaceData.html b/testing/web-platform/tests/dom/nodes/CharacterData-replaceData.html
new file mode 100644
index 000000000..624ee5f23
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-replaceData.html
@@ -0,0 +1,163 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>CharacterData.replaceData</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-replacedata">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function testNode(create, type) {
+  // Step 2.
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_throws("IndexSizeError", function() { node.replaceData(5, 1, "x") })
+    assert_throws("IndexSizeError", function() { node.replaceData(5, 0, "") })
+    assert_throws("IndexSizeError", function() { node.replaceData(-1, 1, "x") })
+    assert_throws("IndexSizeError", function() { node.replaceData(-1, 0, "") })
+    assert_equals(node.data, "test")
+  }, type + ".replaceData() with invalid offset")
+
+  // Step 3.
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(2, 10, "yo")
+    assert_equals(node.data, "teyo")
+  }, type + ".replaceData() with clamped count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(2, -1, "yo")
+    assert_equals(node.data, "teyo")
+  }, type + ".replaceData() with negative clamped count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(0, 0, "yo")
+    assert_equals(node.data, "yotest")
+  }, type + ".replaceData() before the start")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(0, 2, "y")
+    assert_equals(node.data, "yst")
+  }, type + ".replaceData() at the start (shorter)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(0, 2, "yo")
+    assert_equals(node.data, "yost")
+  }, type + ".replaceData() at the start (equal length)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(0, 2, "yoa")
+    assert_equals(node.data, "yoast")
+  }, type + ".replaceData() at the start (longer)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(1, 2, "o")
+    assert_equals(node.data, "tot")
+  }, type + ".replaceData() in the middle (shorter)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(1, 2, "yo")
+    assert_equals(node.data, "tyot")
+  }, type + ".replaceData() in the middle (equal length)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(1, 1, "waddup")
+    assert_equals(node.data, "twaddupst")
+    node.replaceData(1, 1, "yup")
+    assert_equals(node.data, "tyupaddupst")
+  }, type + ".replaceData() in the middle (longer)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(1, 20, "yo")
+    assert_equals(node.data, "tyo")
+  }, type + ".replaceData() at the end (shorter)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(2, 20, "yo")
+    assert_equals(node.data, "teyo")
+  }, type + ".replaceData() at the end (same length)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(4, 20, "yo")
+    assert_equals(node.data, "testyo")
+  }, type + ".replaceData() at the end (longer)")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(0, 4, "quux")
+    assert_equals(node.data, "quux")
+  }, type + ".replaceData() the whole string")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.replaceData(0, 4, "")
+    assert_equals(node.data, "")
+  }, type + ".replaceData() with the empty string")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "This is the character data test, append 資料，更多資料";
+
+    node.replaceData(33, 6, "other");
+    assert_equals(node.data, "This is the character data test, other 資料，更多資料");
+    node.replaceData(44, 2, "文字");
+    assert_equals(node.data, "This is the character data test, other 資料，更多文字");
+  }, type + ".replaceData() with non-ASCII data")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "🌠 test 🌠 TEST"
+
+    node.replaceData(5, 8, "--");  // Counting UTF-16 code units
+    assert_equals(node.data, "🌠 te--ST");
+  }, type + ".replaceData() with non-BMP data")
+}
+
+testNode(function() { return document.createTextNode("test") }, "Text")
+testNode(function() { return document.createComment("test") }, "Comment")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-substringData.html b/testing/web-platform/tests/dom/nodes/CharacterData-substringData.html
new file mode 100644
index 000000000..f20b4b202
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-substringData.html
@@ -0,0 +1,137 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>CharacterData.substringData</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-substringdata">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function testNode(create, type) {
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_throws(new TypeError(), function() { node.substringData() })
+    assert_throws(new TypeError(), function() { node.substringData(0) })
+  }, type + ".substringData() with too few arguments")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData(0, 1, "test"), "t")
+  }, type + ".substringData() with too many arguments")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_throws("IndexSizeError", function() { node.substringData(5, 0) })
+    assert_throws("IndexSizeError", function() { node.substringData(6, 0) })
+    assert_throws("IndexSizeError", function() { node.substringData(-1, 0) })
+  }, type + ".substringData() with invalid offset")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData(0, 1), "t")
+    assert_equals(node.substringData(1, 1), "e")
+    assert_equals(node.substringData(2, 1), "s")
+    assert_equals(node.substringData(3, 1), "t")
+    assert_equals(node.substringData(4, 1), "")
+  }, type + ".substringData() with in-bounds offset")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData(0, 0), "")
+    assert_equals(node.substringData(1, 0), "")
+    assert_equals(node.substringData(2, 0), "")
+    assert_equals(node.substringData(3, 0), "")
+    assert_equals(node.substringData(4, 0), "")
+  }, type + ".substringData() with zero count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData(0x100000000 + 0, 1), "t")
+    assert_equals(node.substringData(0x100000000 + 1, 1), "e")
+    assert_equals(node.substringData(0x100000000 + 2, 1), "s")
+    assert_equals(node.substringData(0x100000000 + 3, 1), "t")
+    assert_equals(node.substringData(0x100000000 + 4, 1), "")
+  }, type + ".substringData() with very large offset")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData(-0x100000000 + 2, 1), "s")
+  }, type + ".substringData() with negative offset")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData("test", 3), "tes")
+  }, type + ".substringData() with string offset")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData(0, 1), "t")
+    assert_equals(node.substringData(0, 2), "te")
+    assert_equals(node.substringData(0, 3), "tes")
+    assert_equals(node.substringData(0, 4), "test")
+  }, type + ".substringData() with in-bounds count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData(0, 5), "test")
+    assert_equals(node.substringData(2, 20), "st")
+  }, type + ".substringData() with large count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData(2, 0x100000000 + 1), "s")
+  }, type + ".substringData() with very large count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_equals(node.substringData(0, -1), "test")
+    assert_equals(node.substringData(0, -0x100000000 + 2), "te")
+  }, type + ".substringData() with negative count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "This is the character data test, other 資料，更多文字"
+
+    assert_equals(node.substringData(12, 4), "char")
+    assert_equals(node.substringData(39, 2), "資料")
+  }, type + ".substringData() with non-ASCII data")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "🌠 test 🌠 TEST"
+
+    assert_equals(node.substringData(5, 8), "st 🌠 TE")  // Counting UTF-16 code units
+  }, type + ".substringData() with non-BMP data")
+}
+
+testNode(function() { return document.createTextNode("test") }, "Text")
+testNode(function() { return document.createComment("test") }, "Comment")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-surrogates.html b/testing/web-platform/tests/dom/nodes/CharacterData-surrogates.html
new file mode 100644
index 000000000..ff1014c5f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-surrogates.html
@@ -0,0 +1,74 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Splitting and joining surrogate pairs in CharacterData methods</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-substringdata">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-replacedata">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-insertdata">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-deletedata">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function testNode(create, type) {
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "🌠 test 🌠 TEST"
+
+    assert_equals(node.substringData(1, 8), "\uDF20 test \uD83C")
+  }, type + ".substringData() splitting surrogate pairs")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "🌠 test 🌠 TEST"
+
+    node.replaceData(1, 4, "--");
+    assert_equals(node.data, "\uD83C--st 🌠 TEST");
+
+    node.replaceData(1, 2, "\uDF1F ");
+    assert_equals(node.data, "🌟 st 🌠 TEST");
+
+    node.replaceData(5, 2, "---");
+    assert_equals(node.data, "🌟 st---\uDF20 TEST");
+
+    node.replaceData(6, 2, " \uD83D");
+    assert_equals(node.data, "🌟 st- 🜠 TEST");
+  }, type + ".replaceData() splitting and creating surrogate pairs")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "🌠 test 🌠 TEST"
+
+    node.deleteData(1, 4);
+    assert_equals(node.data, "\uD83Cst 🌠 TEST");
+
+    node.deleteData(1, 4);
+    assert_equals(node.data, "🌠 TEST");
+  }, type + ".deleteData() splitting and creating surrogate pairs")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.data = "🌠 test 🌠 TEST"
+
+    node.insertData(1, "--");
+    assert_equals(node.data, "\uD83C--\uDF20 test 🌠 TEST");
+
+    node.insertData(1, "\uDF1F ");
+    assert_equals(node.data, "🌟 --\uDF20 test 🌠 TEST");
+
+    node.insertData(5, " \uD83D");
+    assert_equals(node.data, "🌟 -- 🜠 test 🌠 TEST");
+  }, type + ".insertData() splitting and creating surrogate pairs")
+}
+
+testNode(function() { return document.createTextNode("test") }, "Text")
+testNode(function() { return document.createComment("test") }, "Comment")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/ChildNode-after.html b/testing/web-platform/tests/dom/nodes/ChildNode-after.html
new file mode 100644
index 000000000..b5bf7ab5c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ChildNode-after.html
@@ -0,0 +1,166 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>ChildNode.after</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-childnode-after">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+
+function test_after(child, nodeName, innerHTML) {
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.after();
+        assert_equals(parent.innerHTML, innerHTML);
+    }, nodeName + '.after() without any argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.after(null);
+        var expected = innerHTML + 'null';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with null as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.after(undefined);
+        var expected = innerHTML + 'undefined';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with undefined as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.after('');
+        assert_equals(parent.lastChild.data, '');
+    }, nodeName + '.after() with the empty string as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.after('text');
+        var expected = innerHTML + 'text';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with only text as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        parent.appendChild(child);
+        child.after(x);
+        var expected = innerHTML + '<x></x>';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with only one element as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        parent.appendChild(child);
+        child.after(x, 'text');
+        var expected = innerHTML + '<x></x>text';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with one element and text as arguments.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.after('text', child);
+        var expected = 'text' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with context object itself as the argument.');
+
+    test(function() {
+        var parent = document.createElement('div')
+        var x = document.createElement('x');
+        parent.appendChild(x);
+        parent.appendChild(child);
+        child.after(child, x);
+        var expected = innerHTML + '<x></x>';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with context object itself and node as the arguments, switching positions.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        var z = document.createElement('z');
+        parent.appendChild(y);
+        parent.appendChild(child);
+        parent.appendChild(x);
+        child.after(x, y, z);
+        var expected = innerHTML + '<x></x><y></y><z></z>';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with all siblings of child as arguments.');
+
+    test(function() {
+        var parent = document.createElement('div')
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        var z = document.createElement('z');
+        parent.appendChild(child);
+        parent.appendChild(x);
+        parent.appendChild(y);
+        parent.appendChild(z);
+        child.after(x, y);
+        var expected = innerHTML + '<x></x><y></y><z></z>';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with some siblings of child as arguments; no changes in tree; viable sibling is first child.');
+
+    test(function() {
+        var parent = document.createElement('div')
+        var v = document.createElement('v');
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        var z = document.createElement('z');
+        parent.appendChild(child);
+        parent.appendChild(v);
+        parent.appendChild(x);
+        parent.appendChild(y);
+        parent.appendChild(z);
+        child.after(v, x);
+        var expected = innerHTML + '<v></v><x></x><y></y><z></z>';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with some siblings of child as arguments; no changes in tree.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        parent.appendChild(child);
+        parent.appendChild(x);
+        parent.appendChild(y);
+        child.after(y, x);
+        var expected = innerHTML + '<y></y><x></x>';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() when pre-insert behaves like append.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        parent.appendChild(child);
+        parent.appendChild(x);
+        parent.appendChild(document.createTextNode('1'));
+        parent.appendChild(y);
+        child.after(x, '2');
+        var expected = innerHTML + '<x></x>21<y></y>';
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.after() with one sibling of child and text as arguments.');
+
+    test(function() {
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        x.after(y);
+        assert_equals(x.nextSibling, null);
+    }, nodeName + '.after() on a child without any parent.');
+}
+
+test_after(document.createComment('test'), 'Comment', '<!--test-->');
+test_after(document.createElement('test'), 'Element', '<test></test>');
+test_after(document.createTextNode('test'), 'Text', 'test');
+
+</script>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/ChildNode-before.html b/testing/web-platform/tests/dom/nodes/ChildNode-before.html
new file mode 100644
index 000000000..865942446
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ChildNode-before.html
@@ -0,0 +1,166 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>ChildNode.before</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-childnode-before">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+
+function test_before(child, nodeName, innerHTML) {
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.before();
+        assert_equals(parent.innerHTML, innerHTML);
+    }, nodeName + '.before() without any argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.before(null);
+        var expected = 'null' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with null as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.before(undefined);
+        var expected = 'undefined' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with undefined as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.before('');
+        assert_equals(parent.firstChild.data, '');
+    }, nodeName + '.before() with the empty string as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.before('text');
+        var expected = 'text' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with only text as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        parent.appendChild(child);
+        child.before(x);
+        var expected = '<x></x>' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with only one element as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        parent.appendChild(child);
+        child.before(x, 'text');
+        var expected = '<x></x>text' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with one element and text as arguments.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.before('text', child);
+        var expected = 'text' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with context object itself as the argument.');
+
+    test(function() {
+        var parent = document.createElement('div')
+        var x = document.createElement('x');
+        parent.appendChild(child);
+        parent.appendChild(x);
+        child.before(x, child);
+        var expected = '<x></x>' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with context object itself and node as the arguments, switching positions.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        var z = document.createElement('z');
+        parent.appendChild(y);
+        parent.appendChild(child);
+        parent.appendChild(x);
+        child.before(x, y, z);
+        var expected = '<x></x><y></y><z></z>' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with all siblings of child as arguments.');
+
+    test(function() {
+        var parent = document.createElement('div')
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        var z = document.createElement('z');
+        parent.appendChild(x);
+        parent.appendChild(y);
+        parent.appendChild(z);
+        parent.appendChild(child);
+        child.before(y, z);
+        var expected = '<x></x><y></y><z></z>' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with some siblings of child as arguments; no changes in tree; viable sibling is first child.');
+
+    test(function() {
+        var parent = document.createElement('div')
+        var v = document.createElement('v');
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        var z = document.createElement('z');
+        parent.appendChild(v);
+        parent.appendChild(x);
+        parent.appendChild(y);
+        parent.appendChild(z);
+        parent.appendChild(child);
+        child.before(y, z);
+        var expected = '<v></v><x></x><y></y><z></z>' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with some siblings of child as arguments; no changes in tree.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        parent.appendChild(x);
+        parent.appendChild(y);
+        parent.appendChild(child);
+        child.before(y, x);
+        var expected = '<y></y><x></x>' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() when pre-insert behaves like prepend.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        parent.appendChild(x);
+        parent.appendChild(document.createTextNode('1'));
+        var y = document.createElement('y');
+        parent.appendChild(y);
+        parent.appendChild(child);
+        child.before(x, '2');
+        var expected = '1<y></y><x></x>2' + innerHTML;
+        assert_equals(parent.innerHTML, expected);
+    }, nodeName + '.before() with one sibling of child and text as arguments.');
+
+    test(function() {
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        x.before(y);
+        assert_equals(x.previousSibling, null);
+    }, nodeName + '.before() on a child without any parent.');
+}
+
+test_before(document.createComment('test'), 'Comment', '<!--test-->');
+test_before(document.createElement('test'), 'Element', '<test></test>');
+test_before(document.createTextNode('test'), 'Text', 'test');
+
+</script>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/ChildNode-remove.js b/testing/web-platform/tests/dom/nodes/ChildNode-remove.js
new file mode 100644
index 000000000..c36ba0d11
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ChildNode-remove.js
@@ -0,0 +1,30 @@
+function testRemove(node, parent, type) {
+  test(function() {
+    assert_true("remove" in node);
+    assert_equals(typeof node.remove, "function");
+    assert_equals(node.remove.length, 0);
+  }, type + " should support remove()");
+  test(function() {
+    assert_equals(node.parentNode, null, "Node should not have a parent");
+    assert_equals(node.remove(), undefined);
+    assert_equals(node.parentNode, null, "Removed new node should not have a parent");
+  }, "remove() should work if " + type + " doesn't have a parent");
+  test(function() {
+    assert_equals(node.parentNode, null, "Node should not have a parent");
+    parent.appendChild(node);
+    assert_equals(node.parentNode, parent, "Appended node should have a parent");
+    assert_equals(node.remove(), undefined);
+    assert_equals(node.parentNode, null, "Removed node should not have a parent");
+    assert_array_equals(parent.childNodes, [], "Parent should not have children");
+  }, "remove() should work if " + type + " does have a parent");
+  test(function() {
+    assert_equals(node.parentNode, null, "Node should not have a parent");
+    var before = parent.appendChild(document.createComment("before"));
+    parent.appendChild(node);
+    var after = parent.appendChild(document.createComment("after"));
+    assert_equals(node.parentNode, parent, "Appended node should have a parent");
+    assert_equals(node.remove(), undefined);
+    assert_equals(node.parentNode, null, "Removed node should not have a parent");
+    assert_array_equals(parent.childNodes, [before, after], "Parent should have two children left");
+  }, "remove() should work if " + type + " does have a parent and siblings");
+}
diff --git a/testing/web-platform/tests/dom/nodes/ChildNode-replaceWith.html b/testing/web-platform/tests/dom/nodes/ChildNode-replaceWith.html
new file mode 100644
index 000000000..aab8b17f2
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ChildNode-replaceWith.html
@@ -0,0 +1,110 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>ChildNode.replaceWith</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-childnode-replaceWith">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+
+function test_replaceWith(child, nodeName, innerHTML) {
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.replaceWith();
+        assert_equals(parent.innerHTML, '');
+    }, nodeName + '.replaceWith() without any argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.replaceWith(null);
+        assert_equals(parent.innerHTML, 'null');
+    }, nodeName + '.replaceWith() with null as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.replaceWith(undefined);
+        assert_equals(parent.innerHTML, 'undefined');
+    }, nodeName + '.replaceWith() with undefined as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.replaceWith('');
+        assert_equals(parent.innerHTML, '');
+    }, nodeName + '.replaceWith() with empty string as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        parent.appendChild(child);
+        child.replaceWith('text');
+        assert_equals(parent.innerHTML, 'text');
+    }, nodeName + '.replaceWith() with only text as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        parent.appendChild(child);
+        child.replaceWith(x);
+        assert_equals(parent.innerHTML, '<x></x>');
+    }, nodeName + '.replaceWith() with only one element as an argument.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        var z = document.createElement('z');
+        parent.appendChild(y);
+        parent.appendChild(child);
+        parent.appendChild(x);
+        child.replaceWith(x, y, z);
+        assert_equals(parent.innerHTML, '<x></x><y></y><z></z>');
+    }, nodeName + '.replaceWith() with sibling of child as arguments.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        parent.appendChild(child);
+        parent.appendChild(x);
+        parent.appendChild(document.createTextNode('1'));
+        child.replaceWith(x, '2');
+        assert_equals(parent.innerHTML, '<x></x>21');
+    }, nodeName + '.replaceWith() with one sibling of child and text as arguments.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        parent.appendChild(child);
+        parent.appendChild(x);
+        parent.appendChild(document.createTextNode('text'));
+        child.replaceWith(x, child);
+        assert_equals(parent.innerHTML, '<x></x>' + innerHTML + 'text');
+    }, nodeName + '.replaceWith() with one sibling of child and child itself as arguments.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        parent.appendChild(child);
+        child.replaceWith(x, 'text');
+        assert_equals(parent.innerHTML, '<x></x>text');
+    }, nodeName + '.replaceWith() with one element and text as arguments.');
+
+    test(function() {
+        var parent = document.createElement('div');
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        parent.appendChild(x);
+        parent.appendChild(y);
+        child.replaceWith(x, y);
+        assert_equals(parent.innerHTML, '<x></x><y></y>');
+    }, nodeName + '.replaceWith() on a parentless child with two elements as arguments.');
+}
+
+test_replaceWith(document.createComment('test'), 'Comment', '<!--test-->');
+test_replaceWith(document.createElement('test'), 'Element', '<test></test>');
+test_replaceWith(document.createTextNode('test'), 'Text', 'test');
+
+</script>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Comment-Text-constructor.js b/testing/web-platform/tests/dom/nodes/Comment-Text-constructor.js
new file mode 100644
index 000000000..360b9760e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Comment-Text-constructor.js
@@ -0,0 +1,77 @@
+function test_constructor(ctor) {
+  test(function() {
+    var object = new window[ctor]();
+    assert_equals(Object.getPrototypeOf(object),
+                  window[ctor].prototype, "Prototype chain: " + ctor);
+    assert_equals(Object.getPrototypeOf(Object.getPrototypeOf(object)),
+                  CharacterData.prototype, "Prototype chain: CharacterData");
+    assert_equals(Object.getPrototypeOf(Object.getPrototypeOf(Object.getPrototypeOf(object))),
+                  Node.prototype, "Prototype chain: Node");
+  }, "new " + ctor + "(): prototype chain");
+
+  test(function() {
+    var object = new window[ctor]();
+    assert_true(object instanceof Node, "Should be a Node");
+    assert_true(object instanceof CharacterData, "Should be a CharacterData");
+    assert_true(object instanceof window[ctor], "Should be a " + ctor);
+  }, "new " + ctor + "(): instanceof");
+
+  test(function() {
+    var object = new window[ctor]();
+    assert_equals(object.data, "");
+    assert_equals(object.nodeValue, "");
+    assert_equals(object.ownerDocument, document);
+  }, "new " + ctor + "(): no arguments");
+
+  var arguments = [
+    [undefined, ""],
+    [null, "null"],
+    [42, "42"],
+    ["", ""],
+    ["-", "-"],
+    ["--", "--"],
+    ["-->", "-->"],
+    ["<!--", "<!--"],
+    ["\u0000", "\u0000"],
+    ["\u0000test", "\u0000test"],
+    ["&amp;", "&amp;"],
+  ];
+
+  arguments.forEach(function(a) {
+    var argument = a[0], expected = a[1];
+    test(function() {
+      var object = new window[ctor](argument);
+      assert_equals(object.data, expected);
+      assert_equals(object.nodeValue, expected);
+      assert_equals(object.ownerDocument, document);
+    }, "new " + ctor + "(): " + format_value(argument));
+  });
+
+  test(function() {
+    var called = [];
+    var object = new window[ctor]({
+      toString: function() {
+        called.push("first");
+        return "text";
+      }
+    }, {
+      toString: function() {
+        called.push("second");
+        assert_unreached("Should not look at the second argument.");
+      }
+    });
+    assert_equals(object.data, "text");
+    assert_equals(object.nodeValue, "text");
+    assert_equals(object.ownerDocument, document);
+    assert_array_equals(called, ["first"]);
+  }, "new " + ctor + "(): two arguments")
+
+  async_test("new " + ctor + "() should get the correct ownerDocument across globals").step(function() {
+    var iframe = document.createElement("iframe");
+    iframe.onload = this.step_func_done(function() {
+      var object = new iframe.contentWindow[ctor]();
+      assert_equals(object.ownerDocument, iframe.contentDocument);
+    });
+    document.body.appendChild(iframe);
+  });
+}
diff --git a/testing/web-platform/tests/dom/nodes/Comment-constructor.html b/testing/web-platform/tests/dom/nodes/Comment-constructor.html
new file mode 100644
index 000000000..5091316bd
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Comment-constructor.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Comment constructor</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-comment">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Comment-Text-constructor.js"></script>
+<div id="log"></div>
+<script>
+test_constructor("Comment");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/DOMImplementation-createDocument.html b/testing/web-platform/tests/dom/nodes/DOMImplementation-createDocument.html
new file mode 100644
index 000000000..f4b635871
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/DOMImplementation-createDocument.html
@@ -0,0 +1,166 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>DOMImplementation.createDocument(namespace, qualifiedName, doctype)</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-domimplementation-createdocument">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createelementns">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodetype">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-documentelement">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-doctype">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-createElementNS.js"></script>
+<div id="log"></div>
+<script>
+var htmlNamespace = "http://www.w3.org/1999/xhtml"
+var svgNamespace = "http://www.w3.org/2000/svg"
+var mathMLNamespace = "http://www.w3.org/1998/Math/MathML"
+
+// Make DocumentTypes distinct
+function my_format_value(val) {
+  if (val instanceof DocumentType) {
+    return "DocumentType node <!DOCTYPE " + val.name
+      + (val.publicId ? " " + val.publicId : "")
+      + (val.systemId ? " " + val.systemId : "")
+      + ">";
+  }
+  return format_value(val);
+}
+
+test(function() {
+  var tests = createElementNS_tests.map(function(t) {
+    return [t[0], t[1], null, t[2]]
+  }).concat([
+    /* Arrays with four elements:
+     *   the namespace argument
+     *   the qualifiedName argument
+     *   the doctype argument
+     *   the expected exception, or null if none
+     */
+    [null, null, false, new TypeError()],
+    [null, null, null, null],
+    [null, "", null, null],
+    [undefined, null, undefined, null],
+    [undefined, undefined, undefined, null],
+    [undefined, "", undefined, null],
+    ["http://example.com/", null, null, null],
+    ["http://example.com/", "", null, null],
+    ["/", null, null, null],
+    ["/", "", null, null],
+    ["http://www.w3.org/XML/1998/namespace", null, null, null],
+    ["http://www.w3.org/XML/1998/namespace", "", null, null],
+    ["http://www.w3.org/2000/xmlns/", null, null, null],
+    ["http://www.w3.org/2000/xmlns/", "", null, null],
+    ["foo:", null, null, null],
+    ["foo:", "", null, null],
+    [null, null, document.implementation.createDocumentType("foo", "", ""), null],
+    [null, null, document.doctype, null], // This causes a horrible WebKit bug (now fixed in trunk).
+    [null, null, function() {
+        var foo = document.implementation.createDocumentType("bar", "", "");
+        document.implementation.createDocument(null, null, foo);
+        return foo;
+     }(), null], // DOCTYPE already associated with a document.
+    [null, null, function() {
+        var bar = document.implementation.createDocument(null, null, null);
+        return bar.implementation.createDocumentType("baz", "", "");
+     }(), null], // DOCTYPE created by a different implementation.
+    [null, null, function() {
+        var bar = document.implementation.createDocument(null, null, null);
+        var magic = bar.implementation.createDocumentType("quz", "", "");
+        bar.implementation.createDocument(null, null, magic);
+        return magic;
+     }(), null], // DOCTYPE created by a different implementation and already associated with a document.
+    [null, "foo", document.implementation.createDocumentType("foo", "", ""), null],
+    ["foo", null, document.implementation.createDocumentType("foo", "", ""), null],
+    ["foo", "bar", document.implementation.createDocumentType("foo", "", ""), null],
+    [htmlNamespace, "", null, null],
+    [svgNamespace, "", null, null],
+    [mathMLNamespace, "", null, null],
+    [null, "html", null, null],
+    [null, "svg", null, null],
+    [null, "math", null, null],
+    [null, "", document.implementation.createDocumentType("html",
+        "-//W3C//DTD XHTML 1.0 Transitional//EN",
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd")],
+    [null, "", document.implementation.createDocumentType("svg",
+        "-//W3C//DTD SVG 1.1//EN",
+        "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd")],
+    [null, "", document.implementation.createDocumentType("math",
+        "-//W3C//DTD MathML 2.0//EN",
+        "http://www.w3.org/Math/DTD/mathml2/mathml2.dtd")],
+  ])
+
+  tests.forEach(function(t, i) {
+    var namespace = t[0], qualifiedName = t[1], doctype = t[2], expected = t[3]
+    test(function() {
+      if (expected != null) {
+        assert_throws(expected, function() { document.implementation.createDocument(namespace, qualifiedName, doctype) })
+      } else {
+        var doc = document.implementation.createDocument(namespace, qualifiedName, doctype)
+        assert_equals(doc.nodeType, Node.DOCUMENT_NODE)
+        assert_equals(doc.nodeType, doc.DOCUMENT_NODE)
+        assert_equals(doc.nodeName, "#document")
+        assert_equals(doc.nodeValue, null)
+        assert_equals(Object.getPrototypeOf(doc), XMLDocument.prototype)
+        var omitRootElement = qualifiedName === null || String(qualifiedName) === ""
+        if (omitRootElement) {
+          assert_equals(doc.documentElement, null)
+        } else {
+          var element = doc.documentElement
+          assert_not_equals(element, null)
+          assert_equals(element.nodeType, Node.ELEMENT_NODE)
+          assert_equals(element.ownerDocument, doc)
+          var qualified = String(qualifiedName), names = []
+          if (qualified.indexOf(":") >= 0) {
+            names = qualified.split(":", 2)
+          } else {
+            names = [null, qualified]
+          }
+          assert_equals(element.prefix, names[0])
+          assert_equals(element.localName, names[1])
+          assert_equals(element.namespaceURI, namespace === undefined ? null : namespace)
+        }
+        if (!doctype) {
+          assert_equals(doc.doctype, null)
+        } else {
+          assert_equals(doc.doctype, doctype)
+          assert_equals(doc.doctype.ownerDocument, doc)
+        }
+        assert_equals(doc.childNodes.length, !omitRootElement + !!doctype)
+      }
+    }, "createDocument test: " + t.map(my_format_value))
+
+    if (expected === null) {
+      test(function() {
+        var doc = document.implementation.createDocument(namespace, qualifiedName, doctype)
+        assert_equals(doc.compatMode, "CSS1Compat")
+        assert_equals(doc.characterSet, "UTF-8")
+        assert_equals(doc.contentType, namespace == htmlNamespace ? "application/xhtml+xml"
+                                 : namespace == svgNamespace ?  "image/svg+xml"
+                                 : "application/xml")
+        assert_equals(doc.URL, "about:blank")
+        assert_equals(doc.documentURI, "about:blank")
+        assert_equals(doc.createElement("DIV").localName, "DIV");
+      }, "createDocument test " + i + ": metadata for " +
+      [namespace, qualifiedName, doctype].map(my_format_value))
+
+      test(function() {
+        var doc = document.implementation.createDocument(namespace, qualifiedName, doctype)
+        assert_equals(doc.characterSet, "UTF-8", "characterSet");
+        assert_equals(doc.charset, "UTF-8", "charset");
+        assert_equals(doc.inputEncoding, "UTF-8", "inputEncoding");
+      }, "createDocument test " + i + ": characterSet aliases for " +
+      [namespace, qualifiedName, doctype].map(my_format_value))
+    }
+  })
+})
+
+test(function() {
+  assert_throws(new TypeError(), function() {
+    document.implementation.createDocument()
+  }, "createDocument() should throw")
+
+  assert_throws(new TypeError(), function() {
+    document.implementation.createDocument('')
+  }, "createDocument('') should throw")
+}, "createDocument with missing arguments");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/DOMImplementation-createDocumentType.html b/testing/web-platform/tests/dom/nodes/DOMImplementation-createDocumentType.html
new file mode 100644
index 000000000..ac79ddd73
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/DOMImplementation-createDocumentType.html
@@ -0,0 +1,123 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>DOMImplementation.createDocumentType(qualifiedName, publicId, systemId)</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-documenttype-name">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-documenttype-publicid">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-documenttype-systemid">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-ownerdocument">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var tests = [
+    ["", "", "", "INVALID_CHARACTER_ERR"],
+    ["test:root", "1234", "", null],
+    ["test:root", "1234", "test", null],
+    ["test:root", "test", "", null],
+    ["test:root", "test", "test", null],
+    ["_:_", "", "", null],
+    ["_:h0", "", "", null],
+    ["_:test", "", "", null],
+    ["_:_.", "", "", null],
+    ["_:a-", "", "", null],
+    ["l_:_", "", "", null],
+    ["ns:_0", "", "", null],
+    ["ns:a0", "", "", null],
+    ["ns0:test", "", "", null],
+    ["ns:EEE.", "", "", null],
+    ["ns:_-", "", "", null],
+    ["a.b:c", "", "", null],
+    ["a-b:c.j", "", "", null],
+    ["a-b:c", "", "", null],
+    ["foo", "", "", null],
+    ["1foo", "", "", "INVALID_CHARACTER_ERR"],
+    ["foo1", "", "", null],
+    ["f1oo", "", "", null],
+    ["@foo", "", "", "INVALID_CHARACTER_ERR"],
+    ["foo@", "", "", "INVALID_CHARACTER_ERR"],
+    ["f@oo", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:{", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:}", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:~", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:'", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:!", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:@", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:#", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:$", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:%", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:^", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:&", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:*", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:(", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:)", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:+", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:=", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:[", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:]", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:\\", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:/", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:;", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:`", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:<", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:>", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:,", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:a ", "", "", "INVALID_CHARACTER_ERR"],
+    ["edi:\"", "", "", "INVALID_CHARACTER_ERR"],
+    ["{", "", "", "INVALID_CHARACTER_ERR"],
+    ["}", "", "", "INVALID_CHARACTER_ERR"],
+    ["'", "", "", "INVALID_CHARACTER_ERR"],
+    ["~", "", "", "INVALID_CHARACTER_ERR"],
+    ["`", "", "", "INVALID_CHARACTER_ERR"],
+    ["@", "", "", "INVALID_CHARACTER_ERR"],
+    ["#", "", "", "INVALID_CHARACTER_ERR"],
+    ["$", "", "", "INVALID_CHARACTER_ERR"],
+    ["%", "", "", "INVALID_CHARACTER_ERR"],
+    ["^", "", "", "INVALID_CHARACTER_ERR"],
+    ["&", "", "", "INVALID_CHARACTER_ERR"],
+    ["*", "", "", "INVALID_CHARACTER_ERR"],
+    ["(", "", "", "INVALID_CHARACTER_ERR"],
+    [")", "", "", "INVALID_CHARACTER_ERR"],
+    ["f:oo", "", "", null],
+    [":foo", "", "", "NAMESPACE_ERR"],
+    ["foo:", "", "", "NAMESPACE_ERR"],
+    ["prefix::local", "", "", "NAMESPACE_ERR"],
+    ["foo", "foo", "", null],
+    ["foo", "", "foo", null],
+    ["foo", "f'oo", "", null],
+    ["foo", "", "f'oo", null],
+    ["foo", 'f"oo', "", null],
+    ["foo", "", 'f"oo', null],
+    ["foo", "f'o\"o", "", null],
+    ["foo", "", "f'o\"o", null],
+    ["foo", "foo>", "", null],
+    ["foo", "", "foo>", null]
+  ]
+
+  var doc = document.implementation.createHTMLDocument("title");
+  var doTest = function(aDocument, aQualifiedName, aPublicId, aSystemId) {
+    var doctype = aDocument.implementation.createDocumentType(aQualifiedName, aPublicId, aSystemId);
+    assert_equals(doctype.name, aQualifiedName, "name")
+    assert_equals(doctype.nodeName, aQualifiedName, "nodeName")
+    assert_equals(doctype.publicId, aPublicId, "publicId")
+    assert_equals(doctype.systemId, aSystemId, "systemId")
+    assert_equals(doctype.ownerDocument, aDocument, "ownerDocument")
+    assert_equals(doctype.nodeValue, null, "nodeValue")
+  }
+  tests.forEach(function(t) {
+    var qualifiedName = t[0], publicId = t[1], systemId = t[2], expected = t[3]
+    test(function() {
+      if (expected) {
+        assert_throws(expected, function() {
+          document.implementation.createDocumentType(qualifiedName, publicId, systemId)
+        })
+      } else {
+        doTest(document, qualifiedName, publicId, systemId);
+        doTest(doc, qualifiedName, publicId, systemId);
+      }
+    }, "createDocumentType(" + format_value(qualifiedName) + ", " + format_value(publicId) + ", " + format_value(systemId) + ") should " +
+       (expected ? "throw " + expected : "work"));
+  });
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/DOMImplementation-createHTMLDocument.html b/testing/web-platform/tests/dom/nodes/DOMImplementation-createHTMLDocument.html
new file mode 100644
index 000000000..57f475c9c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/DOMImplementation-createHTMLDocument.html
@@ -0,0 +1,90 @@
+<!DOCTYPE html>
+<meta charset=windows-1252>
+<!-- Using windows-1252 to ensure that DOMImplementation.createHTMLDocument()
+     doesn't inherit utf-8 from the parent document. -->
+<title>DOMImplementation.createHTMLDocument</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-domimplementation-createhtmldocument">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-documenttype-name">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-documenttype-publicid">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-documenttype-systemid">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-documentelement">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="DOMImplementation-createHTMLDocument.js"></script>
+<div id="log"></div>
+<script>
+createHTMLDocuments(function(doc, expectedtitle, normalizedtitle) {
+  assert_true(doc instanceof Document, "Should be a Document")
+  assert_true(doc instanceof Node, "Should be a Node")
+  assert_equals(doc.childNodes.length, 2,
+                "Document should have two child nodes")
+
+  var doctype = doc.doctype
+  assert_true(doctype instanceof DocumentType,
+              "Doctype should be a DocumentType")
+  assert_true(doctype instanceof Node, "Doctype should be a Node")
+  assert_equals(doctype.name, "html")
+  assert_equals(doctype.publicId, "")
+  assert_equals(doctype.systemId, "")
+
+  var documentElement = doc.documentElement
+  assert_true(documentElement instanceof HTMLHtmlElement,
+              "Document element should be a HTMLHtmlElement")
+  assert_equals(documentElement.childNodes.length, 2,
+                "Document element should have two child nodes")
+  assert_equals(documentElement.localName, "html")
+  assert_equals(documentElement.tagName, "HTML")
+
+  var head = documentElement.firstChild
+  assert_true(head instanceof HTMLHeadElement,
+              "Head should be a HTMLHeadElement")
+  assert_equals(head.localName, "head")
+  assert_equals(head.tagName, "HEAD")
+
+  if (expectedtitle !== undefined) {
+    assert_equals(head.childNodes.length, 1)
+
+    var title = head.firstChild
+    assert_true(title instanceof HTMLTitleElement,
+                "Title should be a HTMLTitleElement")
+    assert_equals(title.localName, "title")
+    assert_equals(title.tagName, "TITLE")
+    assert_equals(title.childNodes.length, 1)
+    assert_equals(title.firstChild.data, expectedtitle)
+  } else {
+    assert_equals(head.childNodes.length, 0)
+  }
+
+  var body = documentElement.lastChild
+  assert_true(body instanceof HTMLBodyElement,
+              "Body should be a HTMLBodyElement")
+  assert_equals(body.localName, "body")
+  assert_equals(body.tagName, "BODY")
+  assert_equals(body.childNodes.length, 0)
+})
+
+test(function() {
+  var doc = document.implementation.createHTMLDocument("test");
+  assert_equals(doc.URL, "about:blank");
+  assert_equals(doc.documentURI, "about:blank");
+  assert_equals(doc.compatMode, "CSS1Compat");
+  assert_equals(doc.characterSet, "UTF-8");
+  assert_equals(doc.contentType, "text/html");
+  assert_equals(doc.createElement("DIV").localName, "div");
+}, "createHTMLDocument(): metadata")
+
+test(function() {
+  var doc = document.implementation.createHTMLDocument("test");
+  assert_equals(doc.characterSet, "UTF-8", "characterSet");
+  assert_equals(doc.charset, "UTF-8", "charset");
+  assert_equals(doc.inputEncoding, "UTF-8", "inputEncoding");
+}, "createHTMLDocument(): characterSet aliases")
+
+test(function() {
+  var doc = document.implementation.createHTMLDocument("test");
+  var a = doc.createElement("a");
+  // In UTF-8: 0xC3 0xA4
+  a.href = "http://example.org/?\u00E4";
+  assert_equals(a.href, "http://example.org/?%C3%A4");
+}, "createHTMLDocument(): URL parsing")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/DOMImplementation-createHTMLDocument.js b/testing/web-platform/tests/dom/nodes/DOMImplementation-createHTMLDocument.js
new file mode 100644
index 000000000..3e7e9aa9b
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/DOMImplementation-createHTMLDocument.js
@@ -0,0 +1,25 @@
+function createHTMLDocuments(checkDoc) {
+  var tests = [
+    ["", "", ""],
+    [null, "null", "null"],
+    [undefined, undefined, ""],
+    ["foo  bar baz", "foo  bar baz", "foo bar baz"],
+    ["foo\t\tbar baz", "foo\t\tbar baz", "foo bar baz"],
+    ["foo\n\nbar baz", "foo\n\nbar baz", "foo bar baz"],
+    ["foo\f\fbar baz", "foo\f\fbar baz", "foo bar baz"],
+    ["foo\r\rbar baz", "foo\r\rbar baz", "foo bar baz"],
+  ]
+
+  tests.forEach(function(t, i) {
+    var title = t[0], expectedtitle = t[1], normalizedtitle = t[2]
+    test(function() {
+      var doc = document.implementation.createHTMLDocument(title);
+      checkDoc(doc, expectedtitle, normalizedtitle)
+    }, "createHTMLDocument test " + i + ": " + t.map(function(el) { return format_value(el) }))
+  })
+
+  test(function() {
+    var doc = document.implementation.createHTMLDocument();
+    checkDoc(doc, undefined, "")
+  }, "Missing title argument");
+}
diff --git a/testing/web-platform/tests/dom/nodes/DOMImplementation-hasFeature.html b/testing/web-platform/tests/dom/nodes/DOMImplementation-hasFeature.html
new file mode 100644
index 000000000..637565a60
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/DOMImplementation-hasFeature.html
@@ -0,0 +1,155 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>DOMImplementation.hasFeature(feature, version)</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var tests = [
+        [],
+        ["Core"],
+        ["XML"],
+        ["org.w3c.svg"],
+        ["org.w3c.dom.svg"],
+        ["http://www.w3.org/TR/SVG11/feature#Script"],
+        ["Core", "1.0"],
+        ["Core", "2.0"],
+        ["Core", "3.0"],
+        ["Core", "100.0"],
+        ["XML", "1.0"],
+        ["XML", "2.0"],
+        ["XML", "3.0"],
+        ["XML", "100.0"],
+        ["Core", "1"],
+        ["Core", "2"],
+        ["Core", "3"],
+        ["Core", "100"],
+        ["XML", "1"],
+        ["XML", "2"],
+        ["XML", "3"],
+        ["XML", "100"],
+        ["Core", "1.1"],
+        ["Core", "2.1"],
+        ["Core", "3.1"],
+        ["Core", "100.1"],
+        ["XML", "1.1"],
+        ["XML", "2.1"],
+        ["XML", "3.1"],
+        ["XML", "100.1"],
+        ["Core", ""],
+        ["XML", ""],
+        ["core", ""],
+        ["xml", ""],
+        ["CoRe", ""],
+        ["XmL", ""],
+        [" Core", ""],
+        [" XML", ""],
+        ["Core ", ""],
+        ["XML ", ""],
+        ["Co re", ""],
+        ["XM L", ""],
+        ["aCore", ""],
+        ["aXML", ""],
+        ["Corea", ""],
+        ["XMLa", ""],
+        ["Coare", ""],
+        ["XMaL", ""],
+        ["Core", " "],
+        ["XML", " "],
+        ["Core", " 1.0"],
+        ["Core", " 2.0"],
+        ["Core", " 3.0"],
+        ["Core", " 100.0"],
+        ["XML", " 1.0"],
+        ["XML", " 2.0"],
+        ["XML", " 3.0"],
+        ["XML", " 100.0"],
+        ["Core", "1.0 "],
+        ["Core", "2.0 "],
+        ["Core", "3.0 "],
+        ["Core", "100.0 "],
+        ["XML", "1.0 "],
+        ["XML", "2.0 "],
+        ["XML", "3.0 "],
+        ["XML", "100.0 "],
+        ["Core", "1. 0"],
+        ["Core", "2. 0"],
+        ["Core", "3. 0"],
+        ["Core", "100. 0"],
+        ["XML", "1. 0"],
+        ["XML", "2. 0"],
+        ["XML", "3. 0"],
+        ["XML", "100. 0"],
+        ["Core", "a1.0"],
+        ["Core", "a2.0"],
+        ["Core", "a3.0"],
+        ["Core", "a100.0"],
+        ["XML", "a1.0"],
+        ["XML", "a2.0"],
+        ["XML", "a3.0"],
+        ["XML", "a100.0"],
+        ["Core", "1.0a"],
+        ["Core", "2.0a"],
+        ["Core", "3.0a"],
+        ["Core", "100.0a"],
+        ["XML", "1.0a"],
+        ["XML", "2.0a"],
+        ["XML", "3.0a"],
+        ["XML", "100.0a"],
+        ["Core", "1.a0"],
+        ["Core", "2.a0"],
+        ["Core", "3.a0"],
+        ["Core", "100.a0"],
+        ["XML", "1.a0"],
+        ["XML", "2.a0"],
+        ["XML", "3.a0"],
+        ["XML", "100.a0"],
+        ["Core", 1],
+        ["Core", 2],
+        ["Core", 3],
+        ["Core", 100],
+        ["XML", 1],
+        ["XML", 2],
+        ["XML", 3],
+        ["XML", 100],
+        ["Core", null],
+        ["XML", null],
+        ["core", null],
+        ["xml", null],
+        ["CoRe", null],
+        ["XmL", null],
+        [" Core", null],
+        [" XML", null],
+        ["Core ", null],
+        ["XML ", null],
+        ["Co re", null],
+        ["XM L", null],
+        ["aCore", null],
+        ["aXML", null],
+        ["Corea", null],
+        ["XMLa", null],
+        ["Coare", null],
+        ["XMaL", null],
+        ["Core", undefined],
+        ["XML", undefined],
+        ["This is filler text.", ""],
+        [null, ""],
+        [undefined, ""],
+        ["org.w3c.svg", ""],
+        ["org.w3c.svg", "1.0"],
+        ["org.w3c.svg", "1.1"],
+        ["org.w3c.dom.svg", ""],
+        ["org.w3c.dom.svg", "1.0"],
+        ["org.w3c.dom.svg", "1.1"],
+        ["http://www.w3.org/TR/SVG11/feature#Script", "7.5"],
+      ];
+  tests.forEach(function(data) {
+    test(function() {
+      assert_equals(document.implementation.hasFeature
+                    .apply(document.implementation, data), true)
+    }, "hasFeature(" + data.map(format_value).join(", ") + ")")
+  })
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-Element-getElementsByTagName.js b/testing/web-platform/tests/dom/nodes/Document-Element-getElementsByTagName.js
new file mode 100644
index 000000000..edbac646d
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-Element-getElementsByTagName.js
@@ -0,0 +1,193 @@
+function test_getElementsByTagName(context, element) {
+  // TODO: getElementsByTagName("*")
+  test(function() {
+    assert_false(context.getElementsByTagName("html") instanceof NodeList,
+                 "Should not return a NodeList")
+    assert_true(context.getElementsByTagName("html") instanceof HTMLCollection,
+                "Should return an HTMLCollection")
+  }, "Interfaces")
+
+  test(function() {
+    var firstCollection = context.getElementsByTagName("html"),
+        secondCollection = context.getElementsByTagName("html")
+    assert_true(firstCollection !== secondCollection ||
+                firstCollection === secondCollection)
+  }, "Caching is allowed")
+
+  test(function() {
+    var l = context.getElementsByTagName("nosuchtag")
+    l[5] = "foopy"
+    assert_equals(l[5], undefined)
+    assert_equals(l.item(5), null)
+  }, "Shouldn't be able to set unsigned properties on a HTMLCollection (non-strict mode)")
+
+  test(function() {
+    var l = context.getElementsByTagName("nosuchtag")
+    assert_throws(new TypeError(), function() {
+      "use strict";
+      l[5] = "foopy"
+    })
+    assert_equals(l[5], undefined)
+    assert_equals(l.item(5), null)
+  }, "Shouldn't be able to set unsigned properties on a HTMLCollection (strict mode)")
+
+  test(function() {
+    var l = context.getElementsByTagName("nosuchtag")
+    var fn = l.item;
+    assert_equals(fn, HTMLCollection.prototype.item);
+    l.item = "pass"
+    assert_equals(l.item, "pass")
+    assert_equals(HTMLCollection.prototype.item, fn);
+  }, "Should be able to set expando shadowing a proto prop (item)")
+
+  test(function() {
+    var l = context.getElementsByTagName("nosuchtag")
+    var fn = l.namedItem;
+    assert_equals(fn, HTMLCollection.prototype.namedItem);
+    l.namedItem = "pass"
+    assert_equals(l.namedItem, "pass")
+    assert_equals(HTMLCollection.prototype.namedItem, fn);
+  }, "Should be able to set expando shadowing a proto prop (namedItem)")
+
+  test(function() {
+    var t1 = element.appendChild(document.createElement("pre"));
+    t1.id = "x";
+    var t2 = element.appendChild(document.createElement("pre"));
+    t2.setAttribute("name", "y");
+    var t3 = element.appendChild(document.createElementNS("", "pre"));
+    t3.setAttribute("id", "z");
+    var t4 = element.appendChild(document.createElementNS("", "pre"));
+    t4.setAttribute("name", "w");
+    this.add_cleanup(function() {
+      element.removeChild(t1)
+      element.removeChild(t2)
+      element.removeChild(t3)
+      element.removeChild(t4)
+    });
+
+    var list = context.getElementsByTagName('pre');
+    var pre = list[0];
+    assert_equals(pre.id, "x");
+
+    var exposedNames = { 'x': 0, 'y': 1, 'z': 2 };
+    for (var exposedName in exposedNames) {
+      assert_equals(list[exposedName], list[exposedNames[exposedName]]);
+      assert_equals(list[exposedName], list.namedItem(exposedName));
+      assert_true(exposedName in list, "'" + exposedName + "' in list");
+      assert_true(list.hasOwnProperty(exposedName),
+                  "list.hasOwnProperty('" + exposedName + "')");
+    }
+
+    var unexposedNames = ["w"];
+    for (var unexposedName of unexposedNames) {
+      assert_false(unexposedName in list);
+      assert_false(list.hasOwnProperty(unexposedName));
+      assert_equals(list[unexposedName], undefined);
+      assert_equals(list.namedItem(unexposedName), null);
+    }
+
+    assert_array_equals(Object.getOwnPropertyNames(list).sort(),
+                        ["0", "1", "2", "3", "x", "y", "z"]);
+
+    var desc = Object.getOwnPropertyDescriptor(list, '0');
+    assert_equals(typeof desc, "object", "descriptor should be an object");
+    assert_true(desc.enumerable, "desc.enumerable");
+    assert_true(desc.configurable, "desc.configurable");
+
+    desc = Object.getOwnPropertyDescriptor(list, 'x');
+    assert_equals(typeof desc, "object", "descriptor should be an object");
+    assert_false(desc.enumerable, "desc.enumerable");
+    assert_true(desc.configurable, "desc.configurable");
+  }, "hasOwnProperty, getOwnPropertyDescriptor, getOwnPropertyNames")
+
+  test(function() {
+    assert_equals(document.createElementNS("http://www.w3.org/1999/xhtml", "i").localName, "i") // Sanity
+    var t = element.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "I"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_equals(t.localName, "I")
+    assert_equals(t.tagName, "I")
+    assert_equals(context.getElementsByTagName("I").length, 0)
+    assert_equals(context.getElementsByTagName("i").length, 0)
+  }, "HTML element with uppercase tagName never matches in HTML Documents")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "st"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("st"), [t])
+    assert_array_equals(context.getElementsByTagName("ST"), [])
+  }, "Element in non-HTML namespace, no prefix, lowercase name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "ST"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("ST"), [t])
+    assert_array_equals(context.getElementsByTagName("st"), [])
+  }, "Element in non-HTML namespace, no prefix, uppercase name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "te:st"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("st"), [])
+    assert_array_equals(context.getElementsByTagName("ST"), [])
+    assert_array_equals(context.getElementsByTagName("te:st"), [t])
+    assert_array_equals(context.getElementsByTagName("te:ST"), [])
+  }, "Element in non-HTML namespace, prefix, lowercase name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "te:ST"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("st"), [])
+    assert_array_equals(context.getElementsByTagName("ST"), [])
+    assert_array_equals(context.getElementsByTagName("te:st"), [])
+    assert_array_equals(context.getElementsByTagName("te:ST"), [t])
+  }, "Element in non-HTML namespace, prefix, uppercase name")
+
+  test(function() {
+    var t = element.appendChild(document.createElement("aÇ"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_equals(t.localName, "aÇ")
+    assert_array_equals(context.getElementsByTagName("AÇ"), [t], "All uppercase input")
+    assert_array_equals(context.getElementsByTagName("aÇ"), [t], "Ascii lowercase input")
+    assert_array_equals(context.getElementsByTagName("aç"), [], "All lowercase input")
+  }, "Element in HTML namespace, no prefix, non-ascii characters in name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "AÇ"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("AÇ"), [t])
+    assert_array_equals(context.getElementsByTagName("aÇ"), [])
+    assert_array_equals(context.getElementsByTagName("aç"), [])
+  }, "Element in non-HTML namespace, non-ascii characters in name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "test:aÇ"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("TEST:AÇ"), [t], "All uppercase input")
+    assert_array_equals(context.getElementsByTagName("test:aÇ"), [t], "Ascii lowercase input")
+    assert_array_equals(context.getElementsByTagName("test:aç"), [], "All lowercase input")
+  }, "Element in HTML namespace, prefix, non-ascii characters in name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "TEST:AÇ"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("TEST:AÇ"), [t], "All uppercase input")
+    assert_array_equals(context.getElementsByTagName("test:aÇ"), [], "Ascii lowercase input")
+    assert_array_equals(context.getElementsByTagName("test:aç"), [], "All lowercase input")
+  }, "Element in non-HTML namespace, prefix, non-ascii characters in name")
+
+  test(function() {
+    var actual = context.getElementsByTagName("*");
+    var expected = [];
+    var get_elements = function(node) {
+      for (var i = 0; i < node.childNodes.length; i++) {
+        var child = node.childNodes[i];
+        if (child.nodeType === child.ELEMENT_NODE) {
+          expected.push(child);
+          get_elements(child);
+        }
+      }
+    }
+    get_elements(context);
+    assert_array_equals(actual, expected);
+  }, "getElementsByTagName('*')")
+}
diff --git a/testing/web-platform/tests/dom/nodes/Document-Element-getElementsByTagNameNS.js b/testing/web-platform/tests/dom/nodes/Document-Element-getElementsByTagNameNS.js
new file mode 100644
index 000000000..a1bb31587
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-Element-getElementsByTagNameNS.js
@@ -0,0 +1,128 @@
+function test_getElementsByTagNameNS(context, element) {
+  test(function() {
+    assert_false(context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "html") instanceof NodeList, "NodeList")
+    assert_true(context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "html") instanceof HTMLCollection, "HTMLCollection")
+    var firstCollection = context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "html"),
+        secondCollection = context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "html")
+    assert_true(firstCollection !== secondCollection || firstCollection === secondCollection,
+                "Caching is allowed.")
+  })
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "body"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    var actual = context.getElementsByTagNameNS("*", "body");
+    var expected = [];
+    var get_elements = function(node) {
+      for (var i = 0; i < node.childNodes.length; i++) {
+        var child = node.childNodes[i];
+        if (child.nodeType === child.ELEMENT_NODE) {
+          if (child.localName == "body") {
+            expected.push(child);
+          }
+          get_elements(child);
+        }
+      }
+    }
+    get_elements(context);
+    assert_array_equals(actual, expected);
+  }, "getElementsByTagNameNS('*', 'body')")
+
+  test(function() {
+    assert_array_equals(context.getElementsByTagNameNS("", "*"), []);
+    var t = element.appendChild(document.createElementNS("", "body"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagNameNS("", "*"), [t]);
+  }, "Empty string namespace")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "body"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagNameNS("test", "body"), [t]);
+  }, "body element in test namespace, no prefix")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "test:body"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagNameNS("test", "body"), [t]);
+  }, "body element in test namespace, prefix")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "BODY"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagNameNS("test", "BODY"), [t]);
+    assert_array_equals(context.getElementsByTagNameNS("test", "body"), []);
+  }, "BODY element in test namespace, no prefix")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "abc"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "abc"), [t]);
+    assert_array_equals(context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "ABC"), []);
+    assert_array_equals(context.getElementsByTagNameNS("test", "ABC"), []);
+  }, "abc element in html namespace")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "ABC"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "abc"), []);
+    assert_array_equals(context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "ABC"), [t]);
+  }, "ABC element in html namespace")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "AÇ"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "AÇ"), [t]);
+    assert_array_equals(context.getElementsByTagNameNS("test", "aÇ"), []);
+    assert_array_equals(context.getElementsByTagNameNS("test", "aç"), []);
+  }, "AÇ, case sensitivity")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "test:BODY"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagNameNS("test", "BODY"), [t]);
+    assert_array_equals(context.getElementsByTagNameNS("test", "body"), []);
+  }, "BODY element in test namespace, prefix")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "test:test"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    var actual = context.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "*");
+    var expected = [];
+    var get_elements = function(node) {
+      for (var i = 0; i < node.childNodes.length; i++) {
+        var child = node.childNodes[i];
+        if (child.nodeType === child.ELEMENT_NODE) {
+          if (child !== t) {
+            expected.push(child);
+          }
+          get_elements(child);
+        }
+      }
+    }
+    get_elements(context);
+    assert_array_equals(actual, expected);
+  }, "getElementsByTagNameNS('http://www.w3.org/1999/xhtml', '*')")
+
+  test(function() {
+    var actual = context.getElementsByTagNameNS("*", "*");
+    var expected = [];
+    var get_elements = function(node) {
+      for (var i = 0; i < node.childNodes.length; i++) {
+        var child = node.childNodes[i];
+        if (child.nodeType === child.ELEMENT_NODE) {
+          expected.push(child);
+          get_elements(child);
+        }
+      }
+    }
+    get_elements(context);
+    assert_array_equals(actual, expected);
+  }, "getElementsByTagNameNS('*', '*')")
+
+  test(function() {
+    assert_array_equals(context.getElementsByTagNameNS("**", "*"), []);
+    assert_array_equals(context.getElementsByTagNameNS(null, "0"), []);
+    assert_array_equals(context.getElementsByTagNameNS(null, "div"), []);
+  }, "Empty lists")
+}
diff --git a/testing/web-platform/tests/dom/nodes/Document-URL.sub.html b/testing/web-platform/tests/dom/nodes/Document-URL.sub.html
new file mode 100644
index 000000000..8e9601107
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-URL.sub.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Document.URL with redirect</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement("iframe");
+  iframe.src = "/common/redirect.py?location=/common/blank.html";
+  document.body.appendChild(iframe);
+  this.add_cleanup(function() { document.body.removeChild(iframe); });
+  iframe.onload = this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.URL,
+                  "http://{{host}}:{{ports[http][0]}}/common/blank.html");
+  });
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-adoptNode.html b/testing/web-platform/tests/dom/nodes/Document-adoptNode.html
new file mode 100644
index 000000000..584d5d9fe
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-adoptNode.html
@@ -0,0 +1,50 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Document.adoptNode</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-adoptnode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<!--creates an element with local name "x<": --><x<>x</x<>
+<script>
+test(function() {
+  var y = document.getElementsByTagName("x<")[0]
+  var child = y.firstChild
+  assert_equals(y.parentNode, document.body)
+  assert_equals(y.ownerDocument, document)
+  assert_equals(document.adoptNode(y), y)
+  assert_equals(y.parentNode, null)
+  assert_equals(y.firstChild, child)
+  assert_equals(y.ownerDocument, document)
+  assert_equals(child.ownerDocument, document)
+  var doc = document.implementation.createDocument(null, null, null)
+  assert_equals(doc.adoptNode(y), y)
+  assert_equals(y.parentNode, null)
+  assert_equals(y.firstChild, child)
+  assert_equals(y.ownerDocument, doc)
+  assert_equals(child.ownerDocument, doc)
+}, "Adopting an Element called 'x<' should work.")
+
+test(function() {
+  var x = document.createElement(":good:times:")
+  assert_equals(document.adoptNode(x), x);
+  var doc = document.implementation.createDocument(null, null, null)
+  assert_equals(doc.adoptNode(x), x)
+  assert_equals(x.parentNode, null)
+  assert_equals(x.ownerDocument, doc)
+}, "Adopting an Element called ':good:times:' should work.")
+
+test(function() {
+  var doctype = document.doctype;
+  assert_equals(doctype.parentNode, document)
+  assert_equals(doctype.ownerDocument, document)
+  assert_equals(document.adoptNode(doctype), doctype)
+  assert_equals(doctype.parentNode, null)
+  assert_equals(doctype.ownerDocument, document)
+}, "Explicitly adopting a DocumentType should work.")
+
+test(function() {
+  var doc = document.implementation.createDocument(null, null, null)
+  assert_throws("NOT_SUPPORTED_ERR", function() { document.adoptNode(doc) })
+}, "Adopting a Document should throw.")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-characterSet-normalization.html b/testing/web-platform/tests/dom/nodes/Document-characterSet-normalization.html
new file mode 100644
index 000000000..746792fb7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-characterSet-normalization.html
@@ -0,0 +1,373 @@
+<!doctype html>
+<title>document.characterSet (inputEncoding and charset as aliases) normalization tests</title>
+<link rel=author title="Aryeh Gregor" href=ayg@aryeh.name>
+<meta name=timeout content=long>
+<div id=log></div>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<style>iframe { display: none }</style>
+<script>
+"use strict";
+
+// Taken straight from https://encoding.spec.whatwg.org/
+var encodingMap = {
+  "UTF-8": [
+    "unicode-1-1-utf-8",
+    "utf-8",
+    "utf8",
+    // As we use <meta>, utf-16 will map to utf-8 per
+    // https://html.spec.whatwg.org/multipage/#documentEncoding
+    "utf-16",
+    "utf-16le",
+    "utf-16be",
+  ],
+  "IBM866": [
+    "866",
+    "cp866",
+    "csibm866",
+    "ibm866",
+  ],
+  "ISO-8859-2": [
+    "csisolatin2",
+    "iso-8859-2",
+    "iso-ir-101",
+    "iso8859-2",
+    "iso88592",
+    "iso_8859-2",
+    "iso_8859-2:1987",
+    "l2",
+    "latin2",
+  ],
+  "ISO-8859-3": [
+    "csisolatin3",
+    "iso-8859-3",
+    "iso-ir-109",
+    "iso8859-3",
+    "iso88593",
+    "iso_8859-3",
+    "iso_8859-3:1988",
+    "l3",
+    "latin3",
+  ],
+  "ISO-8859-4": [
+    "csisolatin4",
+    "iso-8859-4",
+    "iso-ir-110",
+    "iso8859-4",
+    "iso88594",
+    "iso_8859-4",
+    "iso_8859-4:1988",
+    "l4",
+    "latin4",
+  ],
+  "ISO-8859-5": [
+    "csisolatincyrillic",
+    "cyrillic",
+    "iso-8859-5",
+    "iso-ir-144",
+    "iso8859-5",
+    "iso88595",
+    "iso_8859-5",
+    "iso_8859-5:1988",
+  ],
+  "ISO-8859-6": [
+    "arabic",
+    "asmo-708",
+    "csiso88596e",
+    "csiso88596i",
+    "csisolatinarabic",
+    "ecma-114",
+    "iso-8859-6",
+    "iso-8859-6-e",
+    "iso-8859-6-i",
+    "iso-ir-127",
+    "iso8859-6",
+    "iso88596",
+    "iso_8859-6",
+    "iso_8859-6:1987",
+  ],
+  "ISO-8859-7": [
+    "csisolatingreek",
+    "ecma-118",
+    "elot_928",
+    "greek",
+    "greek8",
+    "iso-8859-7",
+    "iso-ir-126",
+    "iso8859-7",
+    "iso88597",
+    "iso_8859-7",
+    "iso_8859-7:1987",
+    "sun_eu_greek",
+  ],
+  "ISO-8859-8": [
+    "csiso88598e",
+    "csisolatinhebrew",
+    "hebrew",
+    "iso-8859-8",
+    "iso-8859-8-e",
+    "iso-ir-138",
+    "iso8859-8",
+    "iso88598",
+    "iso_8859-8",
+    "iso_8859-8:1988",
+    "visual",
+  ],
+  "ISO-8859-8-I": [
+    "csiso88598i",
+    "iso-8859-8-i",
+    "logical",
+  ],
+  "ISO-8859-10": [
+    "csisolatin6",
+    "iso-8859-10",
+    "iso-ir-157",
+    "iso8859-10",
+    "iso885910",
+    "l6",
+    "latin6",
+  ],
+  "ISO-8859-13": [
+    "iso-8859-13",
+    "iso8859-13",
+    "iso885913",
+  ],
+  "ISO-8859-14": [
+    "iso-8859-14",
+    "iso8859-14",
+    "iso885914",
+  ],
+  "ISO-8859-15": [
+    "csisolatin9",
+    "iso-8859-15",
+    "iso8859-15",
+    "iso885915",
+    "iso_8859-15",
+    "l9",
+  ],
+  "ISO-8859-16": [
+    "iso-8859-16",
+  ],
+  "KOI8-R": [
+    "cskoi8r",
+    "koi",
+    "koi8",
+    "koi8-r",
+    "koi8_r",
+  ],
+  "KOI8-U": [
+    "koi8-ru",
+    "koi8-u",
+  ],
+  "macintosh": [
+    "csmacintosh",
+    "mac",
+    "macintosh",
+    "x-mac-roman",
+  ],
+  "windows-874": [
+    "dos-874",
+    "iso-8859-11",
+    "iso8859-11",
+    "iso885911",
+    "tis-620",
+    "windows-874",
+  ],
+  "windows-1250": [
+    "cp1250",
+    "windows-1250",
+    "x-cp1250",
+  ],
+  "windows-1251": [
+    "cp1251",
+    "windows-1251",
+    "x-cp1251",
+  ],
+  "windows-1252": [
+    "ansi_x3.4-1968",
+    "ascii",
+    "cp1252",
+    "cp819",
+    "csisolatin1",
+    "ibm819",
+    "iso-8859-1",
+    "iso-ir-100",
+    "iso8859-1",
+    "iso88591",
+    "iso_8859-1",
+    "iso_8859-1:1987",
+    "l1",
+    "latin1",
+    "us-ascii",
+    "windows-1252",
+    "x-cp1252",
+    // As we use <meta>, x-user-defined will map to windows-1252 per
+    // https://html.spec.whatwg.org/multipage/#documentEncoding
+    "x-user-defined"
+  ],
+  "windows-1253": [
+    "cp1253",
+    "windows-1253",
+    "x-cp1253",
+  ],
+  "windows-1254": [
+    "cp1254",
+    "csisolatin5",
+    "iso-8859-9",
+    "iso-ir-148",
+    "iso8859-9",
+    "iso88599",
+    "iso_8859-9",
+    "iso_8859-9:1989",
+    "l5",
+    "latin5",
+    "windows-1254",
+    "x-cp1254",
+  ],
+  "windows-1255": [
+    "cp1255",
+    "windows-1255",
+    "x-cp1255",
+  ],
+  "windows-1256": [
+    "cp1256",
+    "windows-1256",
+    "x-cp1256",
+  ],
+  "windows-1257": [
+    "cp1257",
+    "windows-1257",
+    "x-cp1257",
+  ],
+  "windows-1258": [
+    "cp1258",
+    "windows-1258",
+    "x-cp1258",
+  ],
+  "x-mac-cyrillic": [
+    "x-mac-cyrillic",
+    "x-mac-ukrainian",
+  ],
+  "GBK": [
+    "chinese",
+    "csgb2312",
+    "csiso58gb231280",
+    "gb2312",
+    "gb_2312",
+    "gb_2312-80",
+    "gbk",
+    "iso-ir-58",
+    "x-gbk",
+  ],
+  "gb18030": [
+    "gb18030",
+  ],
+  "Big5": [
+    "big5",
+    "big5-hkscs",
+    "cn-big5",
+    "csbig5",
+    "x-x-big5",
+  ],
+  "EUC-JP": [
+    "cseucpkdfmtjapanese",
+    "euc-jp",
+    "x-euc-jp",
+  ],
+  "ISO-2022-JP": [
+    "csiso2022jp",
+    "iso-2022-jp",
+  ],
+  "Shift_JIS": [
+    "csshiftjis",
+    "ms932",
+    "ms_kanji",
+    "shift-jis",
+    "shift_jis",
+    "sjis",
+    "windows-31j",
+    "x-sjis",
+  ],
+  "EUC-KR": [
+    "cseuckr",
+    "csksc56011987",
+    "euc-kr",
+    "iso-ir-149",
+    "korean",
+    "ks_c_5601-1987",
+    "ks_c_5601-1989",
+    "ksc5601",
+    "ksc_5601",
+    "windows-949",
+  ],
+  "replacement": [
+    "csiso2022kr",
+    "hz-gb-2312",
+    "iso-2022-cn",
+    "iso-2022-cn-ext",
+    "iso-2022-kr",
+  ],
+};
+
+// Add spaces and mix up case
+Object.keys(encodingMap).forEach(function(name) {
+  var lower = encodingMap[name];
+  var upper = encodingMap[name].map(function(s) { return s.toUpperCase() });
+  var mixed = encodingMap[name].map(function(s) {
+    var ret = "";
+    for (var i = 0; i < s.length; i += 2) {
+      ret += s[i].toUpperCase();
+      if (i + 1 < s.length) {
+        ret += s[i + 1];
+      }
+    }
+    return ret;
+  });
+  var spacey = encodingMap[name].map(function(s) {
+    return " \t\n\f\r" + s + " \t\n\f\r";
+  });
+  encodingMap[name] = [];
+  for (var i = 0; i < lower.length; i++) {
+    encodingMap[name].push(lower[i]);
+    /*
+    if (lower[i] != upper[i]) {
+      encodingMap[name].push(upper[i]);
+    }
+    if (lower[i] != mixed[i] && upper[i] != mixed[i]) {
+      encodingMap[name].push(mixed[i]);
+    }
+    encodingMap[name].push(spacey[i]);
+    */
+  }
+});
+
+Object.keys(encodingMap).forEach(function(name) {
+  encodingMap[name].forEach(function(label) {
+    var iframe = document.createElement("iframe");
+    var t = async_test("Name " + format_value(name) +
+                       " has label " + format_value(label) + " (characterSet)");
+    var t2 = async_test("Name " + format_value(name) +
+                       " has label " + format_value(label) + " (inputEncoding)");
+    var t3 = async_test("Name " + format_value(name) +
+                       " has label " + format_value(label) + " (charset)");
+    iframe.src = "encoding.py?label=" + label;
+    iframe.onload = function() {
+      t.step(function() {
+        assert_equals(iframe.contentDocument.characterSet, name);
+      });
+      t2.step(function() {
+        assert_equals(iframe.contentDocument.inputEncoding, name);
+      });
+      t3.step(function() {
+        assert_equals(iframe.contentDocument.charset, name);
+      });
+      document.body.removeChild(iframe);
+      t.done();
+      t2.done();
+      t3.done();
+    };
+    document.body.appendChild(iframe);
+  });
+});
+</script>
+<!-- vim: set expandtab tabstop=2 shiftwidth=2: -->
diff --git a/testing/web-platform/tests/dom/nodes/Document-constructor.html b/testing/web-platform/tests/dom/nodes/Document-constructor.html
new file mode 100644
index 000000000..11549da4a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-constructor.html
@@ -0,0 +1,53 @@
+<!doctype html>
+<meta charset=windows-1252>
+<!-- Using windows-1252 to ensure that new Document() doesn't inherit utf-8
+     from the parent document. -->
+<title>Document constructor</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var doc = new Document();
+  assert_true(doc instanceof Node, "Should be a Node");
+  assert_true(doc instanceof Document, "Should be a Document");
+  assert_false(doc instanceof XMLDocument, "Should not be an XMLDocument");
+  assert_equals(Object.getPrototypeOf(doc), Document.prototype,
+                "Document should be the primary interface");
+}, "new Document(): interfaces")
+
+test(function() {
+  var doc = new Document();
+  assert_equals(doc.firstChild, null, "firstChild");
+  assert_equals(doc.lastChild, null, "lastChild");
+  assert_equals(doc.doctype, null, "doctype");
+  assert_equals(doc.documentElement, null, "documentElement");
+  assert_array_equals(doc.childNodes, [], "childNodes");
+}, "new Document(): children")
+
+test(function() {
+  var doc = new Document();
+  assert_equals(doc.URL, "about:blank");
+  assert_equals(doc.documentURI, "about:blank");
+  assert_equals(doc.compatMode, "CSS1Compat");
+  assert_equals(doc.characterSet, "UTF-8");
+  assert_equals(doc.contentType, "application/xml");
+  assert_equals(doc.createElement("DIV").localName, "DIV");
+}, "new Document(): metadata")
+
+test(function() {
+  var doc = new Document();
+  assert_equals(doc.characterSet, "UTF-8", "characterSet");
+  assert_equals(doc.charset, "UTF-8", "charset");
+  assert_equals(doc.inputEncoding, "UTF-8", "inputEncoding");
+}, "new Document(): characterSet aliases")
+
+test(function() {
+  var doc = new Document();
+  var a = doc.createElement("a");
+  // In UTF-8: 0xC3 0xA4
+  a.href = "http://example.org/?\u00E4";
+  assert_equals(a.href, "http://example.org/?%C3%A4");
+}, "new Document(): URL parsing")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_bmp.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_bmp.html
new file mode 100644
index 000000000..828643741
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_bmp.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>BMP document.contentType === 'image/bmp'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "image/bmp");
+  }), false);
+  iframe.src = "../resources/t.bmp";
+  document.body.appendChild(iframe);
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_css.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_css.html
new file mode 100644
index 000000000..0eb35edd5
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_css.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>CSS document.contentType === 'text/css'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "text/css");
+  }), false);
+  iframe.src = "../resources/style.css";
+  document.body.appendChild(iframe);
+});
+</script>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_datauri_01.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_datauri_01.html
new file mode 100644
index 000000000..79c63644d
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_datauri_01.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Data URI document.contentType === 'text/plain' when data URI MIME type is not set</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "text/plain");
+  }), false);
+  iframe.src = "data:;,<!DOCTYPE html>";
+  document.body.appendChild(iframe);
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_datauri_02.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_datauri_02.html
new file mode 100644
index 000000000..2e82c7c1f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_datauri_02.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Data URI document.contentType === 'text/html' when data URI MIME type is set</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "text/html");
+  }), false);
+  iframe.src = "data:text/html;charset=utf-8,<!DOCTYPE html>";
+  document.body.appendChild(iframe);
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_gif.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_gif.html
new file mode 100644
index 000000000..8dd66dae5
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_gif.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>GIF document.contentType === 'image/gif'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "image/gif");
+  }), false);
+  iframe.src = "../resources/t.gif";
+  document.body.appendChild(iframe);
+});
+</script>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_html.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_html.html
new file mode 100644
index 000000000..2b2d7263e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_html.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>HTM document.contentType === 'text/html'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "text/html");
+  }), false);
+  iframe.src = "../resources/blob.htm";
+  document.body.appendChild(iframe);
+});
+</script>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_javascripturi.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_javascripturi.html
new file mode 100644
index 000000000..956589615
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_javascripturi.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>Javascript URI document.contentType === 'text/html'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "text/html");
+    assert_equals(iframe.contentDocument.documentElement.textContent, "text/html");
+  }), false);
+  iframe.src = "javascript:document.contentType";
+  document.body.appendChild(iframe);
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_jpg.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_jpg.html
new file mode 100644
index 000000000..13f57ec8b
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_jpg.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>JPG document.contentType === 'image/jpeg'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "image/jpeg");
+  }), false);
+  iframe.src = "../resources/t.jpg";
+  document.body.appendChild(iframe);
+});
+</script>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_mimeheader_01.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_mimeheader_01.html
new file mode 100644
index 000000000..87885efba
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_mimeheader_01.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Custom document.contentType === 'text/xml' when explicitly set to this value</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "text/xml");
+  }), false);
+  iframe.src = "../support/contenttype_setter.py?type=text&subtype=xml";
+  document.body.appendChild(iframe);
+});
+</script>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_mimeheader_02.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_mimeheader_02.html
new file mode 100644
index 000000000..33870147f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_mimeheader_02.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Custom document.contentType === 'text/html' when explicitly set to this value and an attempt is made to override this value in an HTML meta header</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "text/html");
+  }), false);
+  iframe.src = "../support/contenttype_setter.py?type=text&subtype=html&mimeHead=text%2Fxml";
+  document.body.appendChild(iframe);
+});
+</script>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_png.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_png.html
new file mode 100644
index 000000000..a214ad3e9
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_png.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>PNG document.contentType === 'image/png'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "image/png");
+  }), false);
+  iframe.src = "../resources/t.png";
+  document.body.appendChild(iframe);
+});
+</script>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_txt.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_txt.html
new file mode 100644
index 000000000..f40f641fb
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_txt.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>TXT document.contentType === 'text/plain'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "text/plain");
+  }), false);
+  iframe.src = "../resources/blob.txt";
+  document.body.appendChild(iframe);
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_xml.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_xml.html
new file mode 100644
index 000000000..c382de849
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/contenttype_xml.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>XML document.contentType === 'application/xml'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var iframe = document.createElement('iframe');
+  iframe.addEventListener('load', this.step_func_done(function() {
+    assert_equals(iframe.contentDocument.contentType, "application/xml");
+  }), false);
+  iframe.src = "../resources/blob.xml";
+  document.body.appendChild(iframe);
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/createDocument.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/createDocument.html
new file mode 100644
index 000000000..78a952de4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/createDocument.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<title>document.implementation.createDocument: document.contentType === 'application/xhtml+xml'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+test(function() {
+  var doc = document.implementation.createDocument("http://www.w3.org/1999/xhtml", "html", null);
+  assert_equals(doc.contentType, "application/xhtml+xml");
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/createHTMLDocument.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/createHTMLDocument.html
new file mode 100644
index 000000000..185e3c8c9
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/createHTMLDocument.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<title>document.implementation.createHTMLDocument: document.contentType === 'text/html'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+test(function() {
+  var doc = document.implementation.createHTMLDocument("test");
+  assert_equals(doc.contentType, "text/html");
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/xhr_responseType_document.html b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/xhr_responseType_document.html
new file mode 100644
index 000000000..c2fb6c19f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/contentType/xhr_responseType_document.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>XHR - retrieve HTML document: document.contentType === 'application/xml'</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var xhr = new XMLHttpRequest();
+  xhr.open("GET", "../resources/blob.xml");
+  xhr.responseType = "document";
+  xhr.onload = this.step_func_done(function(response) {
+    assert_equals(xhr.readyState, 4);
+    assert_equals(xhr.status, 200);
+    assert_equals(xhr.responseXML.contentType, "application/xml");
+  });
+  xhr.send(null);
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/resources/blob.htm b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/blob.htm
new file mode 100644
index 000000000..9d235ed07
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/blob.htm
@@ -0,0 +1 @@
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/resources/blob.txt b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/blob.txt
new file mode 100644
index 000000000..9d235ed07
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/blob.txt
@@ -0,0 +1 @@
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/resources/blob.xml b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/blob.xml
new file mode 100644
index 000000000..0922ed14b
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/blob.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<blob>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</blob>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/resources/lib.js b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/lib.js
new file mode 100644
index 000000000..c41d336c0
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/lib.js
@@ -0,0 +1 @@
+var t;
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/resources/style.css b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/style.css
new file mode 100644
index 000000000..bb4ff575b
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/style.css
@@ -0,0 +1,12 @@
+.unknown
+{
+  background-color:lightblue;
+}
+.pass
+{
+  background-color:lime;
+}
+.fail
+{
+  background-color:red;
+}
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.bmp b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.bmp
new file mode 100644
index 000000000..5697c0aef
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.bmp
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.gif b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.gif
new file mode 100644
index 000000000..91f269207
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.gif
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.jpg b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.jpg
new file mode 100644
index 000000000..72b51899e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.jpg
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.png b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.png
new file mode 100644
index 000000000..447d9e301
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/resources/t.png
diff --git a/testing/web-platform/tests/dom/nodes/Document-contentType/support/contenttype_setter.py b/testing/web-platform/tests/dom/nodes/Document-contentType/support/contenttype_setter.py
new file mode 100644
index 000000000..02eff653c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-contentType/support/contenttype_setter.py
@@ -0,0 +1,20 @@
+def main(request, response):
+    type = request.GET.first("type", None)
+    subtype = request.GET.first("subtype", None)
+    if type and subtype:
+        response.headers["Content-Type"] = type + "/" + subtype
+
+    removeContentType = request.GET.first("removeContentType", None)
+    if removeContentType:
+        try:
+            del response.headers["Content-Type"]
+        except KeyError:
+            pass
+
+    content = '<head>'
+    mimeHead = request.GET.first("mime", None);
+    if mimeHead:
+        content += '<meta http-equiv="Content-Type" content="%s; charset=utf-8"/>' % mimeHead
+    content += "</head>"
+
+    return content
diff --git a/testing/web-platform/tests/dom/nodes/Document-createAttribute.html b/testing/web-platform/tests/dom/nodes/Document-createAttribute.html
new file mode 100644
index 000000000..b5afa6ed7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createAttribute.html
@@ -0,0 +1,43 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Document.createAttribute</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=attributes.js></script>
+<script src=productions.js></script>
+<div id=log>
+<script>
+var xml_document;
+setup(function() {
+  xml_document = document.implementation.createDocument(null, null, null);
+});
+
+invalid_names.forEach(function(name) {
+  test(function() {
+    assert_throws("INVALID_CHARACTER_ERR", function() {
+      document.createAttribute(name, "test");
+    });
+  }, "HTML document.createAttribute(" + format_value(name) + ")");
+
+  test(function() {
+    assert_throws("INVALID_CHARACTER_ERR", function() {
+      xml_document.createAttribute(name, "test");
+    });
+  }, "XML document.createAttribute(" + format_value(name) + ")");
+});
+
+var tests = ["title", "TITLE", null, undefined];
+tests.forEach(function(name) {
+  test(function() {
+    var attribute = document.createAttribute(name);
+    attr_is(attribute, "", String(name).toLowerCase(), null, null, String(name).toLowerCase());
+    assert_equals(attribute.ownerElement, null);
+  }, "HTML document.createAttribute(" + format_value(name) + ")");
+
+  test(function() {
+    var attribute = xml_document.createAttribute(name);
+    attr_is(attribute, "", String(name), null, null, String(name));
+    assert_equals(attribute.ownerElement, null);
+  }, "XML document.createAttribute(" + format_value(name) + ")");
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createComment-createTextNode.js b/testing/web-platform/tests/dom/nodes/Document-createComment-createTextNode.js
new file mode 100644
index 000000000..62a38d380
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createComment-createTextNode.js
@@ -0,0 +1,22 @@
+function test_create(method, iface, nodeType, nodeName) {
+  ["\u000b", "a -- b", "a-", "-b", null, undefined].forEach(function(value) {
+    test(function() {
+      var c = document[method](value);
+      var expected = String(value);
+      assert_true(c instanceof iface);
+      assert_true(c instanceof CharacterData);
+      assert_true(c instanceof Node);
+      assert_equals(c.ownerDocument, document);
+      assert_equals(c.data, expected, "data");
+      assert_equals(c.nodeValue, expected, "nodeValue");
+      assert_equals(c.textContent, expected, "textContent");
+      assert_equals(c.length, expected.length);
+      assert_equals(c.nodeType, nodeType);
+      assert_equals(c.nodeName, nodeName);
+      assert_equals(c.hasChildNodes(), false);
+      assert_equals(c.childNodes.length, 0);
+      assert_equals(c.firstChild, null);
+      assert_equals(c.lastChild, null);
+    }, method + "(" + format_value(value) + ")");
+  });
+}
diff --git a/testing/web-platform/tests/dom/nodes/Document-createComment.html b/testing/web-platform/tests/dom/nodes/Document-createComment.html
new file mode 100644
index 000000000..a175c3a2f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createComment.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.createComment</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createcomment">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-ownerdocument">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodevalue">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-textcontent">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-length">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodetype">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-haschildnodes">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-childnodes">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-firstchild">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-lastchild">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-createComment-createTextNode.js"></script>
+<div id="log"></div>
+<script>
+test_create("createComment", Comment, 8, "#comment");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.html
new file mode 100644
index 000000000..b80a99a78
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.html
@@ -0,0 +1 @@
+<math></math>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.svg
new file mode 100644
index 000000000..b80a99a78
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.svg
@@ -0,0 +1 @@
+<math></math>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.xhtml
new file mode 100644
index 000000000..b80a99a78
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.xhtml
@@ -0,0 +1 @@
+<math></math>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.xml
new file mode 100644
index 000000000..b80a99a78
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_mathml.xml
@@ -0,0 +1 @@
+<math></math>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.html
new file mode 100644
index 000000000..dc1ced5b6
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.html
@@ -0,0 +1 @@
+<svg></svg>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.svg
new file mode 100644
index 000000000..dc1ced5b6
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.svg
@@ -0,0 +1 @@
+<svg></svg>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.xhtml
new file mode 100644
index 000000000..dc1ced5b6
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.xhtml
@@ -0,0 +1 @@
+<svg></svg>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.xml
new file mode 100644
index 000000000..dc1ced5b6
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_svg.xml
@@ -0,0 +1 @@
+<svg></svg>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.html
new file mode 100644
index 000000000..6c70bcfe4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.html
@@ -0,0 +1 @@
+<html></html>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.svg
new file mode 100644
index 000000000..6c70bcfe4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.svg
@@ -0,0 +1 @@
+<html></html>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.xhtml
new file mode 100644
index 000000000..6c70bcfe4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.xhtml
@@ -0,0 +1 @@
+<html></html>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.xml
new file mode 100644
index 000000000..6c70bcfe4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/bare_xhtml.xml
@@ -0,0 +1 @@
+<html></html>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.html
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.html
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.svg
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.svg
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.xhtml
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.xhtml
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.xml
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/empty.xml
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/generate.py b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/generate.py
new file mode 100755
index 000000000..88c4da198
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/generate.py
@@ -0,0 +1,77 @@
+#!/usr/bin/python
+import os
+import sys
+
+THIS_NAME = "generate.py"
+
+# Note: these lists must be kept in sync with the lists in
+# Document-createElement-namespace.html, and this script must be run whenever
+# the lists are updated.  (We could keep the lists in a shared JSON file, but
+# seems like too much effort.)
+FILES = (
+    ("empty", ""),
+    ("minimal_html", "<!doctype html><title></title>"),
+
+    ("xhtml", '<html xmlns="http://www.w3.org/1999/xhtml"></html>'),
+    ("svg", '<svg xmlns="http://www.w3.org/2000/svg"></svg>'),
+    ("mathml", '<mathml xmlns="http://www.w3.org/1998/Math/MathML"></mathml>'),
+
+    ("bare_xhtml", "<html></html>"),
+    ("bare_svg", "<svg></svg>"),
+    ("bare_mathml", "<math></math>"),
+
+    ("xhtml_ns_removed", """\
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS(null, "html");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
+"""),
+    ("xhtml_ns_changed", """\
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS("http://www.w3.org/2000/svg", "abc");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
+"""),
+)
+
+EXTENSIONS = (
+    "html",
+    "xhtml",
+    "xml",
+    "svg",
+    # Was not able to get server MIME type working properly :(
+    #"mml",
+)
+
+def __main__():
+    if len(sys.argv) > 1:
+        print "No arguments expected, aborting"
+        return
+
+    if not os.access(THIS_NAME, os.F_OK):
+        print "Must be run from the directory of " + THIS_NAME + ", aborting"
+        return
+
+    for name in os.listdir("."):
+        if name == THIS_NAME:
+            continue
+        os.remove(name)
+
+    manifest = open("MANIFEST", "w")
+
+    for name, contents in FILES:
+        for extension in EXTENSIONS:
+            f = open(name + "." + extension, "w")
+            f.write(contents)
+            f.close()
+            manifest.write("support " + name + "." + extension + "\n")
+
+    manifest.close()
+
+__main__()
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.html
new file mode 100644
index 000000000..0bec8e99e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.html
@@ -0,0 +1 @@
+<mathml xmlns="http://www.w3.org/1998/Math/MathML"></mathml>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.svg
new file mode 100644
index 000000000..0bec8e99e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.svg
@@ -0,0 +1 @@
+<mathml xmlns="http://www.w3.org/1998/Math/MathML"></mathml>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.xhtml
new file mode 100644
index 000000000..0bec8e99e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.xhtml
@@ -0,0 +1 @@
+<mathml xmlns="http://www.w3.org/1998/Math/MathML"></mathml>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.xml
new file mode 100644
index 000000000..0bec8e99e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/mathml.xml
@@ -0,0 +1 @@
+<mathml xmlns="http://www.w3.org/1998/Math/MathML"></mathml>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.html
new file mode 100644
index 000000000..a33d9859a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.html
@@ -0,0 +1 @@
+<!doctype html><title></title>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.svg
new file mode 100644
index 000000000..a33d9859a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.svg
@@ -0,0 +1 @@
+<!doctype html><title></title>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.xhtml
new file mode 100644
index 000000000..a33d9859a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.xhtml
@@ -0,0 +1 @@
+<!doctype html><title></title>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.xml
new file mode 100644
index 000000000..a33d9859a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/minimal_html.xml
@@ -0,0 +1 @@
+<!doctype html><title></title>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.html
new file mode 100644
index 000000000..64def4af7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.html
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg"></svg>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.svg
new file mode 100644
index 000000000..64def4af7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg"></svg>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.xhtml
new file mode 100644
index 000000000..64def4af7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.xhtml
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg"></svg>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.xml
new file mode 100644
index 000000000..64def4af7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/svg.xml
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg"></svg>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.html
new file mode 100644
index 000000000..1cba99824
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.html
@@ -0,0 +1 @@
+<html xmlns="http://www.w3.org/1999/xhtml"></html>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.svg
new file mode 100644
index 000000000..1cba99824
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.svg
@@ -0,0 +1 @@
+<html xmlns="http://www.w3.org/1999/xhtml"></html>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.xhtml
new file mode 100644
index 000000000..1cba99824
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.xhtml
@@ -0,0 +1 @@
+<html xmlns="http://www.w3.org/1999/xhtml"></html>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.xml
new file mode 100644
index 000000000..1cba99824
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml.xml
@@ -0,0 +1 @@
+<html xmlns="http://www.w3.org/1999/xhtml"></html>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.html
new file mode 100644
index 000000000..b228c7f74
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.html
@@ -0,0 +1,7 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS("http://www.w3.org/2000/svg", "abc");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.svg
new file mode 100644
index 000000000..b228c7f74
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.svg
@@ -0,0 +1,7 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS("http://www.w3.org/2000/svg", "abc");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.xhtml
new file mode 100644
index 000000000..b228c7f74
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.xhtml
@@ -0,0 +1,7 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS("http://www.w3.org/2000/svg", "abc");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.xml
new file mode 100644
index 000000000..b228c7f74
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_changed.xml
@@ -0,0 +1,7 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS("http://www.w3.org/2000/svg", "abc");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.html
new file mode 100644
index 000000000..dba395fed
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.html
@@ -0,0 +1,7 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS(null, "html");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.svg b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.svg
new file mode 100644
index 000000000..dba395fed
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.svg
@@ -0,0 +1,7 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS(null, "html");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.xhtml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.xhtml
new file mode 100644
index 000000000..dba395fed
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.xhtml
@@ -0,0 +1,7 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS(null, "html");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.xml b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.xml
new file mode 100644
index 000000000..dba395fed
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace-tests/xhtml_ns_removed.xml
@@ -0,0 +1,7 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head><script>
+    var newRoot = document.createElementNS(null, "html");
+    document.removeChild(document.documentElement);
+    document.appendChild(newRoot);
+  </script></head>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement-namespace.html b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace.html
new file mode 100644
index 000000000..add66bf9a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement-namespace.html
@@ -0,0 +1,119 @@
+<!doctype html>
+<title>document.createElement() namespace tests</title>
+<link rel=author title="Aryeh Gregor" href=ayg@aryeh.name>
+<div id=log></div>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+"use strict";
+/**
+ * This tests the namespace of elements created by the Document interface's
+ * createElement() method.  See bug:
+ * https://www.w3.org/Bugs/Public/show_bug.cgi?id=19431
+ */
+
+/**
+ * Test that an element created using the Document object doc has the namespace
+ * that would be expected for the given contentType.
+ */
+function testDoc(doc, contentType) {
+  if (doc.contentType !== undefined) {
+    // Sanity check
+    assert_equals(doc.contentType, contentType,
+                  "Wrong MIME type returned from doc.contentType");
+  }
+
+  var expectedNamespace = contentType == "text/html" ||
+                          contentType == "application/xhtml+xml"
+                          ? "http://www.w3.org/1999/xhtml" : null;
+
+  assert_equals(doc.createElement("x").namespaceURI, expectedNamespace);
+}
+
+// First test various objects we create in JS
+test(function() {
+  testDoc(document, "text/html")
+}, "Created element's namespace in current document");
+test(function() {
+  testDoc(document.implementation.createHTMLDocument(""), "text/html");
+}, "Created element's namespace in created HTML document");
+test(function() {
+  testDoc(document.implementation.createDocument(null, "", null),
+          "application/xml");
+}, "Created element's namespace in created XML document");
+test(function() {
+  testDoc(document.implementation.createDocument("http://www.w3.org/1999/xhtml", "html", null),
+          "application/xhtml+xml");
+}, "Created element's namespace in created XHTML document");
+test(function() {
+  testDoc(document.implementation.createDocument("http://www.w3.org/2000/svg", "svg", null),
+          "image/svg+xml");
+}, "Created element's namespace in created SVG document");
+test(function() {
+  testDoc(document.implementation.createDocument("http://www.w3.org/1998/Math/MathML", "math", null),
+          "application/xml");
+}, "Created element's namespace in created MathML document");
+
+// Second also test document created by DOMParser
+test(function() {
+  testDoc(new DOMParser().parseFromString("", "text/html"), "text/html");
+}, "Created element's namespace in created HTML document by DOMParser ('text/html')");
+test(function() {
+  testDoc(new DOMParser().parseFromString("<root/>", "text/xml"), "text/xml");
+}, "Created element's namespace in created XML document by DOMParser ('text/xml')");
+test(function() {
+  testDoc(new DOMParser().parseFromString("<root/>", "application/xml"), "application/xml");
+}, "Created element's namespace in created XML document by DOMParser ('application/xml')");
+test(function() {
+  testDoc(new DOMParser().parseFromString("<html/>", "application/xhtml+xml"), "application/xhtml+xml");
+}, "Created element's namespace in created XHTML document by DOMParser ('application/xhtml+xml')");
+test(function() {
+  testDoc(new DOMParser().parseFromString("<math/>", "image/svg+xml"), "image/svg+xml");
+}, "Created element's namespace in created SVG document by DOMParser ('image/svg+xml')");
+
+// Now for various externally-loaded files.  Note: these lists must be kept
+// synced with the lists in generate.py in the subdirectory, and that script
+// must be run whenever the lists are updated.  (We could keep the lists in a
+// shared JSON file, but it seems like too much effort.)
+var testExtensions = {
+  html: "text/html",
+  xhtml: "application/xhtml+xml",
+  xml: "application/xml",
+  svg: "image/svg+xml",
+  // Was not able to get server MIME type working properly :(
+  //mml: "application/mathml+xml",
+};
+
+var tests = [
+  "empty",
+  "minimal_html",
+
+  "xhtml",
+  "svg",
+  "mathml",
+
+  "bare_xhtml",
+  "bare_svg",
+  "bare_mathml",
+
+  "xhtml_ns_removed",
+  "xhtml_ns_changed",
+];
+
+tests.forEach(function(testName) {
+  Object.keys(testExtensions).forEach(function(ext) {
+    var iframe = document.createElement("iframe");
+    iframe.src = "Document-createElement-namespace-tests/" +
+                 testName + "." + ext;
+    var t = async_test("Created element's namespace in " + testName + "." + ext);
+    iframe.onload = function() {
+      t.step(function() {
+        testDoc(iframe.contentDocument, testExtensions[ext]);
+      });
+      document.body.removeChild(iframe);
+      t.done();
+    };
+    document.body.appendChild(iframe);
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElement.html b/testing/web-platform/tests/dom/nodes/Document-createElement.html
new file mode 100644
index 000000000..bacaff0f6
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElement.html
@@ -0,0 +1,157 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.createElement</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createelement">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-localname">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-tagname">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-prefix">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-namespaceuri">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<iframe src="/common/dummy.xml"></iframe>
+<iframe src="/common/dummy.xhtml"></iframe>
+<script>
+function toASCIIUppercase(str) {
+  var diff = "a".charCodeAt(0) - "A".charCodeAt(0);
+  var res = "";
+  for (var i = 0; i < str.length; ++i) {
+    if ("a" <= str[i] && str[i] <= "z") {
+      res += String.fromCharCode(str.charCodeAt(i) - diff);
+    } else {
+      res += str[i];
+    }
+  }
+  return res;
+}
+function toASCIILowercase(str) {
+  var diff = "a".charCodeAt(0) - "A".charCodeAt(0);
+  var res = "";
+  for (var i = 0; i < str.length; ++i) {
+    if ("A" <= str[i] && str[i] <= "Z") {
+      res += String.fromCharCode(str.charCodeAt(i) + diff);
+    } else {
+      res += str[i];
+    }
+  }
+  return res;
+}
+var HTMLNS = "http://www.w3.org/1999/xhtml",
+    valid = [
+      undefined,
+      null,
+      "foo",
+      "f1oo",
+      "foo1",
+      "f\u0BC6",
+      "foo\u0BC6",
+      ":",
+      ":foo",
+      "f:oo",
+      "foo:",
+      "f:o:o",
+      "f::oo",
+      "f::oo:",
+      "foo:0",
+      "foo:_",
+      // combining char after :, invalid QName but valid Name
+      "foo:\u0BC6",
+      "foo:foo\u0BC6",
+      "foo\u0BC6:foo",
+      "xml",
+      "xmlns",
+      "xmlfoo",
+      "xml:foo",
+      "xmlns:foo",
+      "xmlfoo:bar",
+      "svg",
+      "math",
+      "FOO",
+      // Test that non-ASCII chars don't get uppercased/lowercased
+      "mar\u212a",
+      "\u0130nput",
+      "\u0131nput",
+    ],
+    invalid = [
+      "",
+      "1foo",
+      "1:foo",
+      "fo o",
+      "\u0BC6foo",
+      "}foo",
+      "f}oo",
+      "foo}",
+      "\ufffffoo",
+      "f\uffffoo",
+      "foo\uffff",
+      "<foo",
+      "foo>",
+      "<foo>",
+      "f<oo",
+      "-foo",
+      ".foo",
+      "\u0BC6",
+    ]
+
+var xmlIframe = document.querySelector('[src="/common/dummy.xml"]');
+var xhtmlIframe = document.querySelector('[src="/common/dummy.xhtml"]');
+
+function getWin(desc) {
+  if (desc == "HTML document") {
+    return window;
+  }
+  if (desc == "XML document") {
+    assert_equals(xmlIframe.contentDocument.documentElement.textContent,
+                  "Dummy XML document", "XML document didn't load");
+    return xmlIframe.contentWindow;
+  }
+  if (desc == "XHTML document") {
+    assert_equals(xhtmlIframe.contentDocument.documentElement.textContent,
+                  "Dummy XHTML document", "XHTML document didn't load");
+    return xhtmlIframe.contentWindow;
+  }
+}
+
+
+valid.forEach(function(t) {
+  ["HTML document", "XML document", "XHTML document"].forEach(function(desc) {
+    async_test(function(testObj) {
+      window.addEventListener("load", function() {
+        testObj.step(function() {
+          var win = getWin(desc);
+          var doc = win.document;
+          var elt = doc.createElement(t)
+          assert_true(elt instanceof win.Element, "instanceof Element")
+          assert_true(elt instanceof win.Node, "instanceof Node")
+          assert_equals(elt.localName,
+                        desc == "HTML document" ? toASCIILowercase(String(t))
+                                                : String(t),
+                        "localName")
+          assert_equals(elt.tagName,
+                        desc == "HTML document" ? toASCIIUppercase(String(t))
+                                                : String(t),
+                        "tagName")
+          assert_equals(elt.prefix, null, "prefix")
+          assert_equals(elt.namespaceURI,
+                        desc == "XML document" ? null : HTMLNS, "namespaceURI")
+        });
+        testObj.done();
+      });
+    }, "createElement(" + format_value(t) + ") in " + desc);
+  });
+});
+invalid.forEach(function(arg) {
+  ["HTML document", "XML document", "XHTML document"].forEach(function(desc) {
+    async_test(function(testObj) {
+      window.addEventListener("load", function() {
+        testObj.step(function() {
+          var doc = getWin(desc).document;
+          assert_throws("InvalidCharacterError",
+                        function() { doc.createElement(arg) })
+        });
+        testObj.done();
+      });
+    }, "createElement(" + format_value(arg) + ") in " + desc);
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElementNS.html b/testing/web-platform/tests/dom/nodes/Document-createElementNS.html
new file mode 100644
index 000000000..68341bcd4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElementNS.html
@@ -0,0 +1,226 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.createElementNS</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createelementns">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-createElementNS.js"></script>
+<div id="log"></div>
+<iframe src="/common/dummy.xml"></iframe>
+<iframe src="/common/dummy.xhtml"></iframe>
+<script>
+var tests = createElementNS_tests.concat([
+  /* Arrays with three elements:
+   *   the namespace argument
+   *   the qualifiedName argument
+   *   the expected exception, or null if none
+   */
+  ["", "", "INVALID_CHARACTER_ERR"],
+  [null, null, null],
+  [null, "", "INVALID_CHARACTER_ERR"],
+  [undefined, null, null],
+  [undefined, "", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", null, null],
+  ["http://example.com/", "", "INVALID_CHARACTER_ERR"],
+  ["/", null, null],
+  ["/", "", "INVALID_CHARACTER_ERR"],
+  ["http://www.w3.org/XML/1998/namespace", null, null],
+  ["http://www.w3.org/XML/1998/namespace", "", "INVALID_CHARACTER_ERR"],
+  ["http://www.w3.org/2000/xmlns/", null, "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "", "INVALID_CHARACTER_ERR"],
+  ["foo:", null, null],
+  ["foo:", "", "INVALID_CHARACTER_ERR"],
+])
+
+var xmlIframe = document.querySelector('[src="/common/dummy.xml"]');
+var xhtmlIframe = document.querySelector('[src="/common/dummy.xhtml"]');
+
+function runTest(t, i, desc) {
+  async_test(function(testObj) {
+    window.addEventListener("load", function() {
+      testObj.step(function() {
+        var doc;
+        if (desc == "HTML document") {
+          doc = document;
+        } else if (desc == "XML document") {
+          doc = xmlIframe.contentDocument;
+          // Make sure we're testing the right document
+          assert_equals(doc.documentElement.textContent, "Dummy XML document");
+        } else if (desc == "XHTML document") {
+          doc = xhtmlIframe.contentDocument;
+          assert_equals(doc.documentElement.textContent, "Dummy XHTML document");
+        }
+        var namespace = t[0], qualifiedName = t[1], expected = t[2]
+        if (expected != null) {
+          assert_throws(expected, function() { doc.createElementNS(namespace, qualifiedName) })
+        } else {
+          var element = doc.createElementNS(namespace, qualifiedName)
+          assert_not_equals(element, null)
+          assert_equals(element.nodeType, Node.ELEMENT_NODE)
+          assert_equals(element.nodeType, element.ELEMENT_NODE)
+          assert_equals(element.nodeValue, null)
+          assert_equals(element.ownerDocument, doc)
+          var qualified = String(qualifiedName), names = []
+          if (qualified.indexOf(":") >= 0) {
+            names = qualified.split(":", 2)
+          } else {
+            names = [null, qualified]
+          }
+          assert_equals(element.prefix, names[0])
+          assert_equals(element.localName, names[1])
+          assert_equals(element.tagName, qualified)
+          assert_equals(element.nodeName, qualified)
+          assert_equals(element.namespaceURI,
+                        namespace === undefined || namespace === "" ? null
+                                                                    : namespace)
+        }
+      });
+      testObj.done();
+    });
+  }, "createElementNS test in " + desc + ": " + t.map(format_value))
+}
+
+tests.forEach(function(t, i) {
+  runTest(t, i, "HTML document")
+  runTest(t, i, "XML document")
+  runTest(t, i, "XHTML document")
+})
+
+
+test(function() {
+  var HTMLNS = "http://www.w3.org/1999/xhtml";
+  var element = document.createElementNS(HTMLNS, "span");
+  assert_equals(element.namespaceURI, HTMLNS);
+  assert_equals(element.prefix, null);
+  assert_equals(element.localName, "span");
+  assert_equals(element.tagName, "SPAN");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_true(element instanceof HTMLElement, "Should be an HTMLElement");
+  assert_true(element instanceof HTMLSpanElement, "Should be an HTMLSpanElement");
+}, "Lower-case HTML element without a prefix");
+
+test(function() {
+  var HTMLNS = "http://www.w3.org/1999/xhtml";
+  var element = document.createElementNS(HTMLNS, "html:span");
+  assert_equals(element.namespaceURI, HTMLNS);
+  assert_equals(element.prefix, "html");
+  assert_equals(element.localName, "span");
+  assert_equals(element.tagName, "HTML:SPAN");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_true(element instanceof HTMLElement, "Should be an HTMLElement");
+  assert_true(element instanceof HTMLSpanElement, "Should be an HTMLSpanElement");
+}, "Lower-case HTML element with a prefix");
+
+test(function() {
+  var element = document.createElementNS("test", "span");
+  assert_equals(element.namespaceURI, "test");
+  assert_equals(element.prefix, null);
+  assert_equals(element.localName, "span");
+  assert_equals(element.tagName, "span");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_false(element instanceof HTMLElement, "Should not be an HTMLElement");
+  assert_false(element instanceof HTMLSpanElement, "Should not be an HTMLSpanElement");
+}, "Lower-case non-HTML element without a prefix");
+
+test(function() {
+  var element = document.createElementNS("test", "html:span");
+  assert_equals(element.namespaceURI, "test");
+  assert_equals(element.prefix, "html");
+  assert_equals(element.localName, "span");
+  assert_equals(element.tagName, "html:span");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_false(element instanceof HTMLElement, "Should not be an HTMLElement");
+  assert_false(element instanceof HTMLSpanElement, "Should not be an HTMLSpanElement");
+}, "Lower-case non-HTML element with a prefix");
+
+test(function() {
+  var HTMLNS = "http://www.w3.org/1999/xhtml";
+  var element = document.createElementNS(HTMLNS, "SPAN");
+  assert_equals(element.namespaceURI, HTMLNS);
+  assert_equals(element.prefix, null);
+  assert_equals(element.localName, "SPAN");
+  assert_equals(element.tagName, "SPAN");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_true(element instanceof HTMLElement, "Should be an HTMLElement");
+  assert_true(element instanceof HTMLUnknownElement, "Should be an HTMLUnknownElement");
+  assert_false(element instanceof HTMLSpanElement, "Should not be an HTMLSpanElement");
+}, "Upper-case HTML element without a prefix");
+
+test(function() {
+  var HTMLNS = "http://www.w3.org/1999/xhtml";
+  var element = document.createElementNS(HTMLNS, "html:SPAN");
+  assert_equals(element.namespaceURI, HTMLNS);
+  assert_equals(element.prefix, "html");
+  assert_equals(element.localName, "SPAN");
+  assert_equals(element.tagName, "HTML:SPAN");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_true(element instanceof HTMLElement, "Should be an HTMLElement");
+  assert_false(element instanceof HTMLSpanElement, "Should not be an HTMLSpanElement");
+}, "Upper-case HTML element with a prefix");
+
+test(function() {
+  var element = document.createElementNS("test", "SPAN");
+  assert_equals(element.namespaceURI, "test");
+  assert_equals(element.prefix, null);
+  assert_equals(element.localName, "SPAN");
+  assert_equals(element.tagName, "SPAN");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_false(element instanceof HTMLElement, "Should not be an HTMLElement");
+  assert_false(element instanceof HTMLSpanElement, "Should not be an HTMLSpanElement");
+}, "Upper-case non-HTML element without a prefix");
+
+test(function() {
+  var element = document.createElementNS("test", "html:SPAN");
+  assert_equals(element.namespaceURI, "test");
+  assert_equals(element.prefix, "html");
+  assert_equals(element.localName, "SPAN");
+  assert_equals(element.tagName, "html:SPAN");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_false(element instanceof HTMLElement, "Should not be an HTMLElement");
+  assert_false(element instanceof HTMLSpanElement, "Should not be an HTMLSpanElement");
+}, "Upper-case non-HTML element with a prefix");
+
+test(function() {
+  var element = document.createElementNS(null, "span");
+  assert_equals(element.namespaceURI, null);
+  assert_equals(element.prefix, null);
+  assert_equals(element.localName, "span");
+  assert_equals(element.tagName, "span");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_false(element instanceof HTMLElement, "Should not be an HTMLElement");
+  assert_false(element instanceof HTMLSpanElement, "Should not be an HTMLSpanElement");
+}, "null namespace");
+
+test(function() {
+  var element = document.createElementNS(undefined, "span");
+  assert_equals(element.namespaceURI, null);
+  assert_equals(element.prefix, null);
+  assert_equals(element.localName, "span");
+  assert_equals(element.tagName, "span");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_false(element instanceof HTMLElement, "Should not be an HTMLElement");
+  assert_false(element instanceof HTMLSpanElement, "Should not be an HTMLSpanElement");
+}, "undefined namespace");
+
+test(function() {
+  var element = document.createElementNS("", "span");
+  assert_equals(element.namespaceURI, null);
+  assert_equals(element.prefix, null);
+  assert_equals(element.localName, "span");
+  assert_equals(element.tagName, "span");
+  assert_true(element instanceof Node, "Should be a Node");
+  assert_true(element instanceof Element, "Should be an Element");
+  assert_false(element instanceof HTMLElement, "Should not be an HTMLElement");
+  assert_false(element instanceof HTMLSpanElement, "Should not be an HTMLSpanElement");
+}, "empty string namespace");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createElementNS.js b/testing/web-platform/tests/dom/nodes/Document-createElementNS.js
new file mode 100644
index 000000000..b390712aa
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createElementNS.js
@@ -0,0 +1,185 @@
+var createElementNS_tests = [
+  /* Arrays with three elements:
+   *   the namespace argument
+   *   the qualifiedName argument
+   *   the expected exception, or null if none
+   */
+  [null, null, null],
+  [null, undefined, null],
+  [null, "foo", null],
+  [null, "1foo", "INVALID_CHARACTER_ERR"],
+  [null, "f1oo", null],
+  [null, "foo1", null],
+  [null, "\u0BC6foo", "INVALID_CHARACTER_ERR"],
+  [null, "}foo", "INVALID_CHARACTER_ERR"],
+  [null, "f}oo", "INVALID_CHARACTER_ERR"],
+  [null, "foo}", "INVALID_CHARACTER_ERR"],
+  [null, "\uFFFFfoo", "INVALID_CHARACTER_ERR"],
+  [null, "f\uFFFFoo", "INVALID_CHARACTER_ERR"],
+  [null, "foo\uFFFF", "INVALID_CHARACTER_ERR"],
+  [null, "<foo", "INVALID_CHARACTER_ERR"],
+  [null, "foo>", "INVALID_CHARACTER_ERR"],
+  [null, "<foo>", "INVALID_CHARACTER_ERR"],
+  [null, "f<oo", "INVALID_CHARACTER_ERR"],
+  [null, "^^", "INVALID_CHARACTER_ERR"],
+  [null, "fo o", "INVALID_CHARACTER_ERR"],
+  [null, "-foo", "INVALID_CHARACTER_ERR"],
+  [null, ".foo", "INVALID_CHARACTER_ERR"],
+  [null, ":foo", "NAMESPACE_ERR"],
+  [null, "f:oo", "NAMESPACE_ERR"],
+  [null, "foo:", "NAMESPACE_ERR"],
+  [null, "f:o:o", "NAMESPACE_ERR"],
+  [null, ":", "NAMESPACE_ERR"],
+  [null, "xml", null],
+  [null, "xmlns", "NAMESPACE_ERR"],
+  [null, "xmlfoo", null],
+  [null, "xml:foo", "NAMESPACE_ERR"],
+  [null, "xmlns:foo", "NAMESPACE_ERR"],
+  [null, "xmlfoo:bar", "NAMESPACE_ERR"],
+  [null, "null:xml", "NAMESPACE_ERR"],
+  ["", null, null],
+  ["", ":foo", "NAMESPACE_ERR"],
+  ["", "f:oo", "NAMESPACE_ERR"],
+  ["", "foo:", "NAMESPACE_ERR"],
+  [undefined, null, null],
+  [undefined, undefined, null],
+  [undefined, "foo", null],
+  [undefined, "1foo", "INVALID_CHARACTER_ERR"],
+  [undefined, "f1oo", null],
+  [undefined, "foo1", null],
+  [undefined, ":foo", "NAMESPACE_ERR"],
+  [undefined, "f:oo", "NAMESPACE_ERR"],
+  [undefined, "foo:", "NAMESPACE_ERR"],
+  [undefined, "f::oo", "NAMESPACE_ERR"],
+  [undefined, "xml", null],
+  [undefined, "xmlns", "NAMESPACE_ERR"],
+  [undefined, "xmlfoo", null],
+  [undefined, "xml:foo", "NAMESPACE_ERR"],
+  [undefined, "xmlns:foo", "NAMESPACE_ERR"],
+  [undefined, "xmlfoo:bar", "NAMESPACE_ERR"],
+  ["http://example.com/", "foo", null],
+  ["http://example.com/", "1foo", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "<foo>", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "fo<o", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "-foo", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", ".foo", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "f1oo", null],
+  ["http://example.com/", "foo1", null],
+  ["http://example.com/", ":foo", "NAMESPACE_ERR"],
+  ["http://example.com/", "f:oo", null],
+  ["http://example.com/", "f:o:o", "NAMESPACE_ERR"],
+  ["http://example.com/", "foo:", "NAMESPACE_ERR"],
+  ["http://example.com/", "f::oo", "NAMESPACE_ERR"],
+  ["http://example.com/", "a:0", "NAMESPACE_ERR"],
+  ["http://example.com/", "0:a", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "a:_", null],
+  ["http://example.com/", "a:\u0BC6", "NAMESPACE_ERR"],
+  ["http://example.com/", "\u0BC6:a", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "a:a\u0BC6", null],
+  ["http://example.com/", "a\u0BC6:a", null],
+  ["http://example.com/", "xml:test", "NAMESPACE_ERR"],
+  ["http://example.com/", "xmlns:test", "NAMESPACE_ERR"],
+  ["http://example.com/", "test:xmlns", null],
+  ["http://example.com/", "xmlns", "NAMESPACE_ERR"],
+  ["http://example.com/", "_:_", null],
+  ["http://example.com/", "_:h0", null],
+  ["http://example.com/", "_:test", null],
+  ["http://example.com/", "l_:_", null],
+  ["http://example.com/", "ns:_0", null],
+  ["http://example.com/", "ns:a0", null],
+  ["http://example.com/", "ns0:test", null],
+  ["http://example.com/", "a.b:c", null],
+  ["http://example.com/", "a-b:c", null],
+  ["http://example.com/", "xml", null],
+  ["http://example.com/", "xmlns", "NAMESPACE_ERR"],
+  ["http://example.com/", "XMLNS", null],
+  ["http://example.com/", "xmlfoo", null],
+  ["http://example.com/", "xml:foo", "NAMESPACE_ERR"],
+  ["http://example.com/", "XML:foo", null],
+  ["http://example.com/", "xmlns:foo", "NAMESPACE_ERR"],
+  ["http://example.com/", "XMLNS:foo", null],
+  ["http://example.com/", "xmlfoo:bar", null],
+  ["http://example.com/", "prefix::local", "NAMESPACE_ERR"],
+  ["http://example.com/", "namespaceURI:{", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:}", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:~", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:'", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:!", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:@", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:#", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:$", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:%", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:^", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:&", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:*", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:(", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:)", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:+", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:=", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:[", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:]", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:\\", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:/", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:;", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:`", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:<", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:>", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:,", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:a ", "INVALID_CHARACTER_ERR"],
+  ["http://example.com/", "namespaceURI:\"", "INVALID_CHARACTER_ERR"],
+  ["/", "foo", null],
+  ["/", "1foo", "INVALID_CHARACTER_ERR"],
+  ["/", "f1oo", null],
+  ["/", "foo1", null],
+  ["/", ":foo", "NAMESPACE_ERR"],
+  ["/", "f:oo", null],
+  ["/", "foo:", "NAMESPACE_ERR"],
+  ["/", "xml", null],
+  ["/", "xmlns", "NAMESPACE_ERR"],
+  ["/", "xmlfoo", null],
+  ["/", "xml:foo", "NAMESPACE_ERR"],
+  ["/", "xmlns:foo", "NAMESPACE_ERR"],
+  ["/", "xmlfoo:bar", null],
+  ["http://www.w3.org/XML/1998/namespace", "foo", null],
+  ["http://www.w3.org/XML/1998/namespace", "1foo", "INVALID_CHARACTER_ERR"],
+  ["http://www.w3.org/XML/1998/namespace", "f1oo", null],
+  ["http://www.w3.org/XML/1998/namespace", "foo1", null],
+  ["http://www.w3.org/XML/1998/namespace", ":foo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/XML/1998/namespace", "f:oo", null],
+  ["http://www.w3.org/XML/1998/namespace", "foo:", "NAMESPACE_ERR"],
+  ["http://www.w3.org/XML/1998/namespace", "xml", null],
+  ["http://www.w3.org/XML/1998/namespace", "xmlns", "NAMESPACE_ERR"],
+  ["http://www.w3.org/XML/1998/namespace", "xmlfoo", null],
+  ["http://www.w3.org/XML/1998/namespace", "xml:foo", null],
+  ["http://www.w3.org/XML/1998/namespace", "xmlns:foo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/XML/1998/namespace", "xmlfoo:bar", null],
+  ["http://www.w3.org/XML/1998/namespaces", "xml:foo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/xml/1998/namespace", "xml:foo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "foo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "1foo", "INVALID_CHARACTER_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "f1oo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "foo1", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", ":foo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "f:oo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "foo:", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "xml", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "xmlns", null],
+  ["http://www.w3.org/2000/xmlns/", "xmlfoo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "xml:foo", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "xmlns:foo", null],
+  ["http://www.w3.org/2000/xmlns/", "xmlfoo:bar", "NAMESPACE_ERR"],
+  ["http://www.w3.org/2000/xmlns/", "foo:xmlns", "NAMESPACE_ERR"],
+  ["foo:", "foo", null],
+  ["foo:", "1foo", "INVALID_CHARACTER_ERR"],
+  ["foo:", "f1oo", null],
+  ["foo:", "foo1", null],
+  ["foo:", ":foo", "NAMESPACE_ERR"],
+  ["foo:", "f:oo", null],
+  ["foo:", "foo:", "NAMESPACE_ERR"],
+  ["foo:", "xml", null],
+  ["foo:", "xmlns", "NAMESPACE_ERR"],
+  ["foo:", "xmlfoo", null],
+  ["foo:", "xml:foo", "NAMESPACE_ERR"],
+  ["foo:", "xmlns:foo", "NAMESPACE_ERR"],
+  ["foo:", "xmlfoo:bar", null],
+]
diff --git a/testing/web-platform/tests/dom/nodes/Document-createEvent.html b/testing/web-platform/tests/dom/nodes/Document-createEvent.html
new file mode 100644
index 000000000..29a2c010e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createEvent.html
@@ -0,0 +1,154 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.createEvent</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createevent">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-createEvent.js"></script>
+<div id="log"></div>
+<script>
+function testAlias(arg, iface) {
+  var ev;
+  test(function() {
+    ev = document.createEvent(arg);
+    assert_true(ev instanceof window[iface]);
+    assert_true(ev instanceof Event);
+  }, arg + " should be an alias for " + iface + ".");
+  test(function() {
+    assert_equals(ev.type, "",
+                  "type should be initialized to the empty string");
+    assert_equals(ev.target, null,
+                  "target should be initialized to null");
+    assert_equals(ev.currentTarget, null,
+                  "currentTarget should be initialized to null");
+    assert_equals(ev.eventPhase, 0,
+                  "eventPhase should be initialized to NONE (0)");
+    assert_equals(ev.bubbles, false,
+                  "bubbles should be initialized to false");
+    assert_equals(ev.cancelable, false,
+                  "cancelable should be initialized to false");
+    assert_equals(ev.defaultPrevented, false,
+                  "defaultPrevented should be initialized to false");
+    assert_equals(ev.isTrusted, false,
+                  "isTrusted should be initialized to false");
+  }, "createEvent('" + arg + "') should be initialized correctly.");
+}
+for (var alias in aliases) {
+  var iface = aliases[alias];
+  testAlias(alias, iface);
+  testAlias(alias.toLowerCase(), iface);
+  testAlias(alias.toUpperCase(), iface);
+
+  if (alias[alias.length - 1] != "s") {
+    var plural = alias + "s";
+    if (!(plural in aliases)) {
+      test(function () {
+        assert_throws("NOT_SUPPORTED_ERR", function () {
+          var evt = document.createEvent(plural);
+        });
+      }, 'Should throw NOT_SUPPORTED_ERR for pluralized legacy event interface "' + plural + '"');
+    }
+  }
+}
+
+test(function() {
+  assert_throws("NOT_SUPPORTED_ERR", function() {
+    var evt = document.createEvent("foo");
+  });
+  assert_throws("NOT_SUPPORTED_ERR", function() {
+    // 'LATIN CAPITAL LETTER I WITH DOT ABOVE' (U+0130)
+    var evt = document.createEvent("U\u0130Event");
+  });
+  assert_throws("NOT_SUPPORTED_ERR", function() {
+    // 'LATIN SMALL LETTER DOTLESS I' (U+0131)
+    var evt = document.createEvent("U\u0131Event");
+  });
+}, "Should throw NOT_SUPPORTED_ERR for unrecognized arguments");
+
+/*
+ * The following are event interfaces which do actually exist, but must still
+ * throw since they're absent from the table in the spec for
+ * document.createEvent().  This list is not exhaustive, but includes all
+ * interfaces that it is known some UA does or did not throw for.
+ */
+var someNonCreateableEvents = [
+  "AnimationPlaybackEvent",
+  "AnimationPlayerEvent",
+  "ApplicationCacheErrorEvent",
+  "AudioProcessingEvent",
+  "AutocompleteErrorEvent",
+  "BeforeInstallPromptEvent",
+  "BlobEvent",
+  "ClipboardEvent",
+  "CommandEvent",
+  "DataContainerEvent",
+  "DeviceLightEvent",
+  "ExtendableEvent",
+  "ExtendableMessageEvent",
+  "FetchEvent",
+  "FontFaceSetLoadEvent",
+  "GamepadEvent",
+  "GeofencingEvent",
+  "InstallEvent",
+  "KeyEvent",
+  "MIDIConnectionEvent",
+  "MIDIMessageEvent",
+  "MediaEncryptedEvent",
+  "MediaKeyEvent",
+  "MediaKeyMessageEvent",
+  "MediaQueryListEvent",
+  "MediaStreamEvent",
+  "MediaStreamTrackEvent",
+  "MouseScrollEvent",
+  "MutationEvent",
+  "NotificationEvent",
+  "NotifyPaintEvent",
+  "OfflineAudioCompletionEvent",
+  "OrientationEvent",
+  "PageTransition", // Yes, with no "Event"
+  "PointerEvent",
+  "PopUpEvent",
+  "PresentationConnectionAvailableEvent",
+  "PresentationConnectionCloseEvent",
+  "PromiseRejectionEvent",
+  "PushEvent",
+  "RTCDTMFToneChangeEvent",
+  "RTCDataChannelEvent",
+  "RTCIceCandidateEvent",
+  "RelatedEvent",
+  "ResourceProgressEvent",
+  "SVGEvent",
+  "ScrollAreaEvent",
+  "SecurityPolicyViolationEvent",
+  "ServicePortConnectEvent",
+  "ServiceWorkerMessageEvent",
+  "SimpleGestureEvent",
+  "SpeechRecognitionError",
+  "SpeechRecognitionEvent",
+  "SpeechSynthesisEvent",
+  "SyncEvent",
+  "TimeEvent",
+  "WebKitAnimationEvent",
+  "WebKitTransitionEvent",
+  "XULCommandEvent",
+];
+someNonCreateableEvents.forEach(function (eventInterface) {
+  // SVGEvents is allowed, but not SVGEvent.  Make sure we only test if it's
+  // not whitelisted.
+  if (!(eventInterface in aliases)) {
+    test(function () {
+      assert_throws("NOT_SUPPORTED_ERR", function () {
+        var evt = document.createEvent(eventInterface);
+      });
+    }, 'Should throw NOT_SUPPORTED_ERR for non-legacy event interface "' + eventInterface + '"');
+  }
+
+  if (!(eventInterface + "s" in aliases)) {
+    test(function () {
+      assert_throws("NOT_SUPPORTED_ERR", function () {
+        var evt = document.createEvent(eventInterface + "s");
+      });
+    }, 'Should throw NOT_SUPPORTED_ERR for pluralized non-legacy event interface "' + eventInterface + 's"');
+  }
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createEvent.js b/testing/web-platform/tests/dom/nodes/Document-createEvent.js
new file mode 100644
index 000000000..e55487ada
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createEvent.js
@@ -0,0 +1,36 @@
+var aliases = {
+  "AnimationEvent": "AnimationEvent",
+  "BeforeUnloadEvent": "BeforeUnloadEvent",
+  "CloseEvent": "CloseEvent",
+  "CompositionEvent": "CompositionEvent",
+  "CustomEvent": "CustomEvent",
+  "DeviceMotionEvent": "DeviceMotionEvent",
+  "DeviceOrientationEvent": "DeviceOrientationEvent",
+  "DragEvent": "DragEvent",
+  "ErrorEvent": "ErrorEvent",
+  "Event": "Event",
+  "Events": "Event",
+  "FocusEvent": "FocusEvent",
+  "HashChangeEvent": "HashChangeEvent",
+  "HTMLEvents": "Event",
+  "IDBVersionChangeEvent": "IDBVersionChangeEvent",
+  "KeyboardEvent": "KeyboardEvent",
+  "MessageEvent": "MessageEvent",
+  "MouseEvent": "MouseEvent",
+  "MouseEvents": "MouseEvent",
+  "PageTransitionEvent": "PageTransitionEvent",
+  "PopStateEvent": "PopStateEvent",
+  "ProgressEvent": "ProgressEvent",
+  "StorageEvent": "StorageEvent",
+  "SVGEvents": "Event",
+  "SVGZoomEvent": "SVGZoomEvent",
+  "SVGZoomEvents": "SVGZoomEvent",
+  "TextEvent": "CompositionEvent",
+  "TouchEvent": "TouchEvent",
+  "TrackEvent": "TrackEvent",
+  "TransitionEvent": "TransitionEvent",
+  "UIEvent": "UIEvent",
+  "UIEvents": "UIEvent",
+  "WebGLContextEvent": "WebGLContextEvent",
+  "WheelEvent": "WheelEvent",
+};
diff --git a/testing/web-platform/tests/dom/nodes/Document-createProcessingInstruction-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Document-createProcessingInstruction-xhtml.xhtml
new file mode 100644
index 000000000..d06f70fdc
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createProcessingInstruction-xhtml.xhtml
@@ -0,0 +1,15 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Document.createProcessingInstruction in XML documents</title>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-document-createprocessinginstruction"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-processinginstruction-target"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-characterdata-data"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-node-ownerdocument"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"/>
+<script src="Document-createProcessingInstruction.js"/>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createProcessingInstruction.html b/testing/web-platform/tests/dom/nodes/Document-createProcessingInstruction.html
new file mode 100644
index 000000000..c57a792fa
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createProcessingInstruction.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.createProcessingInstruction in HTML documents</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createprocessinginstruction">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-processinginstruction-target">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-ownerdocument">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script src="Document-createProcessingInstruction.js"></script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createProcessingInstruction.js b/testing/web-platform/tests/dom/nodes/Document-createProcessingInstruction.js
new file mode 100644
index 000000000..114ac35d9
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createProcessingInstruction.js
@@ -0,0 +1,39 @@
+test(function() {
+  var invalid = [
+        ["A", "?>"],
+        ["\u00B7A", "x"],
+        ["\u00D7A", "x"],
+        ["A\u00D7", "x"],
+        ["\\A", "x"],
+        ["\f", "x"],
+        [0, "x"],
+        ["0", "x"]
+      ],
+      valid = [
+        ["xml:fail", "x"],
+        ["A\u00B7A", "x"],
+        ["a0", "x"]
+      ]
+
+  for (var i = 0, il = invalid.length; i < il; i++) {
+    test(function() {
+      assert_throws("INVALID_CHARACTER_ERR", function() {
+        document.createProcessingInstruction(invalid[i][0], invalid[i][1])
+      })
+    }, "Should throw an INVALID_CHARACTER_ERR for target " +
+       format_value(invalid[i][0]) + " and data " +
+       format_value(invalid[i][1]) + ".")
+  }
+  for (var i = 0, il = valid.length; i < il; ++i) {
+    test(function() {
+      var pi = document.createProcessingInstruction(valid[i][0], valid[i][1]);
+      assert_equals(pi.target, valid[i][0]);
+      assert_equals(pi.data, valid[i][1]);
+      assert_equals(pi.ownerDocument, document);
+      assert_true(pi instanceof ProcessingInstruction);
+      assert_true(pi instanceof Node);
+    }, "Should get a ProcessingInstruction for target " +
+      format_value(valid[i][0]) + " and data " +
+      format_value(valid[i][1]) + ".")
+  }
+})
diff --git a/testing/web-platform/tests/dom/nodes/Document-createTextNode.html b/testing/web-platform/tests/dom/nodes/Document-createTextNode.html
new file mode 100644
index 000000000..ccc1b1b77
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createTextNode.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.createTextNode</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createtextnode">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-ownerdocument">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodevalue">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-textcontent">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-length">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodetype">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-haschildnodes">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-childnodes">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-firstchild">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-lastchild">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-createComment-createTextNode.js"></script>
+<div id="log"></div>
+<script>
+test_create("createTextNode", Text, 3, "#text");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-createTreeWalker.html b/testing/web-platform/tests/dom/nodes/Document-createTreeWalker.html
new file mode 100644
index 000000000..f8f04b068
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-createTreeWalker.html
@@ -0,0 +1,42 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Document.createTreeWalker</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id=log></div>
+<script>
+test(function() {
+  assert_throws(new TypeError(), function() {
+    document.createTreeWalker();
+  });
+}, "Required arguments to createTreeWalker should be required.");
+test(function() {
+  var tw = document.createTreeWalker(document.body);
+  assert_equals(tw.root, document.body);
+  assert_equals(tw.currentNode, document.body);
+  assert_equals(tw.whatToShow, 0xFFFFFFFF);
+  assert_equals(tw.filter, null);
+}, "Optional arguments to createTreeWalker should be optional (1 passed).");
+test(function() {
+  var tw = document.createTreeWalker(document.body, 42);
+  assert_equals(tw.root, document.body);
+  assert_equals(tw.currentNode, document.body);
+  assert_equals(tw.whatToShow, 42);
+  assert_equals(tw.filter, null);
+}, "Optional arguments to createTreeWalker should be optional (2 passed).");
+test(function() {
+  var tw = document.createTreeWalker(document.body, 42, null);
+  assert_equals(tw.root, document.body);
+  assert_equals(tw.currentNode, document.body);
+  assert_equals(tw.whatToShow, 42);
+  assert_equals(tw.filter, null);
+}, "Optional arguments to createTreeWalker should be optional (3 passed, null).");
+test(function() {
+  var fn = function() {};
+  var tw = document.createTreeWalker(document.body, 42, fn);
+  assert_equals(tw.root, document.body);
+  assert_equals(tw.currentNode, document.body);
+  assert_equals(tw.whatToShow, 42);
+  assert_equals(tw.filter, fn);
+}, "Optional arguments to createTreeWalker should be optional (3 passed, function).");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-doctype.html b/testing/web-platform/tests/dom/nodes/Document-doctype.html
new file mode 100644
index 000000000..75bfd8506
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-doctype.html
@@ -0,0 +1,21 @@
+<!-- comment -->
+<!doctype html>
+<meta charset=utf-8>
+<title>Document.doctype</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-doctype">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  assert_true(document.doctype instanceof DocumentType,
+              "Doctype should be a DocumentType");
+  assert_equals(document.doctype, document.childNodes[1]);
+}, "Window document with doctype");
+
+test(function() {
+  var newdoc = new Document();
+  newdoc.appendChild(newdoc.createElement("html"));
+  assert_equals(newdoc.doctype, null);
+}, "new Document()");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-getElementById.html b/testing/web-platform/tests/dom/nodes/Document-getElementById.html
new file mode 100644
index 000000000..1dec4c085
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-getElementById.html
@@ -0,0 +1,350 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.getElementById</title>
+<link rel="author" title="Tetsuharu OHZEKI" href="mailto:saneyuki.snyk@gmail.com">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-getelementbyid">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+  <div id="log"></div>
+
+  <!-- test 0 -->
+  <div id=""></div>
+
+  <!-- test 1 -->
+  <div id="test1"></div>
+
+  <!-- test 5 -->
+  <div id="test5" data-name="1st">
+    <p id="test5" data-name="2nd">P</p>
+    <input id="test5" type="submit" value="Submit" data-name="3rd">
+  </div>
+
+  <!-- test 15 -->
+  <div id="outer">
+    <div id="middle">
+      <div id="inner"></div>
+    </div>
+  </div>
+
+<script>
+  var gBody = document.getElementsByTagName("body")[0];
+
+  test(function() {
+    assert_equals(document.getElementById(""), null);
+  }, "Calling document.getElementById with an empty string argument.");
+
+  test(function() {
+    var element = document.createElement("div");
+    element.setAttribute("id", "null");
+    document.body.appendChild(element);
+    this.add_cleanup(function() { document.body.removeChild(element) });
+    assert_equals(document.getElementById(null), element);
+  }, "Calling document.getElementById with a null argument.");
+
+  test(function() {
+    var element = document.createElement("div");
+    element.setAttribute("id", "undefined");
+    document.body.appendChild(element);
+    this.add_cleanup(function() { document.body.removeChild(element) });
+    assert_equals(document.getElementById(undefined), element);
+  }, "Calling document.getElementById with an undefined argument.");
+
+
+  test(function() {
+    var bar = document.getElementById("test1");
+    assert_not_equals(bar, null, "should not be null");
+    assert_equals(bar.tagName, "DIV", "should have expected tag name.");
+    assert_true(bar instanceof HTMLDivElement, "should be a valid Element instance");
+  }, "on static page");
+
+
+  test(function() {
+    var TEST_ID = "test2";
+
+    var test = document.createElement("div");
+    test.setAttribute("id", TEST_ID);
+    gBody.appendChild(test);
+
+    // test: appended element
+    var result = document.getElementById(TEST_ID);
+    assert_not_equals(result, null, "should not be null.");
+    assert_equals(result.tagName, "DIV", "should have appended element's tag name");
+    assert_true(result instanceof HTMLDivElement, "should be a valid Element instance");
+
+    // test: removed element
+    gBody.removeChild(test);
+    var removed = document.getElementById(TEST_ID);
+    // `document.getElementById()` returns `null` if there is none.
+    // https://dom.spec.whatwg.org/#dom-nonelementparentnode-getelementbyid
+    assert_equals(removed, null, "should not get removed element.");
+  }, "Document.getElementById with a script-inserted element");
+
+
+  test(function() {
+    // setup fixtures.
+    var TEST_ID = "test3";
+    var test = document.createElement("div");
+    test.setAttribute("id", TEST_ID);
+    gBody.appendChild(test);
+
+    // update id
+    var UPDATED_ID = "test3-updated";
+    test.setAttribute("id", UPDATED_ID);
+    var e = document.getElementById(UPDATED_ID);
+    assert_equals(e, test, "should get the element with id.");
+
+    var old = document.getElementById(TEST_ID);
+    assert_equals(old, null, "shouldn't get the element by the old id.");
+
+    // remove id.
+    test.removeAttribute("id");
+    var e2 = document.getElementById(UPDATED_ID);
+    assert_equals(e2, null, "should return null when the passed id is none in document.");
+  }, "update `id` attribute via setAttribute/removeAttribute");
+
+
+  test(function() {
+    var TEST_ID = "test4-should-not-exist";
+
+    var e = document.createElement('div');
+    e.setAttribute("id", TEST_ID);
+
+    assert_equals(document.getElementById(TEST_ID), null, "should be null");
+    document.body.appendChild(e);
+    assert_equals(document.getElementById(TEST_ID), e, "should be the appended element");
+  }, "Ensure that the id attribute only affects elements present in a document");
+
+
+  test(function() {
+    // the method should return the 1st element.
+    var TEST_ID = "test5";
+    var target = document.getElementById(TEST_ID);
+    assert_not_equals(target, null, "should not be null");
+    assert_equals(target.getAttribute("data-name"), "1st", "should return the 1st");
+
+    // even if after the new element was appended.
+    var element4 = document.createElement("div");
+    element4.setAttribute("id", TEST_ID);
+    element4.setAttribute("data-name", "4th");
+    gBody.appendChild(element4);
+    var target2 = document.getElementById(TEST_ID);
+    assert_not_equals(target2, null, "should not be null");
+    assert_equals(target2.getAttribute("data-name"), "1st", "should be the 1st");
+
+    // should return the next element after removed the subtree including the 1st element.
+    target2.parentNode.removeChild(target2);
+    var target3 = document.getElementById(TEST_ID);
+    assert_not_equals(target3, null, "should not be null");
+    assert_equals(target3.getAttribute("data-name"), "4th", "should be the 4th");
+  }, "in tree order, within the context object's tree");
+
+
+  test(function() {
+    var TEST_ID = "test6";
+    var s = document.createElement("div");
+    s.setAttribute("id", TEST_ID);
+    // append to Element, not Document.
+    document.createElement("div").appendChild(s);
+
+    assert_equals(document.getElementById(TEST_ID), null, "should be null");
+  }, "Modern browsers optimize this method with using internal id cache. " +
+     "This test checks that their optimization should effect only append to `Document`, not append to `Node`.");
+
+
+  test(function() {
+    var TEST_ID = "test7"
+    var element = document.createElement("div");
+    element.setAttribute("id", TEST_ID);
+    gBody.appendChild(element);
+
+    var target = document.getElementById(TEST_ID);
+    assert_equals(target, element, "should return the element before changing the value");
+
+    element.attributes[0].value = TEST_ID + "-updated";
+    var target2 = document.getElementById(TEST_ID);
+    assert_equals(target2, null, "should return null after updated id via Attr.value");
+    var target3 = document.getElementById(TEST_ID + "-updated");
+    assert_equals(target3, element, "should be equal to the updated element.");
+  }, "changing attribute's value via `Attr` gotten from `Element.attribute`.");
+
+
+  test(function() {
+    var TEST_ID = "test8";
+
+    // setup fixture
+    var element = document.createElement("div");
+    element.setAttribute("id", TEST_ID + "-fixture");
+    gBody.appendChild(element);
+
+    // add id-ed element with using innerHTML
+    element.innerHTML = "<div id='"+ TEST_ID +"'></div>";
+    var test = document.getElementById(TEST_ID);
+    assert_equals(test, element.firstChild, "should not be null");
+    assert_equals(test.tagName, "DIV", "should have expected tag name.");
+    assert_true(test instanceof HTMLDivElement, "should be a valid Element instance");
+  }, "add id attribute via innerHTML");
+
+
+  test(function() {
+    var TEST_ID = "test9";
+
+    // add fixture
+    var fixture = document.createElement("div");
+    fixture.setAttribute("id", TEST_ID + "-fixture");
+    gBody.appendChild(fixture);
+
+    var element = document.createElement("div");
+    element.setAttribute("id", TEST_ID);
+    fixture.appendChild(element);
+
+    // check 'getElementById' should get the 'element'
+    assert_equals(document.getElementById(TEST_ID), element, "should not be null");
+
+    // remove id-ed element with using innerHTML (clear 'element')
+    fixture.innerHTML = "";
+    var test = document.getElementById(TEST_ID);
+    assert_equals(test, null, "should be null.");
+  }, "remove id attribute via innerHTML");
+
+
+  test(function() {
+    var TEST_ID = "test10";
+
+    // setup fixture
+    var element = document.createElement("div");
+    element.setAttribute("id", TEST_ID + "-fixture");
+    gBody.appendChild(element);
+
+    // add id-ed element with using outerHTML
+    element.outerHTML = "<div id='"+ TEST_ID +"'></div>";
+    var test = document.getElementById(TEST_ID);
+    assert_not_equals(test, null, "should not be null");
+    assert_equals(test.tagName, "DIV", "should have expected tag name.");
+    assert_true(test instanceof HTMLDivElement,"should be a valid Element instance");
+  }, "add id attribute via outerHTML");
+
+
+  test(function() {
+    var TEST_ID = "test11";
+
+    var element = document.createElement("div");
+    element.setAttribute("id", TEST_ID);
+    gBody.appendChild(element);
+
+    var test = document.getElementById(TEST_ID);
+    assert_equals(test, element, "should be equal to the appended element.");
+
+    // remove id-ed element with using outerHTML
+    element.outerHTML = "<div></div>";
+    var test = document.getElementById(TEST_ID);
+    assert_equals(test, null, "should be null.");
+  }, "remove id attribute via outerHTML");
+
+
+  test(function() {
+    // setup fixtures.
+    var TEST_ID = "test12";
+    var test = document.createElement("div");
+    test.id = TEST_ID;
+    gBody.appendChild(test);
+
+    // update id
+    var UPDATED_ID = TEST_ID + "-updated";
+    test.id =  UPDATED_ID;
+    var e = document.getElementById(UPDATED_ID);
+    assert_equals(e, test, "should get the element with id.");
+
+    var old = document.getElementById(TEST_ID);
+    assert_equals(old, null, "shouldn't get the element by the old id.");
+
+    // remove id.
+    test.id = "";
+    var e2 = document.getElementById(UPDATED_ID);
+    assert_equals(e2, null, "should return null when the passed id is none in document.");
+  }, "update `id` attribute via element.id");
+
+
+  test(function() {
+    var TEST_ID = "test13";
+
+    var create_same_id_element = function (order) {
+      var element = document.createElement("div");
+      element.setAttribute("id", TEST_ID);
+      element.setAttribute("data-order", order);// for debug
+      return element;
+    };
+
+    // create fixture
+    var container = document.createElement("div");
+    container.setAttribute("id", TEST_ID + "-fixture");
+    gBody.appendChild(container);
+
+    var element1 = create_same_id_element("1");
+    var element2 = create_same_id_element("2");
+    var element3 = create_same_id_element("3");
+    var element4 = create_same_id_element("4");
+
+    // append element: 2 -> 4 -> 3 -> 1
+    container.appendChild(element2);
+    container.appendChild(element4);
+    container.insertBefore(element3, element4);
+    container.insertBefore(element1, element2);
+
+
+    var test = document.getElementById(TEST_ID);
+    assert_equals(test, element1, "should return 1st element");
+    container.removeChild(element1);
+
+    test = document.getElementById(TEST_ID);
+    assert_equals(test, element2, "should return 2nd element");
+    container.removeChild(element2);
+
+    test = document.getElementById(TEST_ID);
+    assert_equals(test, element3, "should return 3rd element");
+    container.removeChild(element3);
+
+    test = document.getElementById(TEST_ID);
+    assert_equals(test, element4, "should return 4th element");
+    container.removeChild(element4);
+
+
+  }, "where insertion order and tree order don't match");
+
+  test(function() {
+    var TEST_ID = "test14";
+    var a = document.createElement("a");
+    var b = document.createElement("b");
+    a.appendChild(b);
+    b.id = TEST_ID;
+    assert_equals(document.getElementById(TEST_ID), null);
+
+    gBody.appendChild(a);
+    assert_equals(document.getElementById(TEST_ID), b);
+  }, "Inserting an id by inserting its parent node");
+
+  test(function () {
+    var TEST_ID = "test15"
+    var outer = document.getElementById("outer");
+    var middle = document.getElementById("middle");
+    var inner = document.getElementById("inner");
+    outer.removeChild(middle);
+
+    var new_el = document.createElement("h1");
+    new_el.id = "heading";
+    inner.appendChild(new_el);
+    // the new element is not part of the document since
+    // "middle" element was removed previously
+    assert_equals(document.getElementById("heading"), null);
+  }, "Document.getElementById must not return nodes not present in document");
+
+  // TODO:
+  // id attribute in a namespace
+
+
+  // TODO:
+  // SVG + MathML elements with id attributes
+
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-getElementsByTagName-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Document-getElementsByTagName-xhtml.xhtml
new file mode 100644
index 000000000..309a29ae7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-getElementsByTagName-xhtml.xhtml
@@ -0,0 +1,104 @@
+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Document.getElementsByTagName</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"></div>
+<pre id="x"></pre>
+<script>
+test(function() {
+  var t = document.body.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "I"))
+  this.add_cleanup(function() {document.body.removeChild(t)})
+  assert_equals(t.localName, "I")
+  assert_equals(t.tagName, "I")
+  assert_array_equals(document.getElementsByTagName("I"), [t])
+  assert_array_equals(document.getElementsByTagName("i"), [])
+  assert_array_equals(document.body.getElementsByTagName("I"), [t])
+  assert_array_equals(document.body.getElementsByTagName("i"), [])
+}, "HTML element with uppercase tag name matches in XHTML documents")
+
+test(function() {
+  var t = document.body.appendChild(document.createElementNS("test", "st"))
+  this.add_cleanup(function() {document.body.removeChild(t)})
+  assert_array_equals(document.getElementsByTagName("st"), [t])
+  assert_array_equals(document.getElementsByTagName("ST"), [])
+}, "Element in non-HTML namespace, no prefix, lowercase name")
+
+test(function() {
+  var t = document.body.appendChild(document.createElementNS("test", "ST"))
+  this.add_cleanup(function() {document.body.removeChild(t)})
+  assert_array_equals(document.getElementsByTagName("ST"), [t])
+  assert_array_equals(document.getElementsByTagName("st"), [])
+}, "Element in non-HTML namespace, no prefix, uppercase name")
+
+test(function() {
+  var t = document.body.appendChild(document.createElementNS("test", "te:st"))
+  this.add_cleanup(function() {document.body.removeChild(t)})
+  assert_array_equals(document.getElementsByTagName("st"), [])
+  assert_array_equals(document.getElementsByTagName("ST"), [])
+  assert_array_equals(document.getElementsByTagName("te:st"), [t])
+  assert_array_equals(document.getElementsByTagName("te:ST"), [])
+}, "Element in non-HTML namespace, prefix, lowercase name")
+
+test(function() {
+  var t = document.body.appendChild(document.createElementNS("test", "te:ST"))
+  this.add_cleanup(function() {document.body.removeChild(t)})
+  assert_array_equals(document.getElementsByTagName("ST"), [])
+  assert_array_equals(document.getElementsByTagName("st"), [])
+  assert_array_equals(document.getElementsByTagName("te:st"), [])
+  assert_array_equals(document.getElementsByTagName("te:ST"), [t])
+}, "Element in non-HTML namespace, prefix, uppercase name")
+
+test(function() {
+  var t = document.body.appendChild(document.createElement("AÇ"))
+  this.add_cleanup(function() {document.body.removeChild(t)})
+  assert_array_equals(document.getElementsByTagName("AÇ"), [t], "All uppercase input")
+  assert_array_equals(document.getElementsByTagName("aÇ"), [], "Ascii lowercase input")
+  assert_array_equals(document.getElementsByTagName("aç"), [], "All lowercase input")
+}, "Element in HTML namespace, no prefix, non-ascii characters in name")
+
+test(function() {
+  var t = document.body.appendChild(document.createElementNS("test", "AÇ"))
+  this.add_cleanup(function() {document.body.removeChild(t)})
+  assert_array_equals(document.getElementsByTagName("AÇ"), [t], "All uppercase input")
+  assert_array_equals(document.getElementsByTagName("aÇ"), [], "Ascii lowercase input")
+  assert_array_equals(document.getElementsByTagName("aç"), [], "All lowercase input")
+}, "Element in non-HTML namespace, non-ascii characters in name")
+
+test(function() {
+  var t = document.body.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "test:aÇ"))
+  this.add_cleanup(function() {document.body.removeChild(t)})
+  assert_array_equals(document.getElementsByTagName("TEST:AÇ"), [], "All uppercase input")
+  assert_array_equals(document.getElementsByTagName("test:aÇ"), [t], "Ascii lowercase input")
+  assert_array_equals(document.getElementsByTagName("test:aç"), [], "All lowercase input")
+}, "Element in HTML namespace, prefix, non-ascii characters in name")
+
+test(function() {
+  var t = document.body.appendChild(document.createElementNS("test", "TEST:AÇ"))
+  this.add_cleanup(function() {document.body.removeChild(t)})
+  assert_array_equals(document.getElementsByTagName("TEST:AÇ"), [t], "All uppercase input")
+  assert_array_equals(document.getElementsByTagName("test:aÇ"), [], "Ascii lowercase input")
+  assert_array_equals(document.getElementsByTagName("test:aç"), [], "All lowercase input")
+}, "Element in non-HTML namespace, prefix, non-ascii characters in name")
+
+test(function() {
+  var actual = document.getElementsByTagName("*");
+  var expected = [];
+  var get_elements = function(node) {
+    for (var i = 0; i &lt; node.childNodes.length; i++) {
+      var child = node.childNodes[i];
+      if (child.nodeType === child.ELEMENT_NODE) {
+        expected.push(child);
+        get_elements(child);
+      }
+    }
+  }
+  get_elements(document);
+  assert_array_equals(actual, expected);
+}, "getElementsByTagName('*')")
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Document-getElementsByTagName.html b/testing/web-platform/tests/dom/nodes/Document-getElementsByTagName.html
new file mode 100644
index 000000000..00e3435c4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-getElementsByTagName.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.getElementsByTagName</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-getelementsbytagname">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-Element-getElementsByTagName.js"></script>
+<div id="log"></div>
+<script>
+test_getElementsByTagName(document, document.body);
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-getElementsByTagNameNS.html b/testing/web-platform/tests/dom/nodes/Document-getElementsByTagNameNS.html
new file mode 100644
index 000000000..063dc9821
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-getElementsByTagNameNS.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.getElementsByTagNameNS</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-getelementsbytagnamens">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-Element-getElementsByTagNameNS.js"></script>
+<div id="log"></div>
+<script>
+test_getElementsByTagNameNS(document, document.body);
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-implementation.html b/testing/web-platform/tests/dom/nodes/Document-implementation.html
new file mode 100644
index 000000000..aed525965
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-implementation.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.implementation</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-implementation">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var implementation = document.implementation;
+  assert_true(implementation instanceof DOMImplementation,
+              "implementation should implement DOMImplementation");
+  assert_equals(document.implementation, implementation);
+}, "Getting implementation off the same document");
+
+test(function() {
+  var doc = document.implementation.createHTMLDocument();
+  assert_not_equals(document.implementation, doc.implementation);
+}, "Getting implementation off different documents");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Document-importNode.html b/testing/web-platform/tests/dom/nodes/Document-importNode.html
new file mode 100644
index 000000000..32e2f3169
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Document-importNode.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.importNode</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-importnode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var doc = document.implementation.createHTMLDocument("Title");
+  var div = doc.body.appendChild(doc.createElement("div"));
+  div.appendChild(doc.createElement("span"));
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  var newDiv = document.importNode(div);
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  assert_equals(newDiv.ownerDocument, document);
+  assert_equals(newDiv.firstChild, null);
+}, "No 'deep' argument.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("Title");
+  var div = doc.body.appendChild(doc.createElement("div"));
+  div.appendChild(doc.createElement("span"));
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  var newDiv = document.importNode(div, undefined);
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  assert_equals(newDiv.ownerDocument, document);
+  assert_equals(newDiv.firstChild, null);
+}, "Undefined 'deep' argument.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("Title");
+  var div = doc.body.appendChild(doc.createElement("div"));
+  div.appendChild(doc.createElement("span"));
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  var newDiv = document.importNode(div, true);
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  assert_equals(newDiv.ownerDocument, document);
+  assert_equals(newDiv.firstChild.ownerDocument, document);
+}, "True 'deep' argument.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("Title");
+  var div = doc.body.appendChild(doc.createElement("div"));
+  div.appendChild(doc.createElement("span"));
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  var newDiv = document.importNode(div, false);
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  assert_equals(newDiv.ownerDocument, document);
+  assert_equals(newDiv.firstChild, null);
+}, "False 'deep' argument.")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/DocumentType-literal-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/DocumentType-literal-xhtml.xhtml
new file mode 100644
index 000000000..2b6965c14
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/DocumentType-literal-xhtml.xhtml
@@ -0,0 +1,23 @@
+<!DOCTYPE html PUBLIC "STAFF" "staffNS.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>DocumentType literals</title>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-documenttype-name"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-documenttype-publicid"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-documenttype-systemid"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"/>
+<script>
+test(function() {
+  var doctype = document.firstChild;
+  assert_true(doctype instanceof DocumentType)
+  assert_equals(doctype.name, "html")
+  assert_equals(doctype.publicId, 'STAFF')
+  assert_equals(doctype.systemId, 'staffNS.dtd')
+})
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/DocumentType-literal.html b/testing/web-platform/tests/dom/nodes/DocumentType-literal.html
new file mode 100644
index 000000000..a755c397b
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/DocumentType-literal.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html PUBLIC "STAFF" "staffNS.dtd">
+<title>DocumentType literals</title>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-documenttype-name">
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-documenttype-publicid">
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-documenttype-systemid">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var doctype = document.firstChild;
+  assert_true(doctype instanceof DocumentType)
+  assert_equals(doctype.name, "html")
+  assert_equals(doctype.publicId, 'STAFF')
+  assert_equals(doctype.systemId, 'staffNS.dtd')
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/DocumentType-remove.html b/testing/web-platform/tests/dom/nodes/DocumentType-remove.html
new file mode 100644
index 000000000..9e18d3511
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/DocumentType-remove.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>DocumentType.remove</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-childnode-remove">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="ChildNode-remove.js"></script>
+<div id=log></div>
+<script>
+var node, parentNode;
+setup(function() {
+  node = document.implementation.createDocumentType("html", "", "");
+  parentNode = document.implementation.createDocument(null, "", null);
+});
+testRemove(node, parentNode, "doctype");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElement-null-svg.svg b/testing/web-platform/tests/dom/nodes/Element-childElement-null-svg.svg
new file mode 100644
index 000000000..388482874
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElement-null-svg.svg
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>Null test</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of firstElementChild and lastChildElement returning null</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle" font-weight="bold">Test</text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  assert_equals(parentEl.firstElementChild, null)
+  assert_equals(parentEl.lastElementChild, null)
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElement-null-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-childElement-null-xhtml.xhtml
new file mode 100644
index 000000000..daedab6d9
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElement-null-xhtml.xhtml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Null Test</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of firstElementChild and lastChildElement returning null</h1>
+<div id="log"></div>
+<p id="parentEl" style="font-weight:bold;">Test.</p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  assert_equals(parentEl.firstElementChild, null)
+  assert_equals(parentEl.lastElementChild, null)
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElement-null.html b/testing/web-platform/tests/dom/nodes/Element-childElement-null.html
new file mode 100644
index 000000000..1863a41da
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElement-null.html
@@ -0,0 +1,15 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Null test</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of firstElementChild and lastChildElement returning null</h1>
+<div id="log"></div>
+<p id="parentEl" style="font-weight:bold;">Test.</p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  assert_equals(parentEl.firstElementChild, null)
+  assert_equals(parentEl.lastElementChild, null)
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-add-svg.svg b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-add-svg.svg
new file mode 100644
index 000000000..d149f1ea3
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-add-svg.svg
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>Dynamic Adding of Elements</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of Dynamic Adding of Elements</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of this test is
+<tspan id="first_element_child" font-weight="bold">unknown.</tspan></text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var newChild = document.createElementNS("http://www.w3.org/2000/svg", "tspan");
+  parentEl.appendChild(newChild);
+  assert_equals(parentEl.childElementCount, 2)
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-add-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-add-xhtml.xhtml
new file mode 100644
index 000000000..c97ed1965
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-add-xhtml.xhtml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Dynamic Adding of Elements</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of Dynamic Adding of Elements</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is
+<span id="first_element_child" style="font-weight:bold;">logged above.</span></p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var newChild = document.createElement("span");
+  parentEl.appendChild(newChild);
+  assert_equals(parentEl.childElementCount, 2)
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-add.html b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-add.html
new file mode 100644
index 000000000..3e7490b21
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-add.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Dynamic Adding of Elements</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of Dynamic Adding of Elements</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is
+<span id="first_element_child" style="font-weight:bold;">logged above.</span></p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var newChild = document.createElement("span");
+  parentEl.appendChild(newChild);
+  assert_equals(parentEl.childElementCount, 2)
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-remove-svg.svg b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-remove-svg.svg
new file mode 100644
index 000000000..bf99de65a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-remove-svg.svg
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>Dynamic Removal of Elements</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of Dynamic Removal of Elements</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of this test is
+<tspan id="first_element_child" font-weight="bold">unknown.</tspan><tspan id="last_element_child"> </tspan></text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var lec = parentEl.lastElementChild;
+  parentEl.removeChild(lec);
+  assert_equals(parentEl.childElementCount, 1)
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-remove-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-remove-xhtml.xhtml
new file mode 100644
index 000000000..f0009b0a7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-remove-xhtml.xhtml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Dynamic Removal of Elements</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of Removal Adding of Elements</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is
+<span id="first_element_child" style="font-weight:bold;">logged above.</span><span id="last_element_child"> </span></p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var lec = parentEl.lastElementChild;
+  parentEl.removeChild(lec);
+  assert_equals(parentEl.childElementCount, 1)
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-remove.html b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-remove.html
new file mode 100644
index 000000000..3f7e7c7ea
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-dynamic-remove.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Dynamic Removal of Elements</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of Dynamic Removal of Elements</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is
+<span id="first_element_child" style="font-weight:bold;">unknown.</span><span id="last_element_child"> </span></p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var lec = parentEl.lastElementChild;
+  parentEl.removeChild(lec);
+  assert_equals(parentEl.childElementCount, 1)
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-nochild-svg.svg b/testing/web-platform/tests/dom/nodes/Element-childElementCount-nochild-svg.svg
new file mode 100644
index 000000000..8ba574360
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-nochild-svg.svg
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>childElementCount</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of childElementCount with No Child Element Nodes</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle" font-weight="bold">Test</text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  assert_equals(parentEl.childElementCount, 0)
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-nochild-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-childElementCount-nochild-xhtml.xhtml
new file mode 100644
index 000000000..f567a20c2
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-nochild-xhtml.xhtml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>childElementCount without Child Element Nodes</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of childElementCount with No Child Element Nodes</h1>
+<div id="log"></div>
+<p id="parentEl" style="font-weight:bold;">Test.</p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  assert_equals(parentEl.childElementCount, 0)
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-nochild.html b/testing/web-platform/tests/dom/nodes/Element-childElementCount-nochild.html
new file mode 100644
index 000000000..fb52fb205
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-nochild.html
@@ -0,0 +1,14 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>childElementCount without Child Element Nodes</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of childElementCount with No Child Element Nodes</h1>
+<div id="log"></div>
+<p id="parentEl" style="font-weight:bold;">Test.</p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  assert_equals(parentEl.childElementCount, 0)
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-svg.svg b/testing/web-platform/tests/dom/nodes/Element-childElementCount-svg.svg
new file mode 100644
index 000000000..ff93eff62
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-svg.svg
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>childElementCount</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of childElementCount</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of <tspan id="first_element_child"><tspan>this</tspan> <tspan>test</tspan></tspan> is
+<tspan id="middle_element_child" font-weight="bold">unknown.</tspan>
+
+
+
+<tspan id="last_element_child" style="display:none;">fnord</tspan> </text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  assert_true("childElementCount" in parentEl)
+  assert_equals(parentEl.childElementCount, 3)
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-childElementCount-xhtml.xhtml
new file mode 100644
index 000000000..6b719ff7a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount-xhtml.xhtml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>childElementCount</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of childElementCount</h1>
+<div id="log"></div>
+<p id="parentEl">The result of <span id="first_element_child"><span>this</span> <span>test</span></span> is
+<span id="middle_element_child" style="font-weight:bold;">unknown.</span>
+
+
+
+<span id="last_element_child" style="display:none;">fnord</span> </p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  assert_true("childElementCount" in parentEl)
+  assert_equals(parentEl.childElementCount, 3)
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-childElementCount.html b/testing/web-platform/tests/dom/nodes/Element-childElementCount.html
new file mode 100644
index 000000000..8cfe567f9
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-childElementCount.html
@@ -0,0 +1,20 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>childElementCount</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of childElementCount</h1>
+<div id="log"></div>
+<p id="parentEl">The result of <span id="first_element_child"><span>this</span> <span>test</span></span> is
+<span id="middle_element_child" style="font-weight:bold;">given above.</span>
+
+
+
+<span id="last_element_child" style="display:none;">fnord</span> </p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  assert_true("childElementCount" in parentEl)
+  assert_equals(parentEl.childElementCount, 3)
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-children.html b/testing/web-platform/tests/dom/nodes/Element-children.html
new file mode 100644
index 000000000..c0210f966
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-children.html
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<title>HTMLCollection edge cases</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<div id="test"><img><img id=foo><img id=foo><img name="bar"></div>
+<script>
+setup(function() {
+  // Add some non-HTML elements in there to test what happens with those.
+  var container = document.getElementById("test");
+  var child = document.createElementNS("", "img");
+  child.setAttribute("id", "baz");
+  container.appendChild(child);
+
+  child = document.createElementNS("", "img");
+  child.setAttribute("name", "qux");
+  container.appendChild(child);
+});
+
+test(function() {
+  var container = document.getElementById("test");
+  var result = container.children.item("foo");
+  assert_true(result instanceof Element, "Expected an Element.");
+  assert_false(result.hasAttribute("id"), "Expected the IDless Element.")
+})
+
+test(function() {
+  var container = document.getElementById("test");
+  var list = container.children;
+  var result = [];
+  for (var p in list) {
+    if (list.hasOwnProperty(p)) {
+      result.push(p);
+    }
+  }
+  assert_array_equals(result, ['0', '1', '2', '3', '4', '5']);
+  result = Object.getOwnPropertyNames(list);
+  assert_array_equals(result, ['0', '1', '2', '3', '4', '5', 'foo', 'bar', 'baz']);
+
+  // Mapping of exposed names to their indices in the list.
+  var exposedNames = { 'foo': 1, 'bar': 3, 'baz': 4 };
+  for (var exposedName in exposedNames) {
+    assert_true(exposedName in list);
+    assert_true(list.hasOwnProperty(exposedName));
+    assert_equals(list[exposedName], list.namedItem(exposedName));
+    assert_equals(list[exposedName], list.item(exposedNames[exposedName]));
+    assert_true(list[exposedName] instanceof Element);
+  }
+
+  var unexposedNames = ['qux'];
+  for (var unexposedName of unexposedNames) {
+    assert_false(unexposedName in list);
+    assert_false(list.hasOwnProperty(unexposedName));
+    assert_equals(list[unexposedName], undefined);
+    assert_equals(list.namedItem(unexposedName), null);
+  }
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-classlist.html b/testing/web-platform/tests/dom/nodes/Element-classlist.html
new file mode 100644
index 000000000..22b499e93
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-classlist.html
@@ -0,0 +1,407 @@
+<!doctype html>
+<html>
+  <head class="test test">
+    <title class=" ">Element.classList in case-sensitive documents</title>
+    <link rel="help" href="https://dom.spec.whatwg.org/#concept-class">
+    <script type="text/javascript" src="/resources/testharness.js"></script>
+    <script type="text/javascript" src="/resources/testharnessreport.js"></script>
+    <style type="text/css">
+.foo { font-style: italic; }
+    </style>
+    <script type="text/javascript">
+var elem = document.getElementsByTagName('title')[0], secondelem = document.getElementsByTagName('head')[0];
+test(function () {
+  assert_equals( typeof elem.classList, 'object', 'critical test; ignore any results after this' );
+}, 'Element.classList must exist as an object');
+test(function () {
+  assert_equals( typeof document.documentElement.classList, 'object' );
+}, 'Element.classList must exist as an object even if the element has no class attribute');
+test(function () {
+  assert_true( !!window.DOMTokenList );
+}, 'DOMTokenList should be exposed for prototyping');
+test(function () {
+  DOMTokenList.prototype.customProperty = true;
+  assert_true( elem.classList.customProperty );
+}, 'prototyping DOMTokenList should work');
+test(function () {
+  assert_true( elem.classList instanceof window.DOMTokenList );
+  assert_equals( elem.classList.constructor, window.DOMTokenList );
+}, 'Element.classList must implement DOMTokenList');
+test(function () {
+  assert_not_equals( getComputedStyle(elem,null).fontStyle, 'italic', 'critical test; required by the testsuite' );
+}, 'CSS .foo selectors must not match elements without any class');
+test(function () {
+  assert_equals( secondelem.classList.length, 1, 'duplicates in initial string should be removed per https://dom.spec.whatwg.org/#concept-class' );
+  assert_equals( secondelem.classList.item(0), 'test' );
+  assert_true( secondelem.classList.contains('test') );
+}, 'classList must be correct for an element that has classes');
+test(function () {
+  assert_equals( elem.classList.length, 0 );
+}, 'classList.length must be 0 for an element that has no classes');
+test(function () {
+  assert_false( elem.classList.contains('foo') );
+}, 'classList must not contain an undefined class');
+test(function () {
+  assert_equals( elem.classList.item(0), null );
+}, 'classList.item() must return null for out-of-range index');
+test(function () {
+  assert_equals( elem.classList.item(-1), null );
+}, 'classList.item() must return null for negative index');
+test(function () {
+  /* the normative part of the spec states that:
+  "unless tokens is empty, in which case there are no supported property indices"
+  ...
+  "The term[...] supported property indices [is] used as defined in the WebIDL specification."
+  WebIDL creates actual OwnProperties and then [] just acts as a normal property lookup */
+  assert_equals( elem.classList[0], undefined );
+}, 'classList[index] must be undefined for out-of-range index');
+test(function () {
+  assert_equals( elem.classList[-1], undefined );
+}, 'classList[index] must be undefined for negative index');
+test(function () {
+  assert_equals( elem.className, ' ' );
+}, 'className should contain initial markup whitespace');
+test(function () {
+  assert_equals( elem.classList + '', ' ', 'implicit' );
+  assert_equals( elem.classList.toString(), ' ', 'explicit' );
+}, 'classList should contain initial markup whitespace');
+test(function () {
+  assert_false( elem.classList.contains('') );
+}, '.contains(empty_string) must return false');
+test(function () {
+  assert_throws( 'SYNTAX_ERR', function () { elem.classList.add(''); } );
+}, '.add(empty_string) must throw a SYNTAX_ERR');
+test(function () {
+  assert_throws( 'SYNTAX_ERR', function () { elem.classList.remove(''); } );
+}, '.remove(empty_string) must throw a SYNTAX_ERR');
+test(function () {
+  assert_throws( 'SYNTAX_ERR', function () { elem.classList.toggle(''); } );
+}, '.toggle(empty_string) must throw a SYNTAX_ERR');
+test(function () {
+  assert_throws( 'SYNTAX_ERR', function () { elem.classList.replace('', 'foo'); } );
+  assert_throws( 'SYNTAX_ERR', function () { elem.classList.replace('foo', ''); } );
+  assert_throws( 'SYNTAX_ERR', function () { elem.classList.replace('', 'foo bar'); } );
+  assert_throws( 'SYNTAX_ERR', function () { elem.classList.replace('foo bar', ''); } );
+  assert_throws( 'SYNTAX_ERR', function () { elem.classList.replace('', ''); } );
+}, '.replace with empty_string must throw a SYNTAX_ERR');
+test(function () {
+  assert_false( elem.classList.contains('a b') );
+}, '.contains(string_with_spaces) must return false');
+test(function () {
+  assert_throws( 'INVALID_CHARACTER_ERR', function () { elem.classList.add('a b'); } );
+}, '.add(string_with_spaces) must throw an INVALID_CHARACTER_ERR');
+test(function () {
+  assert_throws( 'INVALID_CHARACTER_ERR', function () { elem.classList.remove('a b'); } );
+}, '.remove(string_with_spaces) must throw an INVALID_CHARACTER_ERR');
+test(function () {
+  assert_throws( 'INVALID_CHARACTER_ERR', function () { elem.classList.toggle('a b'); } );
+}, '.toggle(string_with_spaces) must throw an INVALID_CHARACTER_ERR');
+test(function () {
+  assert_throws( 'INVALID_CHARACTER_ERR', function () { elem.classList.replace('z', 'a b'); } );
+  assert_throws( 'INVALID_CHARACTER_ERR', function () { elem.classList.replace('a b', 'z'); } );
+  assert_throws( 'INVALID_CHARACTER_ERR', function () { elem.classList.replace('a b', 'b c'); } );
+}, '.replace with string_with_spaces must throw a INVALID_CHARACTER_ERR');
+test(function () {
+  var foo = document.createElement('div');
+  foo.className = 'token1 token2 token3'
+  foo.classList.replace('token1', 'token3');
+  assert_equals( foo.classList.length, 2 );
+  assert_false( foo.classList.contains('token1') );
+  assert_true( foo.classList.contains('token2') );
+  assert_true( foo.classList.contains('token3') );
+}, '.replace with an already existing token')
+elem.className = 'foo';
+test(function () {
+  assert_equals( getComputedStyle(elem,null).fontStyle, 'italic', 'critical test; required by the testsuite' );
+}, 'computed style must update when setting .className');
+test(function () {
+  assert_true( elem.classList.contains('foo') );
+}, 'classList.contains must update when .className is changed');
+test(function () {
+  assert_false( elem.classList.contains('FOO') );
+}, 'classList.contains must be case sensitive');
+test(function () {
+  assert_false( elem.classList.contains('foo.') );
+  assert_false( elem.classList.contains('foo)') );
+  assert_false( elem.classList.contains('foo\'') );
+  assert_false( elem.classList.contains('foo$') );
+  assert_false( elem.classList.contains('foo~') );
+  assert_false( elem.classList.contains('foo?') );
+  assert_false( elem.classList.contains('foo\\') );
+}, 'classList.contains must not match when punctuation characters are added');
+test(function () {
+  elem.classList.add('FOO');
+  assert_equals( getComputedStyle(elem,null).fontStyle, 'italic' );
+}, 'classList.add must not cause the CSS selector to stop matching');
+test(function () {
+  assert_true( elem.classList.contains('foo') );
+}, 'classList.add must not remove existing classes');
+test(function () {
+  assert_true( elem.classList.contains('FOO') );
+}, 'classList.contains case sensitivity must match a case-specific string');
+test(function () {
+  assert_equals( elem.classList.length, 2 );
+}, 'classList.length must correctly reflect the number of tokens');
+test(function () {
+  assert_equals( elem.classList.item(0), 'foo' );
+}, 'classList.item(0) must return the first token');
+test(function () {
+  assert_equals( elem.classList.item(1), 'FOO' );
+}, 'classList.item must return case-sensitive strings and preserve token order');
+test(function () {
+  assert_equals( elem.classList[0], 'foo' );
+}, 'classList[0] must return the first token');
+test(function () {
+  assert_equals( elem.classList[1], 'FOO' );
+}, 'classList[index] must return case-sensitive strings and preserve token order');
+test(function () {
+  /* the normative part of the spec states that:
+  "The object's supported property indices are the numbers in the range zero to the number of tokens in tokens minus one"
+  ...
+  "The term[...] supported property indices [is] used as defined in the WebIDL specification."
+  WebIDL creates actual OwnProperties and then [] just acts as a normal property lookup */
+  assert_equals( elem.classList[2], undefined );
+}, 'classList[index] must still be undefined for out-of-range index when earlier indexes exist');
+test(function () {
+  assert_equals( elem.className, 'foo FOO' );
+}, 'className must update correctly when items have been added through classList');
+test(function () {
+  assert_equals( elem.classList + '', 'foo FOO', 'implicit' );
+  assert_equals( elem.classList.toString(), 'foo FOO', 'explicit' );
+}, 'classList must stringify correctly when items have been added');
+test(function () {
+  elem.classList.add('foo');
+  assert_equals( elem.classList.length, 2 );
+  assert_equals( elem.classList + '', 'foo FOO', 'implicit' );
+  assert_equals( elem.classList.toString(), 'foo FOO', 'explicit' );
+}, 'classList.add should not add a token if it already exists');
+test(function () {
+  elem.classList.remove('bar');
+  assert_equals( elem.classList.length, 2 );
+  assert_equals( elem.classList + '', 'foo FOO', 'implicit' );
+  assert_equals( elem.classList.toString(), 'foo FOO', 'explicit' );
+}, 'classList.remove removes arguments passed, if they are present.');
+test(function () {
+  elem.classList.remove('foo');
+  assert_equals( elem.classList.length, 1 );
+  assert_equals( elem.classList + '', 'FOO', 'implicit' );
+  assert_equals( elem.classList.toString(), 'FOO', 'explicit' );
+  assert_false( elem.classList.contains('foo') );
+  assert_true( elem.classList.contains('FOO') );
+}, 'classList.remove must remove existing tokens');
+test(function () {
+  assert_not_equals( getComputedStyle(elem,null).fontStyle, 'italic' );
+}, 'classList.remove must not break case-sensitive CSS selector matching');
+test(function () {
+  secondelem.classList.remove('test');
+  assert_equals( secondelem.classList.length, 0 );
+  assert_false( secondelem.classList.contains('test') );
+}, 'classList.remove must remove duplicated tokens');
+test(function () {
+  secondelem.className = 'token1 token2 token3';
+  secondelem.classList.remove('token2');
+  assert_equals( secondelem.classList + '', 'token1 token3', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'token1 token3', 'explicit' );
+}, 'classList.remove must collapse whitespace around removed tokens');
+test(function () {
+  secondelem.className = ' token1 token2  ';
+  secondelem.classList.remove('token2');
+  assert_equals( secondelem.classList + '', 'token1', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'token1', 'explicit' );
+}, 'classList.remove must collapse whitespaces around each token');
+test(function () {
+  secondelem.className = '  token1  token2  token1  ';
+  secondelem.classList.remove('token2');
+  assert_equals( secondelem.classList + '', 'token1', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'token1', 'explicit' );
+}, 'classList.remove must collapse whitespaces around each token and remove duplicates');
+test(function () {
+  secondelem.className = '  token1  token2  token1  ';
+  secondelem.classList.remove('token1');
+  assert_equals( secondelem.classList + '', 'token2', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'token2', 'explicit' );
+}, 'classList.remove must collapse whitespace when removing duplicate tokens');
+test(function () {
+  secondelem.className = '  token1  token1  ';
+  secondelem.classList.add('token1');
+  assert_equals( secondelem.classList + '', 'token1', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'token1', 'explicit' );
+}, 'classList.add must collapse whitespaces and remove duplicates when adding a token that already exists');
+test(function () {
+  assert_true(elem.classList.toggle('foo'));
+  assert_equals( elem.classList.length, 2 );
+  assert_true( elem.classList.contains('foo') );
+  assert_true( elem.classList.contains('FOO') );
+}, 'classList.toggle must toggle tokens case-sensitively when adding');
+test(function () {
+  assert_equals( getComputedStyle(elem,null).fontStyle, 'italic' );
+}, 'classList.toggle must not break case-sensitive CSS selector matching');
+test(function () {
+  assert_false(elem.classList.toggle('foo'));
+}, 'classList.toggle must be able to remove tokens');
+test(function () {
+  //will return true if the last test incorrectly removed both
+  assert_false(elem.classList.toggle('FOO'));
+  assert_false( elem.classList.contains('foo') );
+  assert_false( elem.classList.contains('FOO') );
+}, 'classList.toggle must be case-sensitive when removing tokens');
+test(function () {
+  secondelem.className = 'foo FOO'
+  secondelem.classList.replace('bar', 'baz');
+  assert_equals( secondelem.classList.length, 2 );
+  assert_equals( secondelem.classList + '', 'foo FOO', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'foo FOO', 'explicit' );
+}, 'classList.replace replaces arguments passed, if they are present.');
+test(function () {
+  secondelem.classList.replace('foo', 'bar');
+  assert_equals( secondelem.classList.length, 2 );
+  assert_equals( secondelem.classList + '', 'bar FOO', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'bar FOO', 'explicit' );
+  assert_false( secondelem.classList.contains('foo') );
+  assert_true( secondelem.classList.contains('bar') );
+  assert_true( secondelem.classList.contains('FOO') );
+}, 'classList.replace must replace existing tokens');
+test(function () {
+  assert_not_equals( getComputedStyle(secondelem,null).fontStyle, 'italic' );
+}, 'classList.replace must not break case-sensitive CSS selector matching');
+test(function () {
+  secondelem.className = 'token1 token2 token1'
+  secondelem.classList.replace('token1', 'token3');
+  assert_equals( secondelem.classList.length, 2 );
+  assert_false( secondelem.classList.contains('token1') );
+  assert_true( secondelem.classList.contains('token2') );
+  assert_true( secondelem.classList.contains('token3') );
+}, 'classList.replace must replace duplicated tokens');
+test(function () {
+  secondelem.className = 'token1  token2  token3';
+  secondelem.classList.replace('token2', 'token4');
+  assert_equals( secondelem.classList + '', 'token1 token4 token3', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'token1 token4 token3', 'explicit' );
+}, 'classList.replace must collapse whitespace around replaced tokens');
+test(function () {
+  secondelem.className = ' token1 token2  ';
+  secondelem.classList.replace('token2', 'token3');
+  assert_equals( secondelem.classList.length, 2 );
+  assert_equals( secondelem.classList + '', 'token1 token3', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'token1 token3', 'explicit' );
+}, 'classList.replace must collapse whitespaces around each token');
+test(function () {
+  secondelem.className = '  token1  token2  token1  ';
+  secondelem.classList.replace('token2', 'token3');
+  assert_equals( secondelem.classList + '', 'token1 token3', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'token1 token3', 'explicit' );
+}, 'classList.replace must collapse whitespaces around each token and remove duplicates');
+test(function () {
+  secondelem.className = '  token1  token2  token1  ';
+  secondelem.classList.replace('token1', 'token3');
+  assert_equals( secondelem.classList + '', 'token3 token2', 'implicit' );
+  assert_equals( secondelem.classList.toString(), 'token3 token2', 'explicit' );
+}, 'classList.replace must collapse whitespace when replacing duplicate tokens');
+test(function () {
+  assert_not_equals( getComputedStyle(elem,null).fontStyle, 'italic' );
+}, 'CSS class selectors must stop matching when all classes have been removed');
+test(function () {
+  assert_equals( elem.className, '' );
+}, 'className must be empty when all classes have been removed');
+test(function () {
+  assert_equals( elem.classList + '', '', 'implicit' );
+  assert_equals( elem.classList.toString(), '', 'explicit' );
+}, 'classList must stringify to an empty string when all classes have been removed');
+test(function () {
+  assert_equals( elem.classList.item(0), null );
+}, 'classList.item(0) must return null when all classes have been removed');
+test(function () {
+  /* the normative part of the spec states that:
+  "unless the length is zero, in which case there are no supported property indices"
+  ...
+  "The term[...] supported property indices [is] used as defined in the WebIDL specification."
+  WebIDL creates actual OwnProperties and then [] just acts as a normal property lookup */
+  assert_equals( elem.classList[0], undefined );
+}, 'classList[0] must be undefined when all classes have been removed');
+test(function () {
+  var foo = document.createElement('div');
+  foo.classList.add();
+  assert_true( foo.hasAttribute('class') );
+  assert_equals( foo.classList + '', '', 'implicit' );
+  assert_equals( foo.classList.toString(), '', 'explicit' );
+}, 'Invoking add or remove should set the class attribute');
+// The ordered set parser must skip ASCII whitespace (U+0009, U+000A, U+000C, U+000D, and U+0020.)
+test(function () {
+  var foo = document.createElement('div');
+  foo.className = 'a ';
+  foo.classList.add('b');
+  assert_equals(foo.className,'a b');
+}, 'classList.add should treat " " as a space');
+test(function () {
+  var foo = document.createElement('div');
+  foo.className = 'a\t';
+  foo.classList.add('b');
+  assert_equals(foo.className,'a b');
+}, 'classList.add should treat \\t as a space');
+test(function () {
+  var foo = document.createElement('div');
+  foo.className = 'a\r';
+  foo.classList.add('b');
+  assert_equals(foo.className,'a b');
+}, 'classList.add should treat \\r as a space');
+test(function () {
+  var foo = document.createElement('div');
+  foo.className = 'a\n';
+  foo.classList.add('b');
+  assert_equals(foo.className,'a b');
+}, 'classList.add should treat \\n as a space');
+test(function () {
+  var foo = document.createElement('div');
+  foo.className = 'a\f';
+  foo.classList.add('b');
+  assert_equals(foo.className,'a b');
+}, 'classList.add should treat \\f as a space');
+test(function () {
+  //WebIDL and ECMAScript 5 - a readonly property has a getter but not a setter
+  //ES5 makes [[Put]] fail but not throw
+  var failed = false;
+  secondelem.className = 'token1';
+  try {
+    secondelem.classList.length = 0;
+  } catch(e) {
+    failed = e;
+  }
+  assert_equals(secondelem.classList.length,1);
+  assert_false(failed,'an error was thrown');
+}, 'classList.length must be read-only');
+test(function () {
+  var realList = secondelem.classList;
+  secondelem.classList = 'foo bar';
+  assert_equals(secondelem.classList,realList);
+  assert_equals(secondelem.classList.length,2);
+  assert_equals(secondelem.classList[0],'foo');
+  assert_equals(secondelem.classList[1],'bar');
+}, 'classList must have [PutForwards=value]');
+test(function () {
+  var foo = document.createElement('div');
+  foo.className = 'a';
+  foo.classList.replace('token1', 'token2');
+
+  assert_equals(foo.className, 'a');
+
+  foo.classList.replace('a', 'b');
+  assert_equals(foo.className, 'b');
+
+  assert_throws('SYNTAX_ERR', function () { foo.classList.replace('t with space', '') });
+  assert_throws('INVALID_CHARACTER_ERR', function () { foo.classList.replace('t with space', 'foo') });
+  assert_throws('SYNTAX_ERR', function () { foo.classList.replace('', 'foo') });
+}, 'classList.replace should work');
+
+test(function() {
+  var foo = document.createElement('div');
+  assert_throws(new TypeError(),
+                function() { foo.classList.supports('hello') });
+}, 'classList.supports should throw');
+    </script>
+  </head>
+  <body>
+
+    <div id="log"></div>
+
+  </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-closest.html b/testing/web-platform/tests/dom/nodes/Element-closest.html
new file mode 100644
index 000000000..386e3bd25
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-closest.html
@@ -0,0 +1,73 @@
+<!DOCTYPE HTML>
+<meta charset=utf8>
+<title>Test for Element.closest</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body id="body">
+  <div id="test8" class="div3" style="display:none">
+    <div id="test7" class="div2">
+      <div id="test6" class="div1">
+        <form id="test10" class="form2"></form>
+        <form id="test5" class="form1" name="form-a">
+          <input id="test1" class="input1" required>
+          <fieldset class="fieldset2" id="test2">
+            <select id="test3" class="select1" required>
+              <option default id="test4" value="">Test4</option>
+              <option selected id="test11">Test11</option>
+              <option id="test12">Test12</option>
+              <option id="test13">Test13</option>
+            </select>
+            <input id="test9" type="text" required>
+          </fieldset>
+        </form>
+      </div>
+    </div>
+  </div>
+  <div id=log></div>
+<script>
+  do_test("select"                     , "test12", "test3");
+  do_test("fieldset"                   , "test13", "test2");
+  do_test("div"                        , "test13", "test6");
+  do_test("body"                       , "test3" , "body");
+
+  do_test("[default]"                  , "test4" , "test4");
+  do_test("[selected]"                 , "test4" , "");
+  do_test("[selected]"                 , "test11", "test11");
+  do_test('[name="form-a"]'            , "test12", "test5");
+  do_test('form[name="form-a"]'        , "test13", "test5");
+  do_test("input[required]"            , "test9" , "test9");
+  do_test("select[required]"           , "test9" , "");
+
+  do_test("div:not(.div1)"             , "test13", "test7");
+  do_test("div.div3"                   , "test6" , "test8");
+  do_test("div#test7"                  , "test1" , "test7");
+
+  do_test(".div3 > .div2"              , "test12", "test7");
+  do_test(".div3 > .div1"              , "test12", "");
+  do_test("form > input[required]"     , "test9" , "");
+  do_test("fieldset > select[required]", "test12", "test3");
+
+  do_test("input + fieldset"           , "test6" , "");
+  do_test("form + form"                , "test3" , "test5");
+  do_test("form + form"                , "test5" , "test5");
+
+  do_test(":empty"                     , "test10", "test10");
+  do_test(":last-child"                , "test11", "test2");
+  do_test(":first-child"               , "test12", "test3");
+  do_test(":invalid"                   , "test11", "test2");
+
+  do_test(":scope"                     , "test4",  "test4");
+  do_test("select > :scope"            , "test4",  "test4");
+  do_test("div > :scope"               , "test4",  "");
+  do_test(":has(> :scope)"             , "test4",  "test3");
+function do_test(aSelector, aElementId, aTargetId) {
+  test(function() {
+    var el = document.getElementById(aElementId).closest(aSelector);
+    if (el === null) {
+      assert_equals("", aTargetId, aSelector);
+    } else {
+      assert_equals(el.id, aTargetId, aSelector);
+    }
+  }, "Element.closest with context node '" + aElementId + "' and selector '" + aSelector + "'");
+}
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-firstElementChild-entity-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-entity-xhtml.xhtml
new file mode 100644
index 000000000..f28005e9c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-entity-xhtml.xhtml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
+[
+<!ENTITY tree "<span id='first_element_child' style='font-weight:bold;'>unknown.</span>">
+]>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+<title>Entity References</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of Entity References</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is &tree;</p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  var fec = parentEl.firstElementChild;
+  assert_true(!!fec)
+  assert_equals(fec.nodeType, 1)
+  assert_equals(fec.getAttribute("id"), "first_element_child")
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-firstElementChild-entity.svg b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-entity.svg
new file mode 100644
index 000000000..3a20ea79a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-entity.svg
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"
+[
+<!ENTITY tree "<tspan id='first_element_child' font-weight='bold'>unknown.</tspan>">
+]>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>Entity References</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of Entity References</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of this test is &tree;</text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  var fec = parentEl.firstElementChild;
+  assert_true(!!fec)
+  assert_equals(fec.nodeType, 1)
+  assert_equals(fec.getAttribute("id"), "first_element_child")
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-firstElementChild-namespace-svg.svg b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-namespace-svg.svg
new file mode 100644
index 000000000..d42c08777
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-namespace-svg.svg
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     xmlns:pickle="http://ns.example.org/pickle"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>firstElementChild with namespaces</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of firstElementChild with namespaces</text>
+<g id="parentEl">
+  <pickle:dill id="first_element_child"/>
+</g>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var fec = parentEl.firstElementChild;
+  assert_true(!!fec)
+  assert_equals(fec.nodeType, 1)
+  assert_equals(fec.getAttribute("id"), "first_element_child")
+  assert_equals(fec.localName, "dill")
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-firstElementChild-namespace-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-namespace-xhtml.xhtml
new file mode 100644
index 000000000..29441d278
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-namespace-xhtml.xhtml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml"
+      xmlns:pickle="http://ns.example.org/pickle">
+<head>
+<title>firstElementChild with namespaces</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of firstElementChild with namespaces</h1>
+<div id="parentEl">
+  <pickle:dill id="first_element_child"/>
+</div>
+<div id="log"></div>
+<p id="parentEl">The result of this test is
+<span id="first_element_child" style="font-weight:bold;">logged above.</span></p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var fec = parentEl.firstElementChild;
+  assert_true(!!fec)
+  assert_equals(fec.nodeType, 1)
+  assert_equals(fec.getAttribute("id"), "first_element_child")
+  assert_equals(fec.localName, "dill")
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-firstElementChild-namespace.html b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-namespace.html
new file mode 100644
index 000000000..629deab3a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-namespace.html
@@ -0,0 +1,21 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>firstElementChild with namespaces</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of firstElementChild with namespaces</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is a unknown.</p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl")
+  var el = document.createElementNS("http://ns.example.org/pickle", "pickle:dill")
+  el.setAttribute("id", "first_element_child")
+  parentEl.appendChild(el)
+  var fec = parentEl.firstElementChild
+  assert_true(!!fec)
+  assert_equals(fec.nodeType, 1)
+  assert_equals(fec.getAttribute("id"), "first_element_child")
+  assert_equals(fec.localName, "dill")
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-firstElementChild-svg.svg b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-svg.svg
new file mode 100644
index 000000000..359c5b82c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-svg.svg
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>firstElementChild</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of firstElementChild</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of this test is
+<tspan id="first_element_child" font-weight="bold">unknown.</tspan></text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var fec = parentEl.firstElementChild;
+  assert_true(!!fec)
+  assert_equals(fec.nodeType, 1)
+  assert_equals(fec.getAttribute("id"), "first_element_child")
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-firstElementChild-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-xhtml.xhtml
new file mode 100644
index 000000000..302052b0f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-firstElementChild-xhtml.xhtml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>firstElementChild</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of firstElementChild</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is
+<span id="first_element_child" style="font-weight:bold;">logged above.</span></p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var fec = parentEl.firstElementChild;
+  assert_true(!!fec)
+  assert_equals(fec.nodeType, 1)
+  assert_equals(fec.getAttribute("id"), "first_element_child")
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-firstElementChild.html b/testing/web-platform/tests/dom/nodes/Element-firstElementChild.html
new file mode 100644
index 000000000..12a0c5946
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-firstElementChild.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>firstElementChild</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of firstElementChild</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is
+<span id="first_element_child" style="font-weight:bold;">logged above.</span></p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var fec = parentEl.firstElementChild;
+  assert_true(!!fec)
+  assert_equals(fec.nodeType, 1)
+  assert_equals(fec.getAttribute("id"), "first_element_child")
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-getElementsByClassName.html b/testing/web-platform/tests/dom/nodes/Element-getElementsByClassName.html
new file mode 100644
index 000000000..332c3060f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-getElementsByClassName.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>Element.getElementsByClassName</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var a = document.createElement("a"), b = document.createElement("b")
+  b.className = "foo"
+  a.appendChild(b)
+  var list = a.getElementsByClassName("foo")
+  assert_array_equals(list, [b])
+  var secondList = a.getElementsByClassName("foo")
+  assert_true(list === secondList || list !== secondList, "Caching is allowed.")
+}, "getElementsByClassName should work on disconnected subtrees.")
+test(function() {
+  var list = document.getElementsByClassName("foo")
+  assert_false(list instanceof NodeList, "NodeList")
+  assert_true(list instanceof HTMLCollection, "HTMLCollection")
+}, "Interface should be correct.")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-getElementsByTagName-change-document-HTMLNess-iframe.xml b/testing/web-platform/tests/dom/nodes/Element-getElementsByTagName-change-document-HTMLNess-iframe.xml
new file mode 100644
index 000000000..f3f286eaf
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-getElementsByTagName-change-document-HTMLNess-iframe.xml
@@ -0,0 +1 @@
+<root/>
diff --git a/testing/web-platform/tests/dom/nodes/Element-getElementsByTagName-change-document-HTMLNess.html b/testing/web-platform/tests/dom/nodes/Element-getElementsByTagName-change-document-HTMLNess.html
new file mode 100644
index 000000000..cc118d42c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-getElementsByTagName-change-document-HTMLNess.html
@@ -0,0 +1,50 @@
+<!doctype html>
+<meta charset=utf-8>
+<title></title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<iframe src="Element-getElementsByTagName-change-document-HTMLNess-iframe.xml"></iframe>
+<script>
+  onload = function() {
+    var parent = document.createElement("div");
+    var child1 = document.createElementNS("http://www.w3.org/1999/xhtml", "a");
+    child1.textContent = "xhtml:a";
+    var child2 = document.createElementNS("http://www.w3.org/1999/xhtml", "A");
+    child2.textContent = "xhtml:A";
+    var child3 = document.createElementNS("", "a");
+    child3.textContent = "a";
+    var child4 = document.createElementNS("", "A");
+    child4.textContent = "A";
+
+    parent.appendChild(child1);
+    parent.appendChild(child2);
+    parent.appendChild(child3);
+    parent.appendChild(child4);
+
+    var list = parent.getElementsByTagName("A");
+    assert_array_equals(list, [child1, child4],
+      "In an HTML document, should lowercase the tagname passed in for HTML " +
+      "elements only");
+
+    frames[0].document.documentElement.appendChild(parent);
+    assert_array_equals(list, [child1, child4],
+      "After changing document, should still be lowercasing for HTML");
+
+    assert_array_equals(parent.getElementsByTagName("A"),
+                        [child2, child4],
+      "New list with same root and argument should not be lowercasing now");
+
+    // Now reinsert all those nodes into the parent, to blow away caches.
+    parent.appendChild(child1);
+    parent.appendChild(child2);
+    parent.appendChild(child3);
+    parent.appendChild(child4);
+    assert_array_equals(list, [child1, child4],
+      "After blowing away caches, should still have the same list");
+
+    assert_array_equals(parent.getElementsByTagName("A"),
+                        [child2, child4],
+      "New list with same root and argument should still not be lowercasing");
+    done();
+  }
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-getElementsByTagName.html b/testing/web-platform/tests/dom/nodes/Element-getElementsByTagName.html
new file mode 100644
index 000000000..87c4fe934
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-getElementsByTagName.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Element.getElementsByTagName</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-getelementsbytagname">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-Element-getElementsByTagName.js"></script>
+<div id="log"></div>
+<script>
+var element;
+setup(function() {
+  element = document.createElement("div");
+  element.appendChild(document.createTextNode("text"));
+  var p = element.appendChild(document.createElement("p"));
+  p.appendChild(document.createElement("a"))
+   .appendChild(document.createTextNode("link"));
+  p.appendChild(document.createElement("b"))
+   .appendChild(document.createTextNode("bold"));
+  p.appendChild(document.createElement("em"))
+   .appendChild(document.createElement("u"))
+   .appendChild(document.createTextNode("emphasized"));
+  element.appendChild(document.createComment("comment"));
+});
+
+test_getElementsByTagName(element, element);
+
+test(function() {
+  assert_array_equals(element.getElementsByTagName(element.localName), []);
+}, "Matching the context object");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-getElementsByTagNameNS.html b/testing/web-platform/tests/dom/nodes/Element-getElementsByTagNameNS.html
new file mode 100644
index 000000000..f826afc39
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-getElementsByTagNameNS.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Element.getElementsByTagNameNS</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-getelementsbytagnamens">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-Element-getElementsByTagNameNS.js"></script>
+<div id="log"></div>
+<script>
+var element;
+setup(function() {
+  element = document.createElement("div");
+  element.appendChild(document.createTextNode("text"));
+  var p = element.appendChild(document.createElement("p"));
+  p.appendChild(document.createElement("a"))
+   .appendChild(document.createTextNode("link"));
+  p.appendChild(document.createElement("b"))
+   .appendChild(document.createTextNode("bold"));
+  p.appendChild(document.createElement("em"))
+   .appendChild(document.createElement("u"))
+   .appendChild(document.createTextNode("emphasized"));
+  element.appendChild(document.createComment("comment"));
+});
+
+test_getElementsByTagNameNS(element, element);
+
+test(function() {
+  assert_array_equals(element.getElementsByTagNameNS("*", element.localName), []);
+}, "Matching the context object (wildcard namespace)");
+
+test(function() {
+  assert_array_equals(
+    element.getElementsByTagNameNS("http://www.w3.org/1999/xhtml",
+                                   element.localName),
+    []);
+}, "Matching the context object (specific namespace)");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-hasAttributes.html b/testing/web-platform/tests/dom/nodes/Element-hasAttributes.html
new file mode 100644
index 000000000..fbb9c233b
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-hasAttributes.html
@@ -0,0 +1,40 @@
+<!doctype html>
+<meta charset="utf-8">
+<title></title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+
+<button></button>
+<div id="foo"></div>
+<p data-foo=""></p>
+
+<script>
+test(function() {
+    var buttonElement = document.getElementsByTagName('button')[0];
+    assert_equals(buttonElement.hasAttributes(), false, 'hasAttributes() on empty element must return false.');
+
+    var emptyDiv = document.createElement('div');
+    assert_equals(emptyDiv.hasAttributes(), false, 'hasAttributes() on dynamically created empty element must return false.');
+
+}, 'element.hasAttributes() must return false when the element does not have attribute.');
+
+test(function() {
+    var divWithId = document.getElementById('foo');
+    assert_equals(divWithId.hasAttributes(), true, 'hasAttributes() on element with id attribute must return true.');
+
+    var divWithClass = document.createElement('div');
+    divWithClass.setAttribute('class', 'foo');
+    assert_equals(divWithClass.hasAttributes(), true, 'hasAttributes() on dynamically created element with class attribute must return true.');
+
+    var pWithCustomAttr = document.getElementsByTagName('p')[0];
+    assert_equals(pWithCustomAttr.hasAttributes(), true, 'hasAttributes() on element with custom attribute must return true.');
+
+    var divWithCustomAttr = document.createElement('div');
+    divWithCustomAttr.setAttribute('data-custom', 'foo');
+    assert_equals(divWithCustomAttr.hasAttributes(), true, 'hasAttributes() on dynamically created element with custom attribute must return true.');
+
+}, 'element.hasAttributes() must return true when the element has attribute.');
+
+</script>
+</body>
diff --git a/testing/web-platform/tests/dom/nodes/Element-insertAdjacentElement.html b/testing/web-platform/tests/dom/nodes/Element-insertAdjacentElement.html
new file mode 100644
index 000000000..d03e56680
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-insertAdjacentElement.html
@@ -0,0 +1,91 @@
+<!doctype html>
+<meta charset=utf-8>
+<title></title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+
+<div id="target"></div>
+<div id="parent"><span id=target2></span></div>
+<div id="log" style="visibility:visible"></div>
+<span id="test1"></span>
+<span id="test2"></span>
+<span id="test3"></span>
+<span id="test4"></span>
+<script>
+var target = document.getElementById("target");
+var target2 = document.getElementById("target2");
+
+test(function() {
+  assert_throws("SyntaxError", function() {
+    target.insertAdjacentElement("test", document.getElementById("test1"))
+  });
+
+  assert_throws("SyntaxError", function() {
+    target2.insertAdjacentElement("test", document.getElementById("test1"))
+  });
+}, "Inserting to an invalid location should cause a Syntax Error exception")
+
+test(function() {
+  var el = target.insertAdjacentElement("beforebegin", document.getElementById("test1"));
+  assert_equals(target.previousSibling.id, "test1");
+  assert_equals(el.id, "test1");
+
+  el = target2.insertAdjacentElement("beforebegin", document.getElementById("test1"));
+  assert_equals(target2.previousSibling.id, "test1");
+  assert_equals(el.id, "test1");
+}, "Inserted element should be target element's previous sibling for 'beforebegin' case")
+
+test(function() {
+  var el = target.insertAdjacentElement("afterbegin", document.getElementById("test2"));
+  assert_equals(target.firstChild.id, "test2");
+  assert_equals(el.id, "test2");
+
+  el = target2.insertAdjacentElement("afterbegin", document.getElementById("test2"));
+  assert_equals(target2.firstChild.id, "test2");
+  assert_equals(el.id, "test2");
+}, "Inserted element should be target element's first child for 'afterbegin' case")
+
+test(function() {
+  var el = target.insertAdjacentElement("beforeend", document.getElementById("test3"));
+  assert_equals(target.lastChild.id, "test3");
+  assert_equals(el.id, "test3");
+
+  el = target2.insertAdjacentElement("beforeend", document.getElementById("test3"));
+  assert_equals(target2.lastChild.id, "test3");
+  assert_equals(el.id, "test3");
+}, "Inserted element should be target element's last child for 'beforeend' case")
+
+test(function() {
+  var el = target.insertAdjacentElement("afterend", document.getElementById("test4"));
+  assert_equals(target.nextSibling.id, "test4");
+  assert_equals(el.id, "test4");
+
+  el = target2.insertAdjacentElement("afterend", document.getElementById("test4"));
+  assert_equals(target2.nextSibling.id, "test4");
+  assert_equals(el.id, "test4");
+}, "Inserted element should be target element's next sibling for 'afterend' case")
+
+test(function() {
+  var docElement = document.documentElement;
+  docElement.style.visibility="hidden";
+
+  assert_throws("HierarchyRequestError", function() {
+    var el = docElement.insertAdjacentElement("beforebegin", document.getElementById("test1"));
+    assert_equals(el, null);
+  });
+
+  var el = docElement.insertAdjacentElement("afterbegin", document.getElementById("test2"));
+  assert_equals(docElement.firstChild.id, "test2");
+  assert_equals(el.id, "test2");
+
+  el = docElement.insertAdjacentElement("beforeend", document.getElementById("test3"));
+  assert_equals(docElement.lastChild.id, "test3");
+  assert_equals(el.id, "test3");
+
+  assert_throws("HierarchyRequestError", function() {
+    var el = docElement.insertAdjacentElement("afterend", document.getElementById("test4"));
+    assert_equals(el, null);
+  });
+}, "Adding more than one child to document should cause a HierarchyRequestError exception")
+
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-insertAdjacentText.html b/testing/web-platform/tests/dom/nodes/Element-insertAdjacentText.html
new file mode 100644
index 000000000..0fafabb51
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-insertAdjacentText.html
@@ -0,0 +1,76 @@
+<!doctype html>
+<meta charset=utf-8>
+<title></title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<body style="visibility:hidden">
+<div id="target"></div>
+<div id="parent"><span id=target2></span></div>
+<div id="log" style="visibility:visible"></div>
+</body>
+<script>
+var target = document.getElementById("target");
+var target2 = document.getElementById("target2");
+
+test(function() {
+  assert_throws("SyntaxError", function() {
+    target.insertAdjacentText("test", "text")
+  });
+
+  assert_throws("SyntaxError", function() {
+    target2.insertAdjacentText("test", "test")
+  });
+}, "Inserting to an invalid location should cause a Syntax Error exception")
+
+test(function() {
+  target.insertAdjacentText("beforebegin", "test1");
+  assert_equals(target.previousSibling.nodeValue, "test1");
+
+  target2.insertAdjacentText("beforebegin", "test1");
+  assert_equals(target2.previousSibling.nodeValue, "test1");
+}, "Inserted text node should be target element's previous sibling for 'beforebegin' case")
+
+test(function() {
+  target.insertAdjacentText("afterbegin", "test2");
+  assert_equals(target.firstChild.nodeValue, "test2");
+
+  target2.insertAdjacentText("afterbegin", "test2");
+  assert_equals(target2.firstChild.nodeValue, "test2");
+}, "Inserted text node should be target element's first child for 'afterbegin' case")
+
+test(function() {
+  target.insertAdjacentText("beforeend", "test3");
+  assert_equals(target.lastChild.nodeValue, "test3");
+
+  target2.insertAdjacentText("beforeend", "test3");
+  assert_equals(target2.lastChild.nodeValue, "test3");
+}, "Inserted text node should be target element's last child for 'beforeend' case")
+
+test(function() {
+  target.insertAdjacentText("afterend", "test4");
+  assert_equals(target.nextSibling.nodeValue, "test4");
+
+  target2.insertAdjacentText("afterend", "test4");
+  assert_equals(target.nextSibling.nodeValue, "test4");
+}, "Inserted text node should be target element's next sibling for 'afterend' case")
+
+test(function() {
+  var docElement = document.documentElement;
+  docElement.style.visibility="hidden";
+
+  assert_throws("HierarchyRequestError", function() {
+    docElement.insertAdjacentText("beforebegin", "text1")
+  });
+
+  docElement.insertAdjacentText("afterbegin", "test2");
+  assert_equals(docElement.firstChild.nodeValue, "test2");
+
+  docElement.insertAdjacentText("beforeend", "test3");
+  assert_equals(docElement.lastChild.nodeValue, "test3");
+
+  assert_throws("HierarchyRequestError", function() {
+    docElement.insertAdjacentText("afterend", "test4")
+  });
+}, "Adding more than one child to document should cause a HierarchyRequestError exception")
+
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-lastElementChild-svg.svg b/testing/web-platform/tests/dom/nodes/Element-lastElementChild-svg.svg
new file mode 100644
index 000000000..1cec4a130
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-lastElementChild-svg.svg
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>lastElementChild</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of lastElementChild</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of <tspan id="first_element_child">this test</tspan> is <tspan id="last_element_child" font-weight="bold">not</tspan> known.</text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var lec = parentEl.lastElementChild;
+  assert_true(!!lec)
+  assert_equals(lec.nodeType, 1)
+  assert_equals(lec.getAttribute("id"), "last_element_child")
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-lastElementChild-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-lastElementChild-xhtml.xhtml
new file mode 100644
index 000000000..3150b92a4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-lastElementChild-xhtml.xhtml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>firstElementChild</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of firstElementChild</h1>
+<div id="log"></div>
+<p id="parentEl">The result of <span id="first_element_child">this test</span> is <span id="last_element_child" style="font-weight:bold;">logged</span> above.</p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var lec = parentEl.lastElementChild;
+  assert_true(!!lec)
+  assert_equals(lec.nodeType, 1)
+  assert_equals(lec.getAttribute("id"), "last_element_child")
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-lastElementChild.html b/testing/web-platform/tests/dom/nodes/Element-lastElementChild.html
new file mode 100644
index 000000000..de7aebdf2
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-lastElementChild.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>lastElementChild</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of lastElementChild</h1>
+<div id="log"></div>
+<p id="parentEl">The result of <span id="first_element_child">this test</span> is <span id="last_element_child" style="font-weight:bold;">logged</span> above.</p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var lec = parentEl.lastElementChild;
+  assert_true(!!lec)
+  assert_equals(lec.nodeType, 1)
+  assert_equals(lec.getAttribute("id"), "last_element_child")
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-matches.html b/testing/web-platform/tests/dom/nodes/Element-matches.html
new file mode 100644
index 000000000..e04c0f9d1
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-matches.html
@@ -0,0 +1,87 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>Selectors-API Level 2 Test Suite: HTML with Selectors Level 3</title>
+<!-- Selectors API Test Suite Version 3 -->
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/dom/nodes/selectors.js"></script>
+<script src="/dom/nodes/ParentNode-querySelector-All.js"></script>
+<script src="Element-matches.js"></script>
+<style>iframe { visibility: hidden; position: absolute; }</style>
+
+<div id="log">This test requires JavaScript.</div>
+
+<script>
+async_test(function() {
+  var frame = document.createElement("iframe");
+  frame.onload = this.step_func_done(init);
+  frame.src = "/dom/nodes/ParentNode-querySelector-All-content.html#target";
+  document.body.appendChild(frame);
+});
+
+function init(e) {
+  /*
+   * This test suite tests Selectors API methods in 4 different contexts:
+   * 1. Document node
+   * 2. In-document Element node
+   * 3. Detached Element node (an element with no parent, not in the document)
+   * 4. Document Fragment node
+   *
+   * For each context, the following tests are run:
+   *
+   * The interface check tests ensure that each type of node exposes the Selectors API methods.
+   *
+   * The matches() tests are run
+   * All the selectors tested for both the valid and invalid selector tests are found in selectors.js.
+   * See comments in that file for documentation of the format used.
+   *
+   * The level2-lib.js file contains all the common test functions for running each of the aforementioned tests
+   */
+
+  var docType  = "html"; // Only run tests suitable for HTML
+
+  // Prepare the nodes for testing
+  var doc = e.target.contentDocument;                 // Document Node tests
+
+  var element = doc.getElementById("root");   // In-document Element Node tests
+
+  //Setup the namespace tests
+  setupSpecialElements(doc, element);
+
+  var outOfScope = element.cloneNode(true);   // Append this to the body before running the in-document
+                                               // Element tests, but after running the Document tests. This
+                                               // tests that no elements that are not descendants of element
+                                               // are selected.
+
+  traverse(outOfScope, function(elem) {        // Annotate each element as being a clone; used for verifying
+    elem.setAttribute("data-clone", "");     // that none of these elements ever match.
+  });
+
+
+  var detached = element.cloneNode(true);     // Detached Element Node tests
+
+  var fragment = doc.createDocumentFragment(); // Fragment Node tests
+  fragment.appendChild(element.cloneNode(true));
+
+  // Setup Tests
+  interfaceCheckMatches("Document", doc);
+  interfaceCheckMatches("Detached Element", detached);
+  interfaceCheckMatches("Fragment", fragment);
+  interfaceCheckMatches("In-document Element", element);
+
+  runSpecialMatchesTests("DIV Element", element);
+  runSpecialMatchesTests("NULL Element", document.createElement("null"));
+  runSpecialMatchesTests("UNDEFINED Element", document.createElement("undefined"));
+
+  runInvalidSelectorTestMatches("Document", doc, invalidSelectors);
+  runInvalidSelectorTestMatches("Detached Element", detached, invalidSelectors);
+  runInvalidSelectorTestMatches("Fragment", fragment, invalidSelectors);
+  runInvalidSelectorTestMatches("In-document Element", element, invalidSelectors);
+
+  runMatchesTest("In-document", doc, validSelectors, "html");
+  runMatchesTest("Detached", detached, validSelectors, "html");
+  runMatchesTest("Fragment", fragment, validSelectors, "html");
+
+  runMatchesTest("In-document", doc, scopedSelectors, "html");
+}
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-matches.js b/testing/web-platform/tests/dom/nodes/Element-matches.js
new file mode 100644
index 000000000..1bc0f3d08
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-matches.js
@@ -0,0 +1,127 @@
+/*
+ * Check that the matches() method exists on the given Node
+ */
+function interfaceCheckMatches(type, obj) {
+  if (obj.nodeType === obj.ELEMENT_NODE) {
+    test(function() {
+      assert_idl_attribute(obj, "matches", type + " supports matches");
+    }, type + " supports matches")
+  }
+}
+
+function runSpecialMatchesTests(type, element) {
+  test(function() { // 1
+    if (element.tagName.toLowerCase() === "null") {
+      assert_true(element.matches(null), "An element with the tag name '" + element.tagName.toLowerCase() + "' should match.");
+    } else {
+      assert_false(element.matches(null), "An element with the tag name '" + element.tagName.toLowerCase() + "' should not match.");
+    }
+  }, type + ".matches(null)")
+
+  test(function() { // 2
+    if (element.tagName.toLowerCase() === "undefined") {
+      assert_true(element.matches(undefined), "An element with the tag name '" + element.tagName.toLowerCase() + "' should match.");
+    } else {
+      assert_false(element.matches(undefined), "An element with the tag name '" + element.tagName.toLowerCase() + "' should not match.");
+    }
+  }, type + ".matches(undefined)")
+
+  test(function() { // 3
+    assert_throws(TypeError(), function() {
+      element.matches();
+    }, "This should throw a TypeError.")
+  }, type + ".matches no parameter")
+}
+
+/*
+ * Execute queries with the specified invalid selectors for matches()
+ * Only run these tests when errors are expected. Don't run for valid selector tests.
+ */
+function runInvalidSelectorTestMatches(type, root, selectors) {
+  if (root.nodeType === root.ELEMENT_NODE) {
+    for (var i = 0; i < selectors.length; i++) {
+      var s = selectors[i];
+      var n = s["name"];
+      var q = s["selector"];
+
+      test(function() {
+        assert_throws("SyntaxError", function() {
+          root.matches(q)
+        })
+      }, type + ".matches: " + n + ": " + q);
+    }
+  }
+}
+
+function runMatchesTest(type, root, selectors, docType) {
+  var nodeType = getNodeType(root);
+
+  for (var i = 0; i < selectors.length; i++) {
+    var s = selectors[i];
+    var n = s["name"];
+    var q = s["selector"];
+    var e = s["expect"];
+    var u = s["unexpected"];
+
+    var ctx = s["ctx"];
+    var ref = s["ref"];
+
+    if ((!s["exclude"] || (s["exclude"].indexOf(nodeType) === -1 && s["exclude"].indexOf(docType) === -1))
+     && (s["testType"] & TEST_MATCH) ) {
+
+      if (ctx && !ref) {
+        test(function() {
+          var j, element, refNode;
+          for (j = 0; j < e.length; j++) {
+            element = root.querySelector("#" + e[j]);
+            refNode = root.querySelector(ctx);
+            assert_true(element.matches(q, refNode), "The element #" + e[j] + " should match the selector.")
+          }
+
+          if (u) {
+            for (j = 0; j < u.length; j++) {
+              element = root.querySelector("#" + u[j]);
+              refNode = root.querySelector(ctx);
+              assert_false(element.matches(q, refNode), "The element #" + u[j] + " should not match the selector.")
+            }
+          }
+        }, type + " Element.matches: " + n + " (with refNode Element): " + q);
+      }
+
+      if (ref) {
+        test(function() {
+          var j, element, refNodes;
+          for (j = 0; j < e.length; j++) {
+            element = root.querySelector("#" + e[j]);
+            refNodes = root.querySelectorAll(ref);
+            assert_true(element.matches(q, refNodes), "The element #" + e[j] + " should match the selector.")
+          }
+
+          if (u) {
+            for (j = 0; j < u.length; j++) {
+              element = root.querySelector("#" + u[j]);
+              refNodes = root.querySelectorAll(ref);
+              assert_false(element.matches(q, refNodes), "The element #" + u[j] + " should not match the selector.")
+            }
+          }
+        }, type + " Element.matches: " + n + " (with refNodes NodeList): " + q);
+      }
+
+      if (!ctx && !ref) {
+        test(function() {
+          for (var j = 0; j < e.length; j++) {
+            var element = root.querySelector("#" + e[j]);
+            assert_true(element.matches(q), "The element #" + e[j] + " should match the selector.")
+          }
+
+          if (u) {
+            for (j = 0; j < u.length; j++) {
+              element = root.querySelector("#" + u[j]);
+              assert_false(element.matches(q), "The element #" + u[j] + " should not match the selector.")
+            }
+          }
+        }, type + " Element.matches: " + n + " (with no refNodes): " + q);
+      }
+    }
+  }
+}
diff --git a/testing/web-platform/tests/dom/nodes/Element-nextElementSibling-svg.svg b/testing/web-platform/tests/dom/nodes/Element-nextElementSibling-svg.svg
new file mode 100644
index 000000000..3e17cad20
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-nextElementSibling-svg.svg
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>nextElementSibling</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of nextElementSibling</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of <tspan id="first_element_child">this test</tspan> is <tspan id="last_element_child" font-weight="bold">unknown.</tspan></text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var fec = document.getElementById("first_element_child");
+  var nes = fec.nextElementSibling;
+  assert_true(!!nes)
+  assert_equals(nes.nodeType, 1)
+  assert_equals(nes.getAttribute("id"), "last_element_child")
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-nextElementSibling-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-nextElementSibling-xhtml.xhtml
new file mode 100644
index 000000000..915209bda
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-nextElementSibling-xhtml.xhtml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>nextElementSibling</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of nextElementSibling</h1>
+<div id="log"></div>
+<p id="parentEl">The result of <span id="first_element_child">this test</span> is <span id="last_element_child" style="font-weight:bold;">unknown.</span></p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var fec = document.getElementById("first_element_child");
+  var nes = fec.nextElementSibling;
+  assert_true(!!nes)
+  assert_equals(nes.nodeType, 1)
+  assert_equals(nes.getAttribute("id"), "last_element_child")
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-nextElementSibling.html b/testing/web-platform/tests/dom/nodes/Element-nextElementSibling.html
new file mode 100644
index 000000000..985c602f4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-nextElementSibling.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>nextElementSibling</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of nextElementSibling</h1>
+<div id="log"></div>
+<p id="parentEl">The result of <span id="first_element_child">this test</span> is <span id="last_element_child" style="font-weight:bold;">unknown.</span></p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var fec = document.getElementById("first_element_child");
+  var nes = fec.nextElementSibling;
+  assert_true(!!nes)
+  assert_equals(nes.nodeType, 1)
+  assert_equals(nes.getAttribute("id"), "last_element_child")
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-previousElementSibling-svg.svg b/testing/web-platform/tests/dom/nodes/Element-previousElementSibling-svg.svg
new file mode 100644
index 000000000..671d2c87f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-previousElementSibling-svg.svg
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>previousElementSibling</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of previousElementSibling</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of <tspan id="first_element_child">this test</tspan> is
+<tspan id="middle_element_child" font-weight="bold">unknown.</tspan>
+
+
+
+<tspan id="last_element_child" display="none">fnord</tspan> </text>
+
+<h:script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var lec = document.getElementById("last_element_child");
+  var pes = lec.previousElementSibling;
+  assert_true(!!pes)
+  assert_equals(pes.nodeType, 1)
+  assert_equals(pes.getAttribute("id"), "middle_element_child")
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-previousElementSibling-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-previousElementSibling-xhtml.xhtml
new file mode 100644
index 000000000..7fbbc6d38
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-previousElementSibling-xhtml.xhtml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>previousElementSibling</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of previousElementSibling</h1>
+<div id="log"></div>
+<p id="parentEl">The result of <span id="first_element_child">this test</span> is
+<span id="middle_element_child" style="font-weight:bold;">unknown.</span>
+
+
+
+<span id="last_element_child" style="display:none;">fnord</span> </p>
+<script><![CDATA[
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var lec = document.getElementById("last_element_child");
+  var pes = lec.previousElementSibling;
+  assert_true(!!pes)
+  assert_equals(pes.nodeType, 1)
+  assert_equals(pes.getAttribute("id"), "middle_element_child")
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-previousElementSibling.html b/testing/web-platform/tests/dom/nodes/Element-previousElementSibling.html
new file mode 100644
index 000000000..02c7b16df
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-previousElementSibling.html
@@ -0,0 +1,23 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>previousElementSibling</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of previousElementSibling</h1>
+<div id="log"></div>
+<p id="parentEl">The result of <span id="first_element_child">this test</span> is
+<span id="middle_element_child" style="font-weight:bold;">unknown.</span>
+
+
+
+<span id="last_element_child" style="display:none;">fnord</span> </p>
+<script>
+test(function() {
+  var parentEl = document.getElementById("parentEl");
+  var lec = document.getElementById("last_element_child");
+  var pes = lec.previousElementSibling;
+  assert_true(!!pes)
+  assert_equals(pes.nodeType, 1)
+  assert_equals(pes.getAttribute("id"), "middle_element_child")
+})
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-remove.html b/testing/web-platform/tests/dom/nodes/Element-remove.html
new file mode 100644
index 000000000..ab642d660
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-remove.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Element.remove</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-childnode-remove">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="ChildNode-remove.js"></script>
+<div id=log></div>
+<script>
+var node, parentNode;
+setup(function() {
+  node = document.createElement("div");
+  parentNode = document.createElement("div");
+});
+testRemove(node, parentNode, "element");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-removeAttributeNS.html b/testing/web-platform/tests/dom/nodes/Element-removeAttributeNS.html
new file mode 100644
index 000000000..a2773e6f1
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-removeAttributeNS.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Element.removeAttributeNS</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="attributes.js"></script>
+<div id="log"></div>
+<script>
+var XML = "http://www.w3.org/XML/1998/namespace"
+
+test(function() {
+  var el = document.createElement("foo")
+  el.setAttributeNS(XML, "a:bb", "pass")
+  attr_is(el.attributes[0], "pass", "bb", XML, "a", "a:bb")
+  el.removeAttributeNS(XML, "a:bb")
+  assert_equals(el.attributes.length, 1)
+  attr_is(el.attributes[0], "pass", "bb", XML, "a", "a:bb")
+}, "removeAttributeNS should take a local name.")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Element-siblingElement-null-svg.svg b/testing/web-platform/tests/dom/nodes/Element-siblingElement-null-svg.svg
new file mode 100644
index 000000000..48c981b8c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-siblingElement-null-svg.svg
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>Null test</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of previousElementSibling and nextElementSibling returning null</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of this test is <tspan id="first_element_child" font-weight="bold">unknown.</tspan></text>
+
+<h:script><![CDATA[
+test(function() {
+  var fec = document.getElementById("first_element_child");
+  assert_equals(fec.previousElementSibling, null)
+  assert_equals(fec.nextElementSibling, null)
+})
+]]></h:script>
+</svg>
diff --git a/testing/web-platform/tests/dom/nodes/Element-siblingElement-null-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Element-siblingElement-null-xhtml.xhtml
new file mode 100644
index 000000000..fcf4d54ff
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-siblingElement-null-xhtml.xhtml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Null Test</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of previousElementSibling and nextElementSibling returning null</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is <span id="first_element_child" style="font-weight:bold;">unknown.</span></p>
+<script><![CDATA[
+test(function() {
+  var fec = document.getElementById("first_element_child");
+  assert_equals(fec.previousElementSibling, null)
+  assert_equals(fec.nextElementSibling, null)
+})
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Element-siblingElement-null.html b/testing/web-platform/tests/dom/nodes/Element-siblingElement-null.html
new file mode 100644
index 000000000..a7920b4fb
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-siblingElement-null.html
@@ -0,0 +1,16 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Null test</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of previousElementSibling and nextElementSibling returning null</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is <span id="first_element_child" style="font-weight:bold;">unknown.</span></p>
+<script>
+test(function() {
+  var fec = document.getElementById("first_element_child");
+  assert_equals(fec.previousElementSibling, null)
+  assert_equals(fec.nextElementSibling, null)
+})
+</script>
+
diff --git a/testing/web-platform/tests/dom/nodes/Element-tagName.html b/testing/web-platform/tests/dom/nodes/Element-tagName.html
new file mode 100644
index 000000000..035a23cc5
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Element-tagName.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<title>Element.tagName</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var HTMLNS = "http://www.w3.org/1999/xhtml"
+  assert_equals(document.createElementNS(HTMLNS, "I").tagName, "I")
+  assert_equals(document.createElementNS(HTMLNS, "i").tagName, "I")
+  assert_equals(document.createElementNS(HTMLNS, "x:b").tagName, "X:B")
+}, "tagName should upper-case for HTML elements in HTML documents.")
+
+test(function() {
+  var SVGNS = "http://www.w3.org/2000/svg"
+  assert_equals(document.createElementNS(SVGNS, "svg").tagName, "svg")
+  assert_equals(document.createElementNS(SVGNS, "SVG").tagName, "SVG")
+  assert_equals(document.createElementNS(SVGNS, "s:svg").tagName, "s:svg")
+  assert_equals(document.createElementNS(SVGNS, "s:SVG").tagName, "s:SVG")
+}, "tagName should not upper-case for SVG elements in HTML documents.")
+
+test(function() {
+  if ("DOMParser" in window) {
+    var xmlel = new DOMParser()
+      .parseFromString('<div xmlns="http://www.w3.org/1999/xhtml">Test</div>', 'text/xml')
+      .documentElement;
+    assert_equals(xmlel.tagName, "div", "tagName should be lowercase in XML")
+    var htmlel = document.importNode(xmlel, true)
+    assert_equals(htmlel.tagName, "DIV", "tagName should be uppercase in HTML")
+  }
+}, "tagName should be updated when changing ownerDocument")
+
+test(function() {
+  var xmlel = document.implementation
+    .createDocument("http://www.w3.org/1999/xhtml", "div", null)
+    .documentElement;
+  assert_equals(xmlel.tagName, "div", "tagName should be lowercase in XML")
+  var htmlel = document.importNode(xmlel, true)
+  assert_equals(htmlel.tagName, "DIV", "tagName should be uppercase in HTML")
+}, "tagName should be updated when changing ownerDocument (createDocument without prefix)")
+
+test(function() {
+  var xmlel = document.implementation
+    .createDocument("http://www.w3.org/1999/xhtml", "foo:div", null)
+    .documentElement;
+  assert_equals(xmlel.tagName, "foo:div", "tagName should be lowercase in XML")
+  var htmlel = document.importNode(xmlel, true)
+  assert_equals(htmlel.tagName, "FOO:DIV", "tagName should be uppercase in HTML")
+}, "tagName should be updated when changing ownerDocument (createDocument with prefix)")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/MutationObserver-attributes.html b/testing/web-platform/tests/dom/nodes/MutationObserver-attributes.html
new file mode 100644
index 000000000..6721b7eec
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/MutationObserver-attributes.html
@@ -0,0 +1,406 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>MutationObservers: attributes mutations</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="mutationobservers.js"></script>
+<h1>MutationObservers: attributes mutations</h1>
+<div id="log"></div>
+
+<section style="display: none">
+<p id='n'></p>
+
+<p id='n00'></p>
+<p id='n01'></p>
+<p id='n02'></p>
+<p id='n03'></p>
+<input id="n04" type="text">
+
+<p id='n10'></p>
+<p id='n11'></p>
+<p id='n12' class='c01'></p>
+<p id='n13' class='c01 c02'></p>
+
+<p id='n20'></p>
+<p id='n21'></p>
+<p id='n22'></p>
+<p id='n23'></p>
+<p id='n24' class="c01 c02"></p>
+
+<p id='n30' class="c01 c02"></p>
+<p id='n31' class="c01 c02"></p>
+<p id='n32' class="c01 c02"></p>
+
+<p id='n40' class="c01 c02"></p>
+<p id='n41' class="c01 c02"></p>
+<p id='n42' class="c01 c02"></p>
+<p id='n43' class="c01 c02"></p>
+<p id='n44' class="c01 c02"></p>
+<p id='n45' class="c01 c02"></p>
+
+<p id='n50' class="c01 c02"></p>
+<p id='n51'></p>
+
+<p id='n60'></p>
+<p id='n61' class="c01"></p>
+<p id='n62'></p>
+
+<p id='n70' class="c01"></p>
+<p id='n71'></p>
+<input id="n72" type="text">
+
+<p id='n80'></p>
+<p id='n81'></p>
+
+<p id='n90'></p>
+<p id='n91'></p>
+<p id='n92'></p>
+
+<p id='n1000'></p>
+<p id='n1001' class='c01'></p>
+
+<p id='n2000'></p>
+<p id='n2001' class='c01'></p>
+
+<p id='n3000'></p>
+
+</section>
+
+<script>
+
+var n = document.getElementById('n');
+
+runMutationTest(n,
+                  {"attributes":true},
+                  [{type: "attributes", attributeName: "id"}],
+                  function() { n.id = "n000";},
+                  "attributes Element.id: update, no oldValue, mutation");
+
+var n00 = document.getElementById('n00');
+runMutationTest(n00,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n00", attributeName: "id"}],
+                  function() { n00.id = "n000";},
+                  "attributes Element.id: update mutation");
+
+var n01 = document.getElementById('n01');
+runMutationTest(n01,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n01", attributeName: "id"}],
+                  function() { n01.id = "";},
+                  "attributes Element.id: empty string update mutation");
+
+var n02 = document.getElementById('n02');
+runMutationTest(n02,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n02", attributeName: "id"}, {type: "attributes", attributeName: "class"}],
+                  function() { n02.id = "n02"; n02.setAttribute("class", "c01");},
+                  "attributes Element.id: same value mutation");
+
+var n03 = document.getElementById('n03');
+runMutationTest(n03,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n03", attributeName: "id"}],
+                  function() { n03.unknown = "c02"; n03.id = "n030";},
+                  "attributes Element.unknown: IDL attribute no mutation");
+
+var n04 = document.getElementById('n04');
+runMutationTest(n04,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "text", attributeName: "type"}, {type: "attributes", oldValue: "n04", attributeName: "id"}],
+                  function() { n04.type = "unknown"; n04.id = "n040";},
+                  "attributes HTMLInputElement.type: type update mutation");
+
+  var n10 = document.getElementById('n10');
+runMutationTest(n10,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", attributeName: "class"}],
+                  function() { n10.className = "c01";},
+                  "attributes Element.className: new value mutation");
+
+  var n11 = document.getElementById('n11');
+runMutationTest(n11,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", attributeName: "class"}],
+                  function() { n11.className = "";},
+                  "attributes Element.className: empty string update mutation");
+
+  var n12 = document.getElementById('n12');
+runMutationTest(n12,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01", attributeName: "class"}],
+                  function() { n12.className = "c01";},
+                  "attributes Element.className: same value mutation");
+
+  var n13 = document.getElementById('n13');
+runMutationTest(n13,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
+                  function() { n13.className = "c01 c02";},
+                  "attributes Element.className: same multiple values mutation");
+
+  var n20 = document.getElementById('n20');
+runMutationTest(n20,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", attributeName: "class"}],
+                  function() { n20.classList.add("c01");},
+                  "attributes Element.classList.add: single token addition mutation");
+
+  var n21 = document.getElementById('n21');
+runMutationTest(n21,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", attributeName: "class"}],
+                  function() { n21.classList.add("c01", "c02", "c03");},
+                  "attributes Element.classList.add: multiple tokens addition mutation");
+
+  var n22 = document.getElementById('n22');
+runMutationTest(n22,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n22", attributeName: "id"}],
+                  function() { try { n22.classList.add("c01", "", "c03"); } catch (e) { };
+                               n22.id = "n220"; },
+                  "attributes Element.classList.add: syntax err/no mutation");
+
+  var n23 = document.getElementById('n23');
+runMutationTest(n23,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n23", attributeName: "id"}],
+                  function() { try { n23.classList.add("c01", "c 02", "c03"); } catch (e) { };
+                               n23.id = "n230"; },
+                  "attributes Element.classList.add: invalid character/no mutation");
+
+  var n24 = document.getElementById('n24');
+runMutationTest(n24,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}, {type: "attributes", oldValue: "n24", attributeName: "id"}],
+                  function() { n24.classList.add("c02"); n24.id = "n240";},
+                  "attributes Element.classList.add: same value mutation");
+
+  var n30 = document.getElementById('n30');
+runMutationTest(n30,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
+                  function() { n30.classList.remove("c01");},
+                  "attributes Element.classList.remove: single token removal mutation");
+
+  var n31 = document.getElementById('n31');
+runMutationTest(n31,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
+                  function() { n31.classList.remove("c01", "c02");},
+                  "attributes Element.classList.remove: multiple tokens removal mutation");
+
+  var n32 = document.getElementById('n32');
+runMutationTest(n32,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}, {type: "attributes", oldValue: "n32", attributeName: "id"}],
+                  function() { n32.classList.remove("c03"); n32.id = "n320";},
+                  "attributes Element.classList.remove: missing token removal mutation");
+
+  var n40 = document.getElementById('n40');
+runMutationTest(n40,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
+                  function() { n40.classList.toggle("c01");},
+                  "attributes Element.classList.toggle: token removal mutation");
+
+  var n41 = document.getElementById('n41');
+runMutationTest(n41,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
+                  function() { n41.classList.toggle("c03");},
+                  "attributes Element.classList.toggle: token addition mutation");
+
+  var n42 = document.getElementById('n42');
+runMutationTest(n42,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
+                  function() { n42.classList.toggle("c01", false);},
+                  "attributes Element.classList.toggle: forced token removal mutation");
+
+  var n43 = document.getElementById('n43');
+runMutationTest(n43,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n43", attributeName: "id"}],
+                  function() { n43.classList.toggle("c03", false); n43.id = "n430"; },
+                  "attributes Element.classList.toggle: forced missing token removal no mutation");
+
+  var n44 = document.getElementById('n44');
+runMutationTest(n44,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n44", attributeName: "id"}],
+                  function() { n44.classList.toggle("c01", true); n44.id = "n440"; },
+                  "attributes Element.classList.toggle: forced existing token addition no mutation");
+
+  var n45 = document.getElementById('n45');
+runMutationTest(n45,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
+                  function() { n45.classList.toggle("c03", true);},
+                  "attributes Element.classList.toggle: forced token addition mutation");
+
+  var n50 = document.getElementById('n50');
+runMutationTest(n50,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
+                  function() {
+                    for (var i = 0; i < n50.attributes.length; i++) {
+                      var attr = n50.attributes[i];
+                      if (attr.localName === "class") {
+                        attr.value = "c03";
+                      }
+                    };
+                  },
+                  "attributes Element.attributes.value: update mutation");
+
+  var n51 = document.getElementById('n51');
+runMutationTest(n51,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n51", attributeName: "id"}],
+                  function() {
+                    n51.attributes[0].value = "n51";
+                  },
+                  "attributes Element.attributes.value: same id mutation");
+
+  var n60 = document.getElementById('n60');
+runMutationTest(n60,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n60", attributeName: "id"}],
+                  function() {
+                    n60.setAttribute("id", "n601");
+                  },
+                  "attributes Element.setAttribute: id mutation");
+
+  var n61 = document.getElementById('n61');
+runMutationTest(n61,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01", attributeName: "class"}],
+                  function() {
+                    n61.setAttribute("class", "c01");
+                  },
+                  "attributes Element.setAttribute: same class mutation");
+
+  var n62 = document.getElementById('n62');
+runMutationTest(n62,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", attributeName: "classname"}],
+                  function() {
+                    n62.setAttribute("classname", "c01");
+                  },
+                  "attributes Element.setAttribute: classname mutation");
+
+  var n70 = document.getElementById('n70');
+runMutationTest(n70,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "c01", attributeName: "class"}],
+                  function() {
+                    n70.removeAttribute("class");
+                  },
+                  "attributes Element.removeAttribute: removal mutation");
+
+  var n71 = document.getElementById('n71');
+runMutationTest(n71,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n71", attributeName: "id"}],
+                  function() {
+                    n71.removeAttribute("class");
+                    n71.id = "n710";
+                  },
+                  "attributes Element.removeAttribute: removal no mutation");
+
+  var n72 = document.getElementById('n72');
+runMutationTest(n72,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "text", attributeName: "type"}, {type: "attributes", oldValue: "n72", attributeName: "id"}],
+                  function() {
+                    n72.removeAttribute("type");
+                    n72.id = "n720";
+                  },
+                  "childList HTMLInputElement.removeAttribute: type removal mutation");
+
+  var n80 = document.getElementById('n80');
+runMutationTest(n80,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", attributeName: "private", attributeNamespace: "http://example.org/"}],
+                  function() {
+                    n80.setAttributeNS("http://example.org/", "private", "42");
+                  },
+                  "attributes Element.setAttributeNS: creation mutation");
+
+  var n81 = document.getElementById('n81');
+runMutationTest(n81,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", attributeName: "lang", attributeNamespace: "http://www.w3.org/XML/1998/namespace"}],
+                  function() {
+                    n81.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "42");
+                  },
+                  "attributes Element.setAttributeNS: prefixed attribute creation mutation");
+
+  var n90 = document.getElementById('n90');
+  n90.setAttributeNS("http://example.org/", "private", "42");
+runMutationTest(n90,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "42", attributeName: "private", attributeNamespace: "http://example.org/"}],
+                  function() {
+                    n90.removeAttributeNS("http://example.org/", "private");
+                  },
+                  "attributes Element.removeAttributeNS: removal mutation");
+
+  var n91 = document.getElementById('n91');
+runMutationTest(n91,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n91", attributeName: "id"}],
+                  function() {
+                    n91.removeAttributeNS("http://example.org/", "private");
+                    n91.id = "n910";
+                  },
+                  "attributes Element.removeAttributeNS: removal no mutation");
+
+  var n92 = document.getElementById('n92');
+runMutationTest(n92,
+                  {"attributes":true, "attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n92", attributeName: "id"}],
+                  function() {
+                    n92.removeAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang");
+                    n92.id = "n920";
+                  },
+                  "attributes Element.removeAttributeNS: prefixed attribute removal no mutation");
+
+  var n1000 = document.getElementById('n1000');
+runMutationTest(n1000,
+                  {"attributes":true, "attributeOldValue": true,"attributeFilter": ["id"]},
+                  [{type: "attributes", oldValue: "n1000", attributeName: "id"}],
+                  function() { n1000.id = "abc"; n1000.className = "c01"},
+                  "attributes/attributeFilter Element.id/Element.className: update mutation");
+
+  var n1001 = document.getElementById('n1001');
+runMutationTest(n1001,
+                  {"attributes":true, "attributeOldValue": true,"attributeFilter": ["id", "class"]},
+                  [{type: "attributes", oldValue: "n1001", attributeName: "id"},
+                   {type: "attributes", oldValue: "c01", attributeName: "class"}],
+                  function() { n1001.id = "abc"; n1001.className = "c02"; n1001.setAttribute("lang", "fr");},
+                  "attributes/attributeFilter Element.id/Element.className: multiple filter update mutation");
+
+  var n2000 = document.getElementById('n2000');
+runMutationTest(n2000,
+                  {"attributeOldValue": true},
+                  [{type: "attributes", oldValue: "n2000", attributeName: "id"}],
+                  function() { n2000.id = "abc";},
+                  "attributeOldValue alone Element.id: update mutation");
+
+  var n2001 = document.getElementById('n2001');
+runMutationTest(n2001,
+                  {"attributeFilter": ["id", "class"]},
+                  [{type: "attributes", attributeName: "id"},
+                   {type: "attributes", attributeName: "class"}],
+                  function() { n2001.id = "abcd"; n2001.className = "c02"; n2001.setAttribute("lang", "fr");},
+                  "attributeFilter alone Element.id/Element.className: multiple filter update mutation");
+
+  var n3000 = document.getElementById('n3000');
+runMutationTest(n3000,
+                  {"subtree": true, "childList":false, "attributes" : true},
+                  [{type: "attributes", attributeName: "id" }],
+                  function() { n3000.textContent = "CHANGED"; n3000.id = "abc";},
+                  "childList false: no childList mutation");
+
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/MutationObserver-characterData.html b/testing/web-platform/tests/dom/nodes/MutationObserver-characterData.html
new file mode 100644
index 000000000..addaef03d
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/MutationObserver-characterData.html
@@ -0,0 +1,215 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>MutationObservers: characterData mutations</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="mutationobservers.js"></script>
+<h1>MutationObservers: characterData mutations</h1>
+<div id="log"></div>
+
+<section style="display: none">
+
+<p id='n'>text content</p>
+
+<p id='n00'>text content</p>
+
+<p id='n10'>CHAN</p>
+<p id='n11'>CHANGED</p>
+<p id='n12'>CHANGED</p>
+
+<p id='n20'>CHGED</p>
+<p id='n21'>CHANGED</p>
+<p id='n22'>CHANGED</p>
+
+<p id='n30'>CCCHANGED</p>
+<p id='n31'>CHANGED</p>
+
+<p id='n40'>CCCHANGED</p>
+<p id='n41'>CHANGED</p>
+
+<p id="n50"><?processing data?></p>
+
+<p id="n60"><!-- data --></p>
+
+<p id='n70'>CHANN</p>
+<p id='n71'>CHANN</p>
+
+<p id='n80'>CHANN</p>
+<p id='n81'>CHANN</p>
+
+<p id='n90'>CHANN</p>
+
+</section>
+
+<script>
+  var n = document.getElementById('n').firstChild;
+runMutationTest(n,
+                  {"characterData":true},
+                  [{type: "characterData"}],
+                  function() { n.data = "NEW VALUE"; },
+                  "characterData Text.data: simple mutation without oldValue");
+
+  var n00 = document.getElementById('n00').firstChild;
+runMutationTest(n00,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "text content" }],
+                  function() { n00.data = "CHANGED"; },
+                  "characterData Text.data: simple mutation");
+
+  var n10 = document.getElementById('n10').firstChild;
+runMutationTest(n10,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHAN" }],
+                  function() { n10.appendData("GED"); },
+                  "characterData Text.appendData: simple mutation");
+
+  var n11 = document.getElementById('n11').firstChild;
+runMutationTest(n11,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHANGED" }],
+                  function() { n11.appendData(""); },
+                  "characterData Text.appendData: empty string mutation");
+
+  var n12 = document.getElementById('n12').firstChild;
+runMutationTest(n12,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHANGED" }],
+                  function() { n12.appendData(null); },
+                  "characterData Text.appendData: null string mutation");
+
+  var n20 = document.getElementById('n20').firstChild;
+runMutationTest(n20,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHGED" }],
+                  function() { n20.insertData(2, "AN"); },
+                  "characterData Text.insertData: simple mutation");
+
+  var n21 = document.getElementById('n21').firstChild;
+runMutationTest(n21,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHANGED" }],
+                  function() { n21.insertData(2, ""); },
+                  "characterData Text.insertData: empty string mutation");
+
+  var n22 = document.getElementById('n22').firstChild;
+runMutationTest(n22,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHANGED" }],
+                  function() { n22.insertData(2, null); },
+                  "characterData Text.insertData: null string mutation");
+
+  var n30 = document.getElementById('n30').firstChild;
+runMutationTest(n30,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CCCHANGED" }],
+                  function() { n30.deleteData(0, 2); },
+                  "characterData Text.deleteData: simple mutation");
+
+  var n31 = document.getElementById('n31').firstChild;
+runMutationTest(n31,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHANGED" }, {type: "characterData", oldValue: "CHANGED" }],
+                  function() { n31.deleteData(0, 0); n31.data = "n31"; },
+                  "characterData Text.deleteData: empty mutation");
+
+  var n40 = document.getElementById('n40').firstChild;
+runMutationTest(n40,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CCCHANGED" }],
+                  function() { n40.replaceData(0, 2, "CH"); },
+                  "characterData Text.replaceData: simple mutation");
+
+  var n41 = document.getElementById('n41').firstChild;
+runMutationTest(n41,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHANGED" }],
+                  function() { n41.replaceData(0, 0, "CH"); },
+                  "characterData Text.replaceData: empty mutation");
+
+  var n50 = document.getElementById('n50').firstChild;
+runMutationTest(n50,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "?processing data?" },{type: "characterData", oldValue: "CHANGED" },{type: "characterData", oldValue: "CHANGED" }],
+                  function() {
+                    n50.data = "CHANGED";
+                    n50.deleteData(0, 0);
+                    n50.replaceData(0, 2, "CH"); },
+                  "characterData ProcessingInstruction: data mutations");
+
+  var n60 = document.getElementById('n60').firstChild;
+runMutationTest(n60,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: " data " },{type: "characterData", oldValue: "CHANGED" },{type: "characterData", oldValue: "CHANGED" }],
+                  function() {
+                    n60.data = "CHANGED";
+                    n60.deleteData(0, 0);
+                    n60.replaceData(0, 2, "CH"); },
+                  "characterData Comment: data mutations");
+
+  var n70 = document.getElementById('n70');
+  var r70 = null;
+  test(function () {
+    n70.appendChild(document.createTextNode("NNN"));
+    n70.appendChild(document.createTextNode("NGED"));
+    r70 = document.createRange();
+    r70.setStart(n70.firstChild, 4);
+    r70.setEnd(n70.lastChild, 1);
+   }, "Range (r70) is created");
+runMutationTest(n70.firstChild,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHANN" }],
+                  function() { r70.deleteContents(); },
+                  "characterData Range.deleteContents: child and data removal mutation");
+
+  var n71 = document.getElementById('n71');
+  var r71 = null;
+  test(function () {
+    n71.appendChild(document.createTextNode("NNN"));
+    n71.appendChild(document.createTextNode("NGED"));
+    r71 = document.createRange();
+    r71.setStart(n71.firstChild, 4);
+    r71.setEnd(n71.lastChild, 1);
+   }, "Range (r71) is created");
+runMutationTest(n71.lastChild,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "NGED"}],
+                  function() { r71.deleteContents(); },
+                  "characterData Range.deleteContents: child and data removal mutation (2)");
+
+  var n80 = document.getElementById('n80');
+  var r80 = null;
+  test(function () {
+    n80.appendChild(document.createTextNode("NNN"));
+    n80.appendChild(document.createTextNode("NGED"));
+    r80 = document.createRange();
+    r80.setStart(n80.firstChild, 4);
+    r80.setEnd(n80.lastChild, 1);
+   }, "Range (r80) is created");
+runMutationTest(n80.firstChild,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHANN" }],
+                  function() { r80.extractContents(); },
+                  "characterData Range.extractContents: child and data removal mutation");
+
+  var n81 = document.getElementById('n81');
+  var r81 = null;
+  test(function () {
+    n81.appendChild(document.createTextNode("NNN"));
+    n81.appendChild(document.createTextNode("NGED"));
+    r81 = document.createRange();
+    r81.setStart(n81.firstChild, 4);
+    r81.setEnd(n81.lastChild, 1);
+   }, "Range (r81) is created");
+runMutationTest(n81.lastChild,
+                  {"characterData":true,"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "NGED" }],
+                  function() { r81.extractContents(); },
+                  "characterData Range.extractContents: child and data removal mutation (2)");
+
+  var n90 = document.getElementById('n90').firstChild;
+runMutationTest(n90,
+                  {"characterDataOldValue":true},
+                  [{type: "characterData", oldValue: "CHANN" }],
+                  function() { n90.data = "CHANGED"; },
+                  "characterData/characterDataOldValue alone Text.data: simple mutation");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/MutationObserver-childList.html b/testing/web-platform/tests/dom/nodes/MutationObserver-childList.html
new file mode 100644
index 000000000..e4c674e02
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/MutationObserver-childList.html
@@ -0,0 +1,434 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>MutationObservers: childList mutations</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="mutationobservers.js"></script>
+<h1>MutationObservers: childList mutations</h1>
+<div id="log"></div>
+
+<section style="display: none">
+<p id='dummies'>
+<span id='d30'>text content</span>
+<span id='d35'>text content</span>
+<span id='d40'>text content</span>
+<span id='d45'>text content</span>
+<span id='d50'>text content</span>
+<span id='d51'>text content</span>
+</p>
+
+</section>
+<section style="display: none">
+<p id='n00'><span>text content</span></p>
+
+<p id='n10'><span>text content</span></p>
+<p id='n11'></p>
+<p id='n12'></p>
+<p id='n13'><span>text content</span></p>
+
+<p id='n20'>PAS</p>
+<p id='n21'>CH</p>
+
+<p id='n30'><span>text content</span></p>
+<p id='n31'><span>text content</span></p>
+<p id='n32'><span>AN</span><span>CH</span><span>GED</span></p>
+<p id='n33'><span>text content</span></p>
+<p id='n34'><span>text content</span></p>
+<p id='n35'><span>text content</span></p>
+
+<p id='n40'><span>text content</span></p>
+<p id='n41'><span>text content</span></p>
+<p id='n42'><span>CH</span><span>GED</span><span>AN</span></p>
+<p id='n43'><span>text content</span></p>
+<p id='n44'><span>text content</span></p>
+<p id='n45'><span>text content</span></p>
+
+
+<p id='n50'><span>text content</span></p>
+<p id='n51'><span>text content</span></p>
+<p id='n52'><span>NO </span><span>CHANGED</span></p>
+<p id='n53'><span>text content</span></p>
+
+<p id='n60'><span>text content</span></p>
+
+<p id='n70'><span>NO </span><span>CHANGED</span></p>
+<p id='n71'>CHANN</p>
+
+<p id='n80'><span>NO </span><span>CHANGED</span></p>
+<p id='n81'>CHANN</p>
+
+<p id='n90'><span>CHA</span><span>ED</span></p>
+<p id='n91'>CHAE</p>
+
+<p id='n100'><span id="s1">CHAN</span><span id="s2">GED</span></p>
+
+</section>
+
+<script>
+  var dummies = document.getElementById('dummies');
+
+  function createFragment() {
+    var fragment = document.createDocumentFragment();
+    fragment.appendChild(document.createTextNode("11"));
+    fragment.appendChild(document.createTextNode("22"));
+    return fragment;
+  }
+
+  var n00 = document.getElementById('n00');
+
+  runMutationTest(n00,
+                  {"childList":true, "attributes":true},
+                  [{type: "attributes", attributeName: "class"}],
+                  function() { n00.nodeValue = ""; n00.setAttribute("class", "dummy");},
+                  "childList Node.nodeValue: no mutation");
+
+  var n10 = document.getElementById('n10');
+  runMutationTest(n10,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n10.firstChild],
+                    addedNodes: function() {return [n10.firstChild]}}],
+                  function() { n10.textContent = "new data"; },
+                  "childList Node.textContent: replace content mutation");
+
+  var n11 = document.getElementById('n11');
+  runMutationTest(n11,
+                  {"childList":true},
+                  [{type: "childList",
+                    addedNodes: function() {return [n11.firstChild]}}],
+                  function() { n11.textContent = "new data"; },
+                  "childList Node.textContent: no previous content mutation");
+
+  var n12 = document.getElementById('n12');
+  runMutationTest(n12,
+                  {"childList":true, "attributes":true},
+                  [{type: "attributes", attributeName: "class"}],
+                  function() { n12.textContent = ""; n12.setAttribute("class", "dummy");},
+                  "childList Node.textContent: textContent no mutation");
+
+  var n13 = document.getElementById('n13');
+  runMutationTest(n13,
+                  {"childList":true},
+                  [{type: "childList", removedNodes: [n13.firstChild]}],
+                  function() { n13.textContent = ""; },
+                  "childList Node.textContent: empty string mutation");
+
+  var n20 = document.getElementById('n20');
+  n20.appendChild(document.createTextNode("S"));
+  runMutationTest(n20,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n20.lastChild],
+                    previousSibling: n20.firstChild}],
+                  function() { n20.normalize(); },
+                  "childList Node.normalize mutation");
+
+  var n21 = document.getElementById('n21');
+  n21.appendChild(document.createTextNode("AN"));
+  n21.appendChild(document.createTextNode("GED"));
+  runMutationTest(n21,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n21.lastChild.previousSibling],
+                    previousSibling: n21.firstChild,
+                    nextSibling: n21.lastChild},
+                   {type: "childList",
+                    removedNodes: [n21.lastChild],
+                    previousSibling: n21.firstChild}],
+                  function() { n21.normalize(); },
+                  "childList Node.normalize mutations");
+
+  var n30 = document.getElementById('n30');
+  var d30 = document.getElementById('d30');
+  runMutationTest(n30,
+                  {"childList":true},
+                  [{type: "childList",
+                    addedNodes: [d30],
+                    nextSibling: n30.firstChild}],
+                  function() { n30.insertBefore(d30, n30.firstChild); },
+                  "childList Node.insertBefore: addition mutation");
+
+  var n31 = document.getElementById('n31');
+  runMutationTest(n31,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n31.firstChild]}],
+                  function() { dummies.insertBefore(n31.firstChild, dummies.firstChild); },
+                  "childList Node.insertBefore: removal mutation");
+
+  var n32 = document.getElementById('n32');
+  runMutationTest(n32,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n32.firstChild.nextSibling],
+                    previousSibling: n32.firstChild, nextSibling: n32.lastChild},
+                    {type: "childList",
+                    addedNodes: [n32.firstChild.nextSibling],
+                    nextSibling: n32.firstChild}],
+                  function() { n32.insertBefore(n32.firstChild.nextSibling, n32.firstChild); },
+                  "childList Node.insertBefore: removal and addition mutations");
+
+  var n33 = document.getElementById('n33');
+  var f33 = createFragment();
+  runMutationTest(n33,
+                  {"childList":true},
+                  [{type: "childList",
+                    addedNodes: [f33.firstChild, f33.lastChild],
+                    nextSibling: n33.firstChild}],
+                  function() { n33.insertBefore(f33, n33.firstChild); },
+                  "childList Node.insertBefore: fragment addition mutations");
+
+  var n34 = document.getElementById('n34');
+  var f34 = createFragment();
+  runMutationTest(f34,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [f34.firstChild, f34.lastChild]}],
+                  function() { n34.insertBefore(f34, n34.firstChild); },
+                  "childList Node.insertBefore: fragment removal mutations");
+
+  var n35 = document.getElementById('n35');
+  var d35 = document.getElementById('d35');
+  runMutationTest(n35,
+                  {"childList":true},
+                  [{type: "childList",
+                    addedNodes: [d35],
+                    previousSibling: n35.firstChild}],
+                  function() { n35.insertBefore(d35, null); },
+                  "childList Node.insertBefore: last child addition mutation");
+
+  var n40 = document.getElementById('n40');
+  var d40 = document.getElementById('d40');
+  runMutationTest(n40,
+                  {"childList":true},
+                  [{type: "childList",
+                    addedNodes: [d40],
+                    previousSibling: n40.firstChild}],
+                  function() { n40.appendChild(d40); },
+                  "childList Node.appendChild: addition mutation");
+
+  var n41 = document.getElementById('n41');
+  runMutationTest(n41,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n41.firstChild]}],
+                  function() { dummies.appendChild(n41.firstChild); },
+                  "childList Node.appendChild: removal mutation");
+
+  var n42 = document.getElementById('n42');
+  runMutationTest(n42,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n42.firstChild.nextSibling],
+                    previousSibling: n42.firstChild, nextSibling: n42.lastChild},
+                    {type: "childList",
+                    addedNodes: [n42.firstChild.nextSibling],
+                    previousSibling: n42.lastChild}],
+                  function() { n42.appendChild(n42.firstChild.nextSibling); },
+                  "childList Node.appendChild: removal and addition mutations");
+
+  var n43 = document.getElementById('n43');
+  var f43 = createFragment();
+  runMutationTest(n43,
+                  {"childList":true},
+                  [{type: "childList",
+                    addedNodes: [f43.firstChild, f43.lastChild],
+                    previousSibling: n43.firstChild}],
+                  function() { n43.appendChild(f43); },
+                  "childList Node.appendChild: fragment addition mutations");
+
+  var n44 = document.getElementById('n44');
+  var f44 = createFragment();
+  runMutationTest(f44,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [f44.firstChild, f44.lastChild]}],
+                  function() { n44.appendChild(f44); },
+                  "childList Node.appendChild: fragment removal mutations");
+
+  var n45 = document.createElement('p');
+  var d45 = document.createElement('span');
+  runMutationTest(n45,
+                  {"childList":true},
+                  [{type: "childList",
+                    addedNodes: [d45]}],
+                  function() { n45.appendChild(d45); },
+                  "childList Node.appendChild: addition outside document tree mutation");
+
+  var n50 = document.getElementById('n50');
+  var d50 = document.getElementById('d50');
+  runMutationTest(n50,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n50.firstChild],
+                    addedNodes: [d50]}],
+                  function() { n50.replaceChild(d50, n50.firstChild); },
+                  "childList Node.replaceChild: replacement mutation");
+
+  var n51 = document.getElementById('n51');
+  var d51 = document.getElementById('d51');
+  runMutationTest(n51,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n51.firstChild]}],
+                  function() { d51.parentNode.replaceChild(n51.firstChild, d51); },
+                  "childList Node.replaceChild: removal mutation");
+
+  var n52 = document.getElementById('n52');
+  runMutationTest(n52,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n52.lastChild],
+                    previousSibling: n52.firstChild},
+                   {type: "childList",
+                    removedNodes: [n52.firstChild],
+                    addedNodes: [n52.lastChild]}],
+                  function() { n52.replaceChild(n52.lastChild, n52.firstChild); },
+                  "childList Node.replaceChild: internal replacement mutation");
+
+  var n53 = document.getElementById('n53');
+  runMutationTest(n53,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n53.firstChild]},
+                   {type: "childList",
+                    addedNodes: [n53.firstChild]}],
+                  function() { n53.replaceChild(n53.firstChild, n53.firstChild); },
+                  "childList Node.replaceChild: self internal replacement mutation");
+
+  var n60 = document.getElementById('n60');
+  runMutationTest(n60,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n60.firstChild]}],
+                  function() { n60.removeChild(n60.firstChild); },
+                  "childList Node.removeChild: removal mutation");
+
+  var n70 = document.getElementById('n70');
+  var r70 = null;
+  test(function () {
+    r70 = document.createRange();
+    r70.setStartBefore(n70.firstChild);
+    r70.setEndAfter(n70.firstChild);
+   }, "Range (r70) is created");
+  runMutationTest(n70,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n70.firstChild],
+                    nextSibling: n70.lastChild}],
+                  function() { r70.deleteContents(); },
+                  "childList Range.deleteContents: child removal mutation");
+
+  var n71 = document.getElementById('n71');
+  var r71 = null;
+  test(function () {
+    n71.appendChild(document.createTextNode("NNN"));
+    n71.appendChild(document.createTextNode("NGED"));
+    r71 = document.createRange();
+    r71.setStart(n71.firstChild, 4);
+    r71.setEnd(n71.lastChild, 1);
+   }, "Range (r71) is created");
+  runMutationTest(n71,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n71.firstChild.nextSibling],
+                    previousSibling: n71.firstChild,
+                    nextSibling: n71.lastChild}],
+                  function() { r71.deleteContents(); },
+                  "childList Range.deleteContents: child and data removal mutation");
+
+  var n80 = document.getElementById('n80');
+  var r80 = null;
+  test(function () {
+    r80 = document.createRange();
+    r80.setStartBefore(n80.firstChild);
+    r80.setEndAfter(n80.firstChild);
+   }, "Range (r80) is created");
+  runMutationTest(n80,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n80.firstChild],
+                    nextSibling: n80.lastChild}],
+                  function() { r80.extractContents(); },
+                  "childList Range.extractContents: child removal mutation");
+
+  var n81 = document.getElementById('n81');
+  var r81 = null;
+  test(function () {
+    n81.appendChild(document.createTextNode("NNN"));
+    n81.appendChild(document.createTextNode("NGED"));
+    r81 = document.createRange();
+    r81.setStart(n81.firstChild, 4);
+    r81.setEnd(n81.lastChild, 1);
+   }, "Range (r81) is created");
+  runMutationTest(n81,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n81.firstChild.nextSibling],
+                    previousSibling: n81.firstChild,
+                    nextSibling: n81.lastChild}],
+                  function() { r81.extractContents(); },
+                  "childList Range.extractContents: child and data removal mutation");
+
+  var n90 = document.getElementById('n90');
+  var f90 = document.createTextNode("NG");
+  var r90 = null;
+  test(function () {
+    r90 = document.createRange();
+    r90.setStartAfter(n90.firstChild);
+    r90.setEndBefore(n90.lastChild);
+   }, "Range (r90) is created");
+  runMutationTest(n90,
+                  {"childList":true},
+                  [{type: "childList",
+                    addedNodes: [f90],
+                    previousSibling: n90.firstChild,
+                    nextSibling: n90.lastChild}],
+                  function() { r90.insertNode(f90); },
+                  "childList Range.insertNode: child insertion mutation");
+
+  var n91 = document.getElementById('n91');
+  var f91 = document.createTextNode("NG");
+  var r91 = null;
+  test(function () {
+    n91.appendChild(document.createTextNode("D"));
+    r91 = document.createRange();
+    r91.setStart(n91.firstChild, 3);
+    r91.setEnd(n91.lastChild, 0);
+   }, "Range (r91) is created");
+  runMutationTest(n91,
+                  {"childList":true},
+                  [{type: "childList",
+                    addedNodes: function() { return [n91.lastChild.previousSibling]; },
+                    previousSibling: n91.firstChild,
+                    nextSibling: n91.lastChild},
+                   {type: "childList",
+                    addedNodes: [f91],
+                    previousSibling: n91.firstChild,
+                    nextSibling: function () { return n91.lastChild.previousSibling; } }],
+                  function() { r91.insertNode(f91); },
+                  "childList Range.insertNode: children insertion mutation");
+
+  var n100 = document.getElementById('n100');
+  var f100 = document.createElement("span");
+  var r100 = null;
+  test(function () {
+    r100 = document.createRange();
+    r100.setStartBefore(n100.firstChild);
+    r100.setEndAfter(n100.lastChild);
+   }, "Range (r100) is created");
+  runMutationTest(n100,
+                  {"childList":true},
+                  [{type: "childList",
+                    removedNodes: [n100.firstChild],
+                    nextSibling: n100.lastChild},
+                   {type: "childList",
+                    removedNodes: [n100.lastChild]},
+                   {type: "childList",
+                    addedNodes: [f100] }],
+                  function() { r100.surroundContents(f100); },
+                  "childList Range.surroundContents: children removal and addition mutation");
+
+</script>
+
+
diff --git a/testing/web-platform/tests/dom/nodes/MutationObserver-disconnect.html b/testing/web-platform/tests/dom/nodes/MutationObserver-disconnect.html
new file mode 100644
index 000000000..883edecf7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/MutationObserver-disconnect.html
@@ -0,0 +1,48 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>MutationObservers: disconnect</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>MutationObservers: disconnect</h1>
+<div id="log"></div>
+<section style="display: none">
+<p id='n00'></p>
+</section>
+<script>
+var n00 = document.getElementById('n00');
+var parentTest = async_test("subtree mutations");
+function masterMO(sequence, obs) {
+  parentTest.step(function() {
+    assert_equals(sequence.length, 4, "mutation records must match");
+  });
+  parentTest.done();
+}
+parentTest.step(function() {
+  (new MutationObserver(masterMO)).observe(n00.parentNode, {"subtree": true, "attributes": true});
+});
+
+var disconnectTest = async_test("disconnect discarded some mutations");
+function observerCallback(sequence, obs) {
+  disconnectTest.step(function() {
+    assert_equals(sequence.length, 1);
+    assert_equals(sequence[0].type, "attributes");
+    assert_equals(sequence[0].attributeName, "id");
+    assert_equals(sequence[0].oldValue, "latest");
+    disconnectTest.done();
+  });
+}
+
+var observer;
+disconnectTest.step(function() {
+  observer = new MutationObserver(observerCallback);
+  observer.observe(n00, {"attributes": true});
+  n00.id = "foo";
+  n00.id = "bar";
+  observer.disconnect();
+  observer.observe(n00, {"attributes": true, "attributeOldValue": true});
+  n00.id = "latest";
+  observer.disconnect();
+  observer.observe(n00, {"attributes": true, "attributeOldValue": true});
+  n00.id = "n0000";
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/MutationObserver-document.html b/testing/web-platform/tests/dom/nodes/MutationObserver-document.html
new file mode 100644
index 000000000..4662b2345
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/MutationObserver-document.html
@@ -0,0 +1,167 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>MutationObservers: takeRecords</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="mutationobservers.js"></script>
+<h1>MutationObservers: document mutations</h1>
+<div id="log"></div>
+
+<script id='s001'>
+  var setupTest = async_test("setup test");
+  var insertionTest = async_test("parser insertion mutations");
+  var insertionTest2 = async_test("parser script insertion mutation");
+  var testCounter = 0;
+
+  function masterMO(sequence, obs) {
+    testCounter++;
+    if (testCounter == 1) {
+      insertionTest.step(
+        function () {
+          checkRecords(document, sequence,
+                       [{type: "childList",
+                         addedNodes: function () {
+                           return [ document.getElementById("n00") ];
+                         },
+                         previousSibling: function () {
+                           return document.getElementById("s001");
+                         },
+                         target: document.body},
+                        {type: "childList",
+                         addedNodes: function () {
+                           return [ document.getElementById("s002") ];
+                         },
+                         previousSibling: function () {
+                           return document.getElementById("n00");
+                         },
+                         target: document.body},
+                        {type: "childList",
+                         addedNodes: function () {
+                           return [ document.getElementById("s002").firstChild ];
+                         },
+                         target: function () {
+                           return document.getElementById("s002");
+                         }}]);
+        });
+    } else if (testCounter == 2) {
+      insertionTest2.step(
+        function () {
+          checkRecords(document, sequence,
+                       [{type: "childList",
+                         addedNodes: function () {
+                           return [ document.getElementById("inserted_script") ];
+                         },
+                         target: function () {
+                          return document.getElementById("n00");
+                         }},
+                        {type: "childList",
+                         addedNodes: function () {
+                           return [ document.getElementById("inserted_element") ];
+                         },
+                         previousSibling: function () {
+                           return document.getElementById("s002");
+                         },
+                         target: document.body}
+                        ]);
+        });
+    }
+  }
+  var document_observer;
+  var newElement;
+  setupTest.step(function() {
+    document_observer = new MutationObserver(masterMO);
+    newElement = document.createElement("span");
+    document_observer.observe(document, {subtree:true,childList:true});
+    newElement.id = "inserted_element";
+    newElement.setAttribute("style", "display: none");
+    newElement.textContent = "my new span for n00";
+  });
+</script><p id='n00'></p><script id='s002'>
+  var newScript = document.createElement("script");
+  setupTest.step(function() {
+    newScript.textContent = "document.body.appendChild(newElement);";
+    newScript.id = "inserted_script";
+    document.getElementById("n00").appendChild(newScript);
+  });
+  if (testCounter < 1) {
+    insertionTest.step(
+      function () {
+        assert_unreached("document observer did not trigger");
+      });
+  }
+</script><script id='s003'>
+  setupTest.step(function() {
+    document_observer.disconnect();
+  });
+  if (testCounter < 2) {
+    insertionTest2.step(
+      function () {
+        assert_unreached("document observer did not trigger");
+      });
+  }
+  insertionTest.done();
+  insertionTest2.done();
+</script>
+
+<p id='n012'></p><div id='d01'>
+<script id='s011'>
+  var removalTest = async_test("removal of parent during parsing");
+  var d01 = document.getElementById("d01");
+  testCounter = 0;
+
+  function removalMO(sequence, obs) {
+    testCounter++;
+    if (testCounter == 1) {
+      removalTest.step(
+        function () {
+          checkRecords(document, sequence,
+                       [{type: "childList",
+                         removedNodes: function () {
+                           return [ d01 ];
+                         },
+                         previousSibling: function () {
+                           return document.getElementById("n012");
+                         },
+                         target: document.body}]);
+        });
+    } else if (testCounter == 2) {
+      removalTest.step(
+        function () {
+          checkRecords(document, sequence,
+                       [{type: "childList",
+                         addedNodes: function () {
+                           return [ document.getElementById("s012") ];
+                         },
+                         previousSibling: function () {
+                           return document.getElementById("n012");
+                         },
+                         target: document.body},
+                        {type: "childList",
+                          addedNodes: function () {
+                            return [ document.getElementById("s012").firstChild ];
+                          },
+                          target: function () {
+                            return document.getElementById("s012");
+                          }}]);
+        });
+    }
+  }
+  var document2_observer;
+  setupTest.step(function() {
+    document2_observer = new MutationObserver(removalMO);
+    document2_observer.observe(document, {subtree:true,childList:true});
+    d01.parentNode.removeChild(d01);
+  });
+</script><p id='n01'></p></div><script id='s012'>
+  setupTest.step(function() {
+    document2_observer.disconnect();
+  });
+  if (testCounter < 2) {
+    removalTest.step(
+      function () {
+        assert_unreached("document observer did not trigger");
+      });
+  }
+  removalTest.done();
+  setupTest.done();
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/MutationObserver-inner-outer.html b/testing/web-platform/tests/dom/nodes/MutationObserver-inner-outer.html
new file mode 100644
index 000000000..9f6d87141
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/MutationObserver-inner-outer.html
@@ -0,0 +1,65 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>MutationObservers: innerHTML, outerHTML mutations</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="mutationobservers.js"></script>
+<h1>MutationObservers: innerHTML, outerHTML mutations</h1>
+<div id="log"></div>
+
+<section style="display: none">
+
+<p id='n00'>old text</p>
+
+<p id='n01'>old text</p>
+
+<div id='n02'><p>old text</p></div>
+</section>
+
+<script>
+  var n00;
+  var n00oldText;
+  var n01;
+  var n01oldText;
+  var n02;
+
+  setup(function() {
+    n00 = document.getElementById('n00');
+    n00oldText = n00.firstChild;
+    n01 = document.getElementById('n01');
+    n01oldText = n01.firstChild;
+    n02 = document.getElementById('n02');
+  })
+
+  runMutationTest(n00,
+                  {childList:true,attributes:true},
+                  [{type: "childList",
+                    removedNodes: [n00oldText],
+                    addedNodes: function() {
+                      return [document.getElementById("n00").firstChild];
+                    }},
+                    {type: "attributes", attributeName: "class"}],
+                  function() { n00.innerHTML = "new text"; n00.className = "c01"},
+                  "innerHTML mutation");
+
+  runMutationTest(n01,
+                  {childList:true},
+                  [{type: "childList",
+                    removedNodes: [n01oldText],
+                    addedNodes: function() {
+                      return [document.getElementById("n01").firstChild,
+                              document.getElementById("n01").lastChild];
+                    }}],
+                  function() { n01.innerHTML = "<span>new</span><span>text</span>"; },
+                  "innerHTML with 2 children mutation");
+
+  runMutationTest(n02,
+                  {childList:true},
+                  [{type: "childList",
+                    removedNodes: [n02.firstChild],
+                    addedNodes: function() {
+                      return [n02.firstChild];
+                    }}],
+                  function() { n02.firstChild.outerHTML = "<p>next text</p>"; },
+                  "outerHTML mutation");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/MutationObserver-takeRecords.html b/testing/web-platform/tests/dom/nodes/MutationObserver-takeRecords.html
new file mode 100644
index 000000000..6a27ef77e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/MutationObserver-takeRecords.html
@@ -0,0 +1,53 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>MutationObservers: takeRecords</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="mutationobservers.js"></script>
+<h1>MutationObservers: takeRecords</h1>
+<div id="log"></div>
+
+<section style="display: none">
+
+<p id='n00'></p>
+
+</section>
+
+<script>
+
+  var n00 = document.getElementById('n00');
+
+  var unused = async_test("unreachabled test");
+
+  var observer;
+  unused.step(function () {
+    observer = new MutationObserver(unused.unreached_func("the observer callback should not fire"));
+    observer.observe(n00, { "subtree": true,
+                          "childList": true,
+                          "attributes": true,
+                          "characterData": true,
+                          "attributeOldValue": true,
+                          "characterDataOldValue": true});
+    n00.id = "foo";
+    n00.id = "bar";
+    n00.className = "bar";
+    n00.textContent = "old data";
+    n00.firstChild.data = "new data";
+  });
+
+  test(function() {
+    checkRecords(n00, observer.takeRecords(), [{type: "attributes", attributeName: "id", oldValue: "n00"},
+                           {type: "attributes", attributeName: "id", oldValue: "foo"},
+                           {type: "attributes", attributeName: "class"},
+                           {type: "childList", addedNodes: [n00.firstChild]},
+                           {type: "characterData", oldValue: "old data", target: n00.firstChild}]);
+  }, "All records present");
+
+  test(function() {
+    checkRecords(n00, observer.takeRecords(), []);
+  }, "No more records present");
+</script>
+<script>
+  unused.done();
+
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-appendChild.html b/testing/web-platform/tests/dom/nodes/Node-appendChild.html
new file mode 100644
index 000000000..684607961
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-appendChild.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Node.appendChild</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-appendchild">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<iframe src=about:blank></iframe>
+<script>
+// TODO: Exhaustive tests
+function testLeaf(node, desc) {
+  // WebIDL.
+  test(function() {
+    assert_throws(new TypeError(), function() { node.appendChild(null) })
+  }, "Appending null to a " + desc)
+
+  // Pre-insert step 1.
+  test(function() {
+    assert_throws("HIERARCHY_REQUEST_ERR", function() { node.appendChild(document.createTextNode("fail")) })
+  }, "Appending to a " + desc)
+}
+
+// WebIDL.
+test(function() {
+  assert_throws(new TypeError(), function() { document.body.appendChild(null) })
+  assert_throws(new TypeError(), function() { document.body.appendChild({'a':'b'}) })
+}, "WebIDL tests")
+
+// WebIDL and pre-insert step 1.
+test(function() {
+  testLeaf(document.createTextNode("Foo"), "text node")
+  testLeaf(document.createComment("Foo"), "comment")
+  testLeaf(document.doctype, "doctype")
+}, "Appending to a leaf node.")
+
+// Pre-insert step 5.
+test(function() {
+  var frameDoc = frames[0].document
+  assert_throws("HIERARCHY_REQUEST_ERR", function() { document.body.appendChild(frameDoc) })
+}, "Appending a document")
+
+// Pre-insert step 8.
+test(function() {
+  var frameDoc = frames[0].document
+  var s = frameDoc.createElement("a")
+  assert_equals(s.ownerDocument, frameDoc)
+  document.body.appendChild(s)
+  assert_equals(s.ownerDocument, document)
+}, "Adopting an orphan")
+test(function() {
+  var frameDoc = frames[0].document
+  var s = frameDoc.createElement("b")
+  assert_equals(s.ownerDocument, frameDoc)
+  frameDoc.body.appendChild(s)
+  assert_equals(s.ownerDocument, frameDoc)
+  document.body.appendChild(s)
+  assert_equals(s.ownerDocument, document)
+}, "Adopting a non-orphan")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-baseURI.html b/testing/web-platform/tests/dom/nodes/Node-baseURI.html
new file mode 100644
index 000000000..1672b6ecd
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-baseURI.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>Node.baseURI</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var element = document.createElement("div");
+  document.body.appendChild(element);
+  assert_equals(element.baseURI, document.URL);
+}, "For elements belonging to document, baseURI should be document url")
+
+test(function() {
+  var element = document.createElement("div");
+  assert_equals(element.baseURI, document.URL);
+}, "For elements unassigned to document, baseURI should be document url")
+
+test(function() {
+  var fragment = document.createDocumentFragment();
+  var element = document.createElement("div");
+  fragment.appendChild(element);
+  assert_equals(element.baseURI, document.URL)
+}, "For elements belonging to document fragments, baseURI should be document url")
+
+test(function() {
+  var fragment = document.createDocumentFragment();
+  var element = document.createElement("div");
+  fragment.appendChild(element);
+  document.body.appendChild(fragment);
+  assert_equals(element.baseURI, document.URL)
+}, "After inserting fragment into document, element baseURI should be document url")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-childNodes.html b/testing/web-platform/tests/dom/nodes/Node-childNodes.html
new file mode 100644
index 000000000..f7586fa74
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-childNodes.html
@@ -0,0 +1,99 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Node.childNodes</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-childnodes">
+<link rel=author title="Tim Taubert" href="mailto:ttaubert@mozilla.com">
+<link rel=author title="Ms2ger" href="mailto:Ms2ger@gmail.com">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var element = document.createElement("p");
+  assert_equals(element.childNodes, element.childNodes);
+}, "Caching of Node.childNodes");
+
+var check_parent_node = function(node) {
+  assert_array_equals(node.childNodes, []);
+
+  var children = node.childNodes;
+  var child = document.createElement("p");
+  node.appendChild(child);
+  assert_equals(node.childNodes, children);
+  assert_array_equals(children, [child]);
+  assert_equals(children.item(0), child);
+
+  var child2 = document.createComment("comment");
+  node.appendChild(child2);
+  assert_array_equals(children, [child, child2]);
+  assert_equals(children.item(0), child);
+  assert_equals(children.item(1), child2);
+
+  assert_false(2 in children);
+  assert_equals(children[2], undefined);
+  assert_equals(children.item(2), null);
+};
+
+test(function() {
+  check_parent_node(document.createElement("p"));
+}, "Node.childNodes on an Element.");
+
+test(function() {
+  check_parent_node(document.createDocumentFragment());
+}, "Node.childNodes on a DocumentFragment.");
+
+test(function() {
+  check_parent_node(new Document());
+}, "Node.childNodes on a Document.");
+
+test(function() {
+  var node = document.createElement("div");
+  var kid1 = document.createElement("p");
+  var kid2 = document.createTextNode("hey");
+  var kid3 = document.createElement("span");
+  node.appendChild(kid1);
+  node.appendChild(kid2);
+  node.appendChild(kid3);
+
+  var list = node.childNodes;
+  assert_array_equals([...list], [kid1, kid2, kid3]);
+
+  var keys = list.keys();
+  assert_false(keys instanceof Array);
+  keys = [...keys];
+  assert_array_equals(keys, [0, 1, 2]);
+
+  var values = list.values();
+  assert_false(values instanceof Array);
+  values = [...values];
+  assert_array_equals(values, [kid1, kid2, kid3]);
+
+  var entries = list.entries();
+  assert_false(entries instanceof Array);
+  entries = [...entries];
+  assert_equals(entries.length, keys.length);
+  assert_equals(entries.length, values.length);
+  for (var i = 0; i < entries.length; ++i) {
+    assert_array_equals(entries[i], [keys[i], values[i]]);
+  }
+
+  var cur = 0;
+  var thisObj = {};
+  list.forEach(function(value, key, listObj) {
+    assert_equals(listObj, list);
+    assert_equals(this, thisObj);
+    assert_equals(value, values[cur]);
+    assert_equals(key, keys[cur]);
+    cur++;
+  }, thisObj);
+  assert_equals(cur, entries.length);
+
+  assert_equals(list[Symbol.iterator], Array.prototype[Symbol.iterator]);
+  assert_equals(list.keys, Array.prototype.keys);
+  if (Array.prototype.values) {
+    assert_equals(list.values, Array.prototype.values);
+  }
+  assert_equals(list.entries, Array.prototype.entries);
+  assert_equals(list.forEach, Array.prototype.forEach);
+}, "Iterator behavior of Node.childNodes");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-cloneNode.html b/testing/web-platform/tests/dom/nodes/Node-cloneNode.html
new file mode 100644
index 000000000..9fb939f7e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-cloneNode.html
@@ -0,0 +1,272 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Node.cloneNode</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-clonenode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+function assert_equal_node(nodeA, nodeB) {
+  assert_equals(nodeB.nodeType, nodeA.nodeType, "nodeType");
+  assert_equals(nodeB.nodeName, nodeA.nodeName, "nodeName");
+
+  if (nodeA.nodeType === Node.ELEMENT_NODE) {
+    assert_equals(nodeB.prefix, nodeA.prefix);
+    assert_equals(nodeB.namespaceURI, nodeA.namespaceURI);
+    assert_equals(nodeB.localName, nodeA.localName);
+    assert_equals(nodeB.tagName, nodeA.tagName);
+    assert_not_equals(nodeB.attributes != nodeA.attributes);
+    assert_equals(nodeB.attributes.length, nodeA.attributes.length);
+    for (var i = 0, il = nodeA.attributes.length; i < il; ++i) {
+      assert_not_equals(nodeB.attributes[i], nodeA.attributes[i]);
+      assert_equals(nodeB.attributes[i].name, nodeA.attributes[i].name);
+      assert_equals(nodeB.attributes[i].prefix, nodeA.attributes[i].prefix);
+      assert_equals(nodeB.attributes[i].namespaceURI, nodeA.attributes[i].namespaceURI);
+      assert_equals(nodeB.attributes[i].value, nodeA.attributes[i].value);
+    }
+  }
+}
+
+function check_copy(orig, copy, type) {
+    assert_not_equals(orig, copy);
+    assert_equal_node(orig, copy);
+    assert_true(orig instanceof type, "Should be type");
+    assert_true(copy instanceof type, "Should be type");
+}
+
+function create_element_and_check(localName, type) {
+  test(function() {
+    var element = document.createElement(localName);
+    var copy = element.cloneNode();
+    check_copy(element, copy, type);
+  }, "createElement(" + localName + ")");
+}
+
+// test1: createElement
+test(function() {
+    create_element_and_check("a",         HTMLAnchorElement);
+    create_element_and_check("abbr",      HTMLElement);
+    create_element_and_check("acronym",   HTMLElement);
+    create_element_and_check("address",   HTMLElement);
+    create_element_and_check("applet",    HTMLAppletElement);
+    create_element_and_check("area",      HTMLAreaElement);
+    create_element_and_check("article",   HTMLElement);
+    create_element_and_check("aside",     HTMLElement);
+    create_element_and_check("audio",     HTMLAudioElement);
+    create_element_and_check("b",         HTMLElement);
+    create_element_and_check("base",      HTMLBaseElement);
+    create_element_and_check("bdi",       HTMLElement);
+    create_element_and_check("bdo",       HTMLElement);
+    create_element_and_check("bgsound",   HTMLElement);
+    create_element_and_check("big",       HTMLElement);
+    create_element_and_check("blockquote",HTMLElement);
+    create_element_and_check("body",      HTMLBodyElement);
+    create_element_and_check("br",        HTMLBRElement);
+    create_element_and_check("button",    HTMLButtonElement);
+    create_element_and_check("canvas",    HTMLCanvasElement);
+    create_element_and_check("caption",   HTMLTableCaptionElement);
+    create_element_and_check("center",    HTMLElement);
+    create_element_and_check("cite",      HTMLElement);
+    create_element_and_check("code",      HTMLElement);
+    create_element_and_check("col",       HTMLTableColElement);
+    create_element_and_check("colgroup",  HTMLTableColElement);
+    create_element_and_check("data",      HTMLDataElement);
+    create_element_and_check("datalist",  HTMLDataListElement);
+    create_element_and_check("dialog",    HTMLDialogElement);
+    create_element_and_check("dd",        HTMLElement);
+    create_element_and_check("del",       HTMLModElement);
+    create_element_and_check("details",   HTMLElement);
+    create_element_and_check("dfn",       HTMLElement);
+    create_element_and_check("dir",       HTMLDirectoryElement);
+    create_element_and_check("div",       HTMLDivElement);
+    create_element_and_check("dl",        HTMLDListElement);
+    create_element_and_check("dt",        HTMLElement);
+    create_element_and_check("embed",     HTMLEmbedElement);
+    create_element_and_check("fieldset",  HTMLFieldSetElement);
+    create_element_and_check("figcaption",HTMLElement);
+    create_element_and_check("figure",    HTMLElement);
+    create_element_and_check("font",      HTMLFontElement);
+    create_element_and_check("footer",    HTMLElement);
+    create_element_and_check("form",      HTMLFormElement);
+    create_element_and_check("frame",     HTMLFrameElement);
+    create_element_and_check("frameset",  HTMLFrameSetElement);
+    create_element_and_check("h1",        HTMLHeadingElement);
+    create_element_and_check("h2",        HTMLHeadingElement);
+    create_element_and_check("h3",        HTMLHeadingElement);
+    create_element_and_check("h4",        HTMLHeadingElement);
+    create_element_and_check("h5",        HTMLHeadingElement);
+    create_element_and_check("h6",        HTMLHeadingElement);
+    create_element_and_check("head",      HTMLHeadElement);
+    create_element_and_check("header",    HTMLElement);
+    create_element_and_check("hgroup",    HTMLElement);
+    create_element_and_check("hr",        HTMLHRElement);
+    create_element_and_check("html",      HTMLHtmlElement);
+    create_element_and_check("i",         HTMLElement);
+    create_element_and_check("iframe",    HTMLIFrameElement);
+    create_element_and_check("img",       HTMLImageElement);
+    create_element_and_check("input",     HTMLInputElement);
+    create_element_and_check("ins",       HTMLModElement);
+    create_element_and_check("isindex",   HTMLElement);
+    create_element_and_check("kbd",       HTMLElement);
+    create_element_and_check("label",     HTMLLabelElement);
+    create_element_and_check("legend",    HTMLLegendElement);
+    create_element_and_check("li",        HTMLLIElement);
+    create_element_and_check("link",      HTMLLinkElement);
+    create_element_and_check("main",      HTMLElement);
+    create_element_and_check("map",       HTMLMapElement);
+    create_element_and_check("mark",      HTMLElement);
+    create_element_and_check("marquee",   HTMLElement);
+    create_element_and_check("meta",      HTMLMetaElement);
+    create_element_and_check("meter",     HTMLMeterElement);
+    create_element_and_check("nav",       HTMLElement);
+    create_element_and_check("nobr",      HTMLElement);
+    create_element_and_check("noframes",  HTMLElement);
+    create_element_and_check("noscript",  HTMLElement);
+    create_element_and_check("object",    HTMLObjectElement);
+    create_element_and_check("ol",        HTMLOListElement);
+    create_element_and_check("optgroup",  HTMLOptGroupElement);
+    create_element_and_check("option",    HTMLOptionElement);
+    create_element_and_check("output",    HTMLOutputElement);
+    create_element_and_check("p",         HTMLParagraphElement);
+    create_element_and_check("param",     HTMLParamElement);
+    create_element_and_check("pre",       HTMLPreElement);
+    create_element_and_check("progress",  HTMLProgressElement);
+    create_element_and_check("q",         HTMLQuoteElement);
+    create_element_and_check("rp",        HTMLElement);
+    create_element_and_check("rt",        HTMLElement);
+    create_element_and_check("ruby",      HTMLElement);
+    create_element_and_check("s",         HTMLElement);
+    create_element_and_check("samp",      HTMLElement);
+    create_element_and_check("script",    HTMLScriptElement);
+    create_element_and_check("section",   HTMLElement);
+    create_element_and_check("select",    HTMLSelectElement);
+    create_element_and_check("small",     HTMLElement);
+    create_element_and_check("source",    HTMLSourceElement);
+    create_element_and_check("spacer",    HTMLElement);
+    create_element_and_check("span",      HTMLSpanElement);
+    create_element_and_check("strike",    HTMLElement);
+    create_element_and_check("style",     HTMLStyleElement);
+    create_element_and_check("sub",       HTMLElement);
+    create_element_and_check("summary",   HTMLElement);
+    create_element_and_check("sup",       HTMLElement);
+    create_element_and_check("table",     HTMLTableElement);
+    create_element_and_check("tbody",     HTMLTableSectionElement);
+    create_element_and_check("td",        HTMLTableCellElement);
+    create_element_and_check("template",  HTMLTemplateElement);
+    create_element_and_check("textarea",  HTMLTextAreaElement);
+    create_element_and_check("th",        HTMLTableCellElement);
+    create_element_and_check("time",      HTMLTimeElement);
+    create_element_and_check("title",     HTMLTitleElement);
+    create_element_and_check("tr",        HTMLTableRowElement);
+    create_element_and_check("tt",        HTMLElement);
+    create_element_and_check("track",     HTMLTrackElement);
+    create_element_and_check("u",         HTMLElement);
+    create_element_and_check("ul",        HTMLUListElement);
+    create_element_and_check("var",       HTMLElement);
+    create_element_and_check("video",     HTMLVideoElement);
+    create_element_and_check("unknown",   HTMLUnknownElement);
+    create_element_and_check("wbr",       HTMLElement);
+}, "");
+
+test(function() {
+    var fragment = document.createDocumentFragment();
+    var copy = fragment.cloneNode();
+    check_copy(fragment, copy, DocumentFragment);
+}, "createDocumentFragment");
+
+test(function() {
+    var text = document.createTextNode("hello world");
+    var copy = text.cloneNode();
+    check_copy(text, copy, Text);
+    assert_equals(text.data, copy.data);
+    assert_equals(text.wholeText, copy.wholeText);
+}, "createTextNode");
+
+test(function() {
+    var comment = document.createComment("a comment");
+    var copy = comment.cloneNode();
+    check_copy(comment, copy, Comment);
+    assert_equals(comment.data, copy.data);
+}, "createComment");
+
+test(function() {
+  var el = document.createElement("foo");
+  el.setAttribute("a", "b");
+  el.setAttribute("c", "d");
+  var c = el.cloneNode();
+  check_copy(el, c, Element);
+}, "createElement with attributes")
+
+test(function() {
+  var el = document.createElementNS("http://www.w3.org/1999/xhtml", "foo:div");
+  var c = el.cloneNode();
+  check_copy(el, c, HTMLDivElement);
+}, "createElementNS HTML")
+
+test(function() {
+  var el = document.createElementNS("http://www.example.com/", "foo:div");
+  var c = el.cloneNode();
+  check_copy(el, c, Element);
+}, "createElementNS non-HTML")
+
+test(function() {
+    var pi = document.createProcessingInstruction("target", "data");
+    var copy = pi.cloneNode();
+    check_copy(pi, copy, ProcessingInstruction);
+    assert_equals(pi.data, copy.data);
+    assert_equals(pi.target, pi.target);
+}, "createProcessingInstruction");
+
+test(function() {
+    var doctype = document.implementation.createDocumentType("html", "public", "system");
+    var copy = doctype.cloneNode();
+    check_copy(doctype, copy, DocumentType);
+    assert_equals(doctype.name, copy.name);
+    assert_equals(doctype.publicId, copy.publicId);
+    assert_equals(doctype.systemId, copy.systemId);
+}, "implementation.createDocumentType");
+
+test(function() {
+    var doc = document.implementation.createDocument(null, null);
+    var copy = doc.cloneNode();
+    check_copy(doc, copy, Document);
+    assert_equals(doc.contentType, copy.contentType);
+}, "implementation.createDocument");
+
+test(function() {
+    var html = document.implementation.createHTMLDocument("title");
+    var copy = html.cloneNode();
+    check_copy(html, copy, Document);
+    assert_equals(copy.title, "");
+}, "implementation.createHTMLDocument");
+
+test(function() {
+    var parent = document.createElement("div");
+    var child1 = document.createElement("div");
+    var child2 = document.createElement("div");
+    var grandChild = document.createElement("div");
+
+    child2.appendChild(grandChild);
+    parent.appendChild(child1);
+    parent.appendChild(child2);
+
+    var deep = true;
+    var copy = parent.cloneNode(deep);
+
+    check_copy(parent, copy, HTMLDivElement);
+    assert_equals(copy.childNodes.length, 2);
+
+    check_copy(child1, copy.childNodes[0], HTMLDivElement);
+    assert_equals(copy.childNodes[0].childNodes.length, 0);
+
+    check_copy(child2, copy.childNodes[1], HTMLDivElement);
+    assert_equals(copy.childNodes[1].childNodes.length, 1);
+    check_copy(grandChild, copy.childNodes[1].childNodes[0], HTMLDivElement);
+
+    deep = false;
+    copy = parent.cloneNode(deep);
+
+    check_copy(parent, copy, HTMLDivElement);
+    assert_equals(copy.childNodes.length, 0);
+}, "node with children");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-compareDocumentPosition.html b/testing/web-platform/tests/dom/nodes/Node-compareDocumentPosition.html
new file mode 100644
index 000000000..afae60aad
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-compareDocumentPosition.html
@@ -0,0 +1,87 @@
+<!doctype html>
+<title>Node.compareDocumentPosition() tests</title>
+<link rel=author title="Aryeh Gregor" href=ayg@aryeh.name>
+<div id=log></div>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=../common.js></script>
+<script>
+"use strict";
+
+testNodes.forEach(function(referenceName) {
+  var reference = eval(referenceName);
+  testNodes.forEach(function(otherName) {
+    var other = eval(otherName);
+    test(function() {
+      var result = reference.compareDocumentPosition(other);
+
+      // "If other and reference are the same object, return zero and
+      // terminate these steps."
+      if (other === reference) {
+        assert_equals(result, 0);
+        return;
+      }
+
+      // "If other and reference are not in the same tree, return the result of
+      // adding DOCUMENT_POSITION_DISCONNECTED,
+      // DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, and either
+      // DOCUMENT_POSITION_PRECEDING or DOCUMENT_POSITION_FOLLOWING, with the
+      // constraint that this is to be consistent, together and terminate these
+      // steps."
+      if (furthestAncestor(reference) !== furthestAncestor(other)) {
+        // TODO: Test that it's consistent.
+        assert_in_array(result, [Node.DOCUMENT_POSITION_DISCONNECTED +
+                                 Node.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC +
+                                 Node.DOCUMENT_POSITION_PRECEDING,
+                                 Node.DOCUMENT_POSITION_DISCONNECTED +
+                                 Node.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC +
+                                 Node.DOCUMENT_POSITION_FOLLOWING]);
+        return;
+      }
+
+      // "If other is an ancestor of reference, return the result of
+      // adding DOCUMENT_POSITION_CONTAINS to DOCUMENT_POSITION_PRECEDING
+      // and terminate these steps."
+      var ancestor = reference.parentNode;
+      while (ancestor && ancestor !== other) {
+        ancestor = ancestor.parentNode;
+      }
+      if (ancestor === other) {
+        assert_equals(result, Node.DOCUMENT_POSITION_CONTAINS +
+                              Node.DOCUMENT_POSITION_PRECEDING);
+        return;
+      }
+
+      // "If other is a descendant of reference, return the result of adding
+      // DOCUMENT_POSITION_CONTAINED_BY to DOCUMENT_POSITION_FOLLOWING and
+      // terminate these steps."
+      ancestor = other.parentNode;
+      while (ancestor && ancestor !== reference) {
+        ancestor = ancestor.parentNode;
+      }
+      if (ancestor === reference) {
+        assert_equals(result, Node.DOCUMENT_POSITION_CONTAINED_BY +
+                              Node.DOCUMENT_POSITION_FOLLOWING);
+        return;
+      }
+
+      // "If other is preceding reference return DOCUMENT_POSITION_PRECEDING
+      // and terminate these steps."
+      var prev = previousNode(reference);
+      while (prev && prev !== other) {
+        prev = previousNode(prev);
+      }
+      if (prev === other) {
+        assert_equals(result, Node.DOCUMENT_POSITION_PRECEDING);
+        return;
+      }
+
+      // "Return DOCUMENT_POSITION_FOLLOWING."
+      assert_equals(result, Node.DOCUMENT_POSITION_FOLLOWING);
+    }, referenceName + ".compareDocumentPosition(" + otherName + ")");
+  });
+});
+
+testDiv.parentNode.removeChild(testDiv);
+</script>
+<!-- vim: set expandtab tabstop=2 shiftwidth=2: -->
diff --git a/testing/web-platform/tests/dom/nodes/Node-constants.html b/testing/web-platform/tests/dom/nodes/Node-constants.html
new file mode 100644
index 000000000..33e7c10e7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-constants.html
@@ -0,0 +1,39 @@
+<!doctype html>
+<title>Node constants</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../constants.js"></script>
+<div id="log"></div>
+<script>
+var objects;
+setup(function() {
+  objects = [
+    [Node, "Node interface object"],
+    [Node.prototype, "Node prototype object"],
+    [document.createElement("foo"), "Element object"],
+    [document.createTextNode("bar"), "Text object"]
+  ]
+})
+testConstants(objects, [
+  ["ELEMENT_NODE", 1],
+  ["ATTRIBUTE_NODE", 2],
+  ["TEXT_NODE", 3],
+  ["CDATA_SECTION_NODE", 4],
+  ["ENTITY_REFERENCE_NODE", 5],
+  ["ENTITY_NODE", 6],
+  ["PROCESSING_INSTRUCTION_NODE", 7],
+  ["COMMENT_NODE", 8],
+  ["DOCUMENT_NODE", 9],
+  ["DOCUMENT_TYPE_NODE", 10],
+  ["DOCUMENT_FRAGMENT_NODE", 11],
+  ["NOTATION_NODE", 12]
+], "nodeType")
+testConstants(objects, [
+  ["DOCUMENT_POSITION_DISCONNECTED", 0x01],
+  ["DOCUMENT_POSITION_PRECEDING", 0x02],
+  ["DOCUMENT_POSITION_FOLLOWING", 0x04],
+  ["DOCUMENT_POSITION_CONTAINS", 0x08],
+  ["DOCUMENT_POSITION_CONTAINED_BY", 0x10],
+  ["DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC", 0x20]
+], "createDocumentPosition")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-contains-xml.xml b/testing/web-platform/tests/dom/nodes/Node-contains-xml.xml
new file mode 100644
index 000000000..b95b7ffd1
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-contains-xml.xml
@@ -0,0 +1,83 @@
+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Node.nodeName</title>
+<link rel="author" title="Olli Pettay" href="mailto:Olli@Pettay.fi"/>
+<link rel="author" title="Ms2ger" href="mailto:Ms2ger@gmail.com"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"/>
+<div id="test">
+  <input type="button" id="testbutton"/>
+  <a id="link">Link text</a>
+</div>
+<script>
+<![CDATA[
+test(function() {
+  assert_throws(new TypeError(), function() {
+    document.contains();
+  });
+  assert_throws(new TypeError(), function() {
+    document.contains(9);
+  });
+}, "Should throw TypeError if the arguments are wrong.");
+
+test(function() {
+  assert_equals(document.contains(null), false, "Document shouldn't contain null.");
+}, "contains(null) should be false");
+
+test(function() {
+  assert_equals(document.contains(document), true, "Document should contain itself!");
+  assert_equals(document.contains(document.createElement("foo")), false, "Document shouldn't contain element which is't in the document");
+  assert_equals(document.contains(document.createTextNode("foo")), false, "Document shouldn't contain text node which is't in the document");
+}, "document.contains");
+
+test(function() {
+  var tb = document.getElementById("testbutton");
+  assert_equals(tb.contains(tb), true, "Element should contain itself.")
+  assert_equals(document.contains(tb), true, "Document should contain element in it!");
+  assert_equals(document.documentElement.contains(tb), true, "Element should contain element in it!");
+}, "contains with a button");
+
+test(function() {
+  var link = document.getElementById("link");
+  var text = link.firstChild;
+  assert_equals(document.contains(text), true, "Document should contain a text node in it.");
+  assert_equals(link.contains(text), true, "Element should contain a text node in it.");
+  assert_equals(text.contains(text), true, "Text node should contain itself.");
+  assert_equals(text.contains(link), false, "text node shouldn't contain its parent.");
+}, "contains with a text node");
+
+test(function() {
+  var pi = document.createProcessingInstruction("adf", "asd");
+  assert_equals(pi.contains(document), false, "Processing instruction shouldn't contain document");
+  assert_equals(document.contains(pi), false, "Document shouldn't contain newly created processing instruction");
+  document.documentElement.appendChild(pi);
+  document.contains(pi, true, "Document should contain processing instruction");
+}, "contains with a processing instruction");
+
+test(function() {
+  if ("createContextualFragment" in document.createRange()) {
+    var df = document.createRange().createContextualFragment("<div>foo</div>");
+    assert_equals(df.contains(df.firstChild), true, "Document fragment should contain its child");
+    assert_equals(df.contains(df.firstChild.firstChild), true,
+       "Document fragment should contain its descendant");
+    assert_equals(df.contains(df), true, "Document fragment should contain itself.");
+  }
+}, "contains with a document fragment");
+
+test(function() {
+  var d = document.implementation.createHTMLDocument("");
+  assert_equals(document.contains(d), false,
+     "Document shouldn't contain another document.");
+  assert_equals(document.contains(d.createElement("div")), false,
+     "Document shouldn't contain an element from another document.");
+  assert_equals(document.contains(d.documentElement), false,
+     "Document shouldn't contain an element from another document.");
+}, "contaibs with another document");
+]]>
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Node-contains.html b/testing/web-platform/tests/dom/nodes/Node-contains.html
new file mode 100644
index 000000000..a3d644866
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-contains.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<title>Node.contains() tests</title>
+<link rel=author title="Aryeh Gregor" href=ayg@aryeh.name>
+<div id=log></div>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=../common.js></script>
+<script>
+"use strict";
+
+testNodes.forEach(function(referenceName) {
+  var reference = eval(referenceName);
+
+  test(function() {
+    assert_false(reference.contains(null));
+  }, referenceName + ".contains(null)");
+
+  testNodes.forEach(function(otherName) {
+    var other = eval(otherName);
+    test(function() {
+      var ancestor = other;
+      while (ancestor && ancestor !== reference) {
+        ancestor = ancestor.parentNode;
+      }
+      if (ancestor === reference) {
+        assert_true(reference.contains(other));
+      } else {
+        assert_false(reference.contains(other));
+      }
+    }, referenceName + ".compareDocumentPosition(" + otherName + ")");
+  });
+});
+
+testDiv.parentNode.removeChild(testDiv);
+</script>
+<!-- vim: set expandtab tabstop=2 shiftwidth=2: -->
diff --git a/testing/web-platform/tests/dom/nodes/Node-insertBefore.html b/testing/web-platform/tests/dom/nodes/Node-insertBefore.html
new file mode 100644
index 000000000..a9fc83b50
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-insertBefore.html
@@ -0,0 +1,306 @@
+<!DOCTYPE html>
+<title>Node.insertBefore</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function testLeafNode(nodeName, createNodeFunction) {
+  test(function() {
+    var node = createNodeFunction();
+    assert_throws(new TypeError(), function() { node.insertBefore(null, null) })
+  }, "Calling insertBefore with a non-Node first argument on a leaf node " + nodeName + " must throw TypeError.")
+  test(function() {
+    var node = createNodeFunction();
+    assert_throws("HIERARCHY_REQUEST_ERR", function() { node.insertBefore(document.createTextNode("fail"), null) })
+    // Would be step 2.
+    assert_throws("HIERARCHY_REQUEST_ERR", function() { node.insertBefore(node, null) })
+    // Would be step 3.
+    assert_throws("HIERARCHY_REQUEST_ERR", function() { node.insertBefore(node, document.createTextNode("child")) })
+  }, "Calling insertBefore an a leaf node " + nodeName + " must throw HIERARCHY_REQUEST_ERR.")
+}
+
+test(function() {
+  // WebIDL.
+  assert_throws(new TypeError(), function() { document.body.insertBefore(null, null) })
+  assert_throws(new TypeError(), function() { document.body.insertBefore(null, document.body.firstChild) })
+  assert_throws(new TypeError(), function() { document.body.insertBefore({'a':'b'}, document.body.firstChild) })
+}, "Calling insertBefore with a non-Node first argument must throw TypeError.")
+
+testLeafNode("DocumentType", function () { return document.doctype; } )
+testLeafNode("Text", function () { return document.createTextNode("Foo") })
+testLeafNode("Comment", function () { return document.createComment("Foo") })
+testLeafNode("ProcessingInstruction", function () { return document.createProcessingInstruction("foo", "bar") })
+
+test(function() {
+  // Step 2.
+  assert_throws("HIERARCHY_REQUEST_ERR", function() { document.body.insertBefore(document.body, document.getElementById("log")) })
+  assert_throws("HIERARCHY_REQUEST_ERR", function() { document.body.insertBefore(document.documentElement, document.getElementById("log")) })
+}, "Calling insertBefore with an inclusive ancestor of the context object must throw HIERARCHY_REQUEST_ERR.")
+
+// Step 3.
+test(function() {
+  var a = document.createElement("div");
+  var b = document.createElement("div");
+  var c = document.createElement("div");
+  assert_throws("NotFoundError", function() {
+    a.insertBefore(b, c);
+  });
+}, "Calling insertBefore with a reference child whose parent is not the context node must throw a NotFoundError.")
+
+// Step 4.1.
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var doc2 = document.implementation.createHTMLDocument("title2");
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(doc2, doc.documentElement);
+  });
+
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(doc.createTextNode("text"), doc.documentElement);
+  });
+}, "If the context node is a document, inserting a document or text node should throw a HierarchyRequestError.")
+
+// Step 4.2.1.
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  doc.removeChild(doc.documentElement);
+
+  var df = doc.createDocumentFragment();
+  df.appendChild(doc.createElement("a"));
+  df.appendChild(doc.createElement("b"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, null);
+  });
+
+  df = doc.createDocumentFragment();
+  df.appendChild(doc.createTextNode("text"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, null);
+  });
+
+  df = doc.createDocumentFragment();
+  df.appendChild(doc.createComment("comment"));
+  df.appendChild(doc.createTextNode("text"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, null);
+  });
+}, "If the context node is a document, appending a DocumentFragment that contains a text node or too many elements should throw a HierarchyRequestError.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  doc.removeChild(doc.documentElement);
+
+  var df = doc.createDocumentFragment();
+  df.appendChild(doc.createElement("a"));
+  df.appendChild(doc.createElement("b"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, doc.firstChild);
+  });
+
+  df = doc.createDocumentFragment();
+  df.appendChild(doc.createTextNode("text"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, doc.firstChild);
+  });
+
+  df = doc.createDocumentFragment();
+  df.appendChild(doc.createComment("comment"));
+  df.appendChild(doc.createTextNode("text"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, doc.firstChild);
+  });
+}, "If the context node is a document, inserting a DocumentFragment that contains a text node or too many elements should throw a HierarchyRequestError.")
+
+// Step 4.2.2.
+test(function() {
+  // The context node has an element child.
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.appendChild(doc.createComment("foo"));
+  assert_array_equals(doc.childNodes, [doc.doctype, doc.documentElement, comment]);
+
+  var df = doc.createDocumentFragment();
+  df.appendChild(doc.createElement("a"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, doc.doctype);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, doc.documentElement);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, comment);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, null);
+  });
+}, "If the context node is a document, inserting a DocumentFragment with an element if there already is an element child should throw a HierarchyRequestError.")
+test(function() {
+  // /child/ is a doctype.
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.insertBefore(doc.createComment("foo"), doc.firstChild);
+  doc.removeChild(doc.documentElement);
+  assert_array_equals(doc.childNodes, [comment, doc.doctype]);
+
+  var df = doc.createDocumentFragment();
+  df.appendChild(doc.createElement("a"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, doc.doctype);
+  });
+}, "If the context node is a document and a doctype is following the reference child, inserting a DocumentFragment with an element should throw a HierarchyRequestError.")
+test(function() {
+  // /child/ is not null and a doctype is following /child/.
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.insertBefore(doc.createComment("foo"), doc.firstChild);
+  doc.removeChild(doc.documentElement);
+  assert_array_equals(doc.childNodes, [comment, doc.doctype]);
+
+  var df = doc.createDocumentFragment();
+  df.appendChild(doc.createElement("a"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(df, comment);
+  });
+}, "If the context node is a document, inserting a DocumentFragment with an element before the doctype should throw a HierarchyRequestError.")
+
+// Step 4.3.
+test(function() {
+  // The context node has an element child.
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.appendChild(doc.createComment("foo"));
+  assert_array_equals(doc.childNodes, [doc.doctype, doc.documentElement, comment]);
+
+  var a = doc.createElement("a");
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(a, doc.doctype);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(a, doc.documentElement);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(a, comment);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(a, null);
+  });
+}, "If the context node is a document, inserting an element if there already is an element child should throw a HierarchyRequestError.")
+test(function() {
+  // /child/ is a doctype.
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.insertBefore(doc.createComment("foo"), doc.firstChild);
+  doc.removeChild(doc.documentElement);
+  assert_array_equals(doc.childNodes, [comment, doc.doctype]);
+
+  var a = doc.createElement("a");
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(a, doc.doctype);
+  });
+}, "If the context node is a document, inserting an element before the doctype should throw a HierarchyRequestError.")
+test(function() {
+  // /child/ is not null and a doctype is following /child/.
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.insertBefore(doc.createComment("foo"), doc.firstChild);
+  doc.removeChild(doc.documentElement);
+  assert_array_equals(doc.childNodes, [comment, doc.doctype]);
+
+  var a = doc.createElement("a");
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(a, comment);
+  });
+}, "If the context node is a document and a doctype is following the reference child, inserting an element should throw a HierarchyRequestError.")
+
+// Step 4.4.
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.insertBefore(doc.createComment("foo"), doc.firstChild);
+  assert_array_equals(doc.childNodes, [comment, doc.doctype, doc.documentElement]);
+
+  var doctype = document.implementation.createDocumentType("html", "", "");
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(doctype, comment);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(doctype, doc.doctype);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(doctype, doc.documentElement);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(doctype, null);
+  });
+}, "If the context node is a document, inserting a doctype if there already is a doctype child should throw a HierarchyRequestError.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.appendChild(doc.createComment("foo"));
+  doc.removeChild(doc.doctype);
+  assert_array_equals(doc.childNodes, [doc.documentElement, comment]);
+
+  var doctype = document.implementation.createDocumentType("html", "", "");
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(doctype, comment);
+  });
+}, "If the context node is a document, inserting a doctype after the document element should throw a HierarchyRequestError.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.appendChild(doc.createComment("foo"));
+  doc.removeChild(doc.doctype);
+  assert_array_equals(doc.childNodes, [doc.documentElement, comment]);
+
+  var doctype = document.implementation.createDocumentType("html", "", "");
+  assert_throws("HierarchyRequestError", function() {
+    doc.insertBefore(doctype, null);
+  });
+}, "If the context node is a document with and element child, appending a doctype should throw a HierarchyRequestError.")
+
+// Step 5.
+test(function() {
+  var df = document.createDocumentFragment();
+  var a = df.appendChild(document.createElement("a"));
+
+  var doc = document.implementation.createHTMLDocument("title");
+  assert_throws("HierarchyRequestError", function() {
+    df.insertBefore(doc, a);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    df.insertBefore(doc, null);
+  });
+
+  var doctype = document.implementation.createDocumentType("html", "", "");
+  assert_throws("HierarchyRequestError", function() {
+    df.insertBefore(doctype, a);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    df.insertBefore(doctype, null);
+  });
+}, "If the context node is a DocumentFragment, inserting a document or a doctype should throw a HierarchyRequestError.")
+test(function() {
+  var el = document.createElement("div");
+  var a = el.appendChild(document.createElement("a"));
+
+  var doc = document.implementation.createHTMLDocument("title");
+  assert_throws("HierarchyRequestError", function() {
+    el.insertBefore(doc, a);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    el.insertBefore(doc, null);
+  });
+
+  var doctype = document.implementation.createDocumentType("html", "", "");
+  assert_throws("HierarchyRequestError", function() {
+    el.insertBefore(doctype, a);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    el.insertBefore(doctype, null);
+  });
+}, "If the context node is an element, inserting a document or a doctype should throw a HierarchyRequestError.")
+
+// Step 7.
+test(function() {
+  var a = document.createElement("div");
+  var b = document.createElement("div");
+  var c = document.createElement("div");
+  a.appendChild(b);
+  a.appendChild(c);
+  assert_array_equals(a.childNodes, [b, c]);
+  assert_equals(a.insertBefore(b, b), b);
+  assert_array_equals(a.childNodes, [b, c]);
+  assert_equals(a.insertBefore(c, c), c);
+  assert_array_equals(a.childNodes, [b, c]);
+}, "Inserting a node before itself should not move the node");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-isConnected.html b/testing/web-platform/tests/dom/nodes/Node-isConnected.html
new file mode 100644
index 000000000..da0b460de
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-isConnected.html
@@ -0,0 +1,95 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<head>
+<title>Node.prototype.isConnected</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-isconnected">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<script>
+
+"use strict";
+
+test(function() {
+  var nodes = [document.createElement("div"),
+               document.createElement("div"),
+               document.createElement("div")];
+  checkNodes([], nodes);
+
+  // Append nodes[0].
+  document.body.appendChild(nodes[0]);
+  checkNodes([nodes[0]],
+             [nodes[1], nodes[2]]);
+
+  // Append nodes[1] and nodes[2] together.
+  nodes[1].appendChild(nodes[2]);
+  checkNodes([nodes[0]],
+             [nodes[1], nodes[2]]);
+
+  nodes[0].appendChild(nodes[1]);
+  checkNodes(nodes, []);
+
+  // Remove nodes[2].
+  nodes[2].remove();
+  checkNodes([nodes[0], nodes[1]],
+             [nodes[2]]);
+
+  // Remove nodes[0] and nodes[1] together.
+  nodes[0].remove();
+  checkNodes([], nodes);
+}, "Test with ordinary child nodes");
+
+test(function() {
+  var nodes = [document.createElement("iframe"),
+               document.createElement("iframe"),
+               document.createElement("iframe"),
+               document.createElement("iframe"),
+               document.createElement("div")];
+  var frames = [nodes[0],
+                nodes[1],
+                nodes[2],
+                nodes[3]];
+  checkNodes([], nodes);
+
+  // Since we cannot append anything to the contentWindow of an iframe before it
+  // is appended to the main DOM tree, we append the iframes one after another.
+  document.body.appendChild(nodes[0]);
+  checkNodes([nodes[0]],
+             [nodes[1], nodes[2], nodes[3], nodes[4]]);
+
+  frames[0].contentDocument.body.appendChild(nodes[1]);
+  checkNodes([nodes[0], nodes[1]],
+             [nodes[2], nodes[3], nodes[4]]);
+
+  frames[1].contentDocument.body.appendChild(nodes[2]);
+  checkNodes([nodes[0], nodes[1], nodes[2]],
+             [nodes[3], nodes[4]]);
+
+  frames[2].contentDocument.body.appendChild(nodes[3]);
+  checkNodes([nodes[0], nodes[1], nodes[2], nodes[3]],
+             [nodes[4]]);
+
+  frames[3].contentDocument.body.appendChild(nodes[4]);
+  checkNodes(nodes, []);
+
+  frames[3].remove();
+  // Since node[4] is still under the doument of frame[3], it's still connected.
+  checkNodes([nodes[0], nodes[1], nodes[2], nodes[4]],
+             [nodes[3]]);
+
+  frames[0].remove();
+  // Since node[1] and node[2] are still under the doument of frame[0], they are
+  // still connected.
+  checkNodes([nodes[1], nodes[2], nodes[4]],
+             [nodes[0], nodes[3]]);
+}, "Test with iframes");
+
+// This helper function is used to check whether nodes should be connected.
+function checkNodes(aConnectedNodes, aDisconnectedNodes) {
+  aConnectedNodes.forEach(node => assert_true(node.isConnected));
+  aDisconnectedNodes.forEach(node => assert_false(node.isConnected));
+}
+
+</script>
+</body>
diff --git a/testing/web-platform/tests/dom/nodes/Node-isEqualNode-iframe1.xml b/testing/web-platform/tests/dom/nodes/Node-isEqualNode-iframe1.xml
new file mode 100644
index 000000000..8077e73c2
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-isEqualNode-iframe1.xml
@@ -0,0 +1 @@
+<!DOCTYPE foo [ <!ELEMENT foo (#PCDATA)> ]><foo/>
diff --git a/testing/web-platform/tests/dom/nodes/Node-isEqualNode-iframe2.xml b/testing/web-platform/tests/dom/nodes/Node-isEqualNode-iframe2.xml
new file mode 100644
index 000000000..eacc9d17a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-isEqualNode-iframe2.xml
@@ -0,0 +1 @@
+<!DOCTYPE foo [ <!ELEMENT foo EMPTY> ]><foo/>
diff --git a/testing/web-platform/tests/dom/nodes/Node-isEqualNode-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Node-isEqualNode-xhtml.xhtml
new file mode 100644
index 000000000..3170643d2
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-isEqualNode-xhtml.xhtml
@@ -0,0 +1,84 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Node.isEqualNode</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"/>
+<script>
+function testNullHandling(node) {
+  test(function() {
+    assert_false(node.isEqualNode(null))
+    assert_false(node.isEqualNode(undefined))
+  })
+}
+[
+  document.createElement("foo"),
+  document.createTextNode("foo"),
+  document.createProcessingInstruction("foo", "bar"),
+  document.createComment("foo"),
+  document,
+  document.implementation.createDocumentType("html", "", ""),
+  document.createDocumentFragment()
+].forEach(testNullHandling)
+
+test(function() {
+  var a = document.createElement("foo")
+  a.setAttribute("a", "bar")
+  a.setAttribute("b", "baz")
+  var b = document.createElement("foo")
+  b.setAttribute("b", "baz")
+  b.setAttribute("a", "bar")
+  assert_true(a.isEqualNode(b))
+}, "isEqualNode should return true when the attributes are in a different order")
+
+test(function() {
+  var a = document.createElementNS("ns", "prefix:foo")
+  var b = document.createElementNS("ns", "prefix:foo")
+  assert_true(a.isEqualNode(b))
+}, "isEqualNode should return true if elements have same namespace, prefix, and local name")
+
+test(function() {
+  var a = document.createElementNS("ns1", "prefix:foo")
+  var b = document.createElementNS("ns2", "prefix:foo")
+  assert_false(a.isEqualNode(b))
+}, "isEqualNode should return false if elements have different namespace")
+
+test(function() {
+  var a = document.createElementNS("ns", "prefix1:foo")
+  var b = document.createElementNS("ns", "prefix2:foo")
+  assert_false(a.isEqualNode(b))
+}, "isEqualNode should return false if elements have different prefix")
+
+test(function() {
+  var a = document.createElementNS("ns", "prefix:foo1")
+  var b = document.createElementNS("ns", "prefix:foo2")
+  assert_false(a.isEqualNode(b))
+}, "isEqualNode should return false if elements have different local name")
+
+test(function() {
+  var a = document.createElement("foo")
+  a.setAttributeNS("ns", "x:a", "bar")
+  var b = document.createElement("foo")
+  b.setAttributeNS("ns", "y:a", "bar")
+  assert_true(a.isEqualNode(b))
+}, "isEqualNode should return true when the attributes have different prefixes")
+var internalSubset = async_test("isEqualNode should return true when only the internal subsets of DocumentTypes differ.")
+var wait = 2;
+function iframeLoaded() {
+  if (!--wait) {
+    internalSubset.step(function() {
+      var doc1 = document.getElementById("subset1").contentDocument
+      var doc2 = document.getElementById("subset2").contentDocument
+      assert_true(doc1.doctype.isEqualNode(doc2.doctype), "doc1.doctype.isEqualNode(doc2.doctype)")
+      assert_true(doc1.isEqualNode(doc2), "doc1.isEqualNode(doc2)")
+    })
+    internalSubset.done()
+  }
+}
+</script>
+<iframe id="subset1" onload="iframeLoaded()" src="Node-isEqualNode-iframe1.xml" />
+<iframe id="subset2" onload="iframeLoaded()" src="Node-isEqualNode-iframe2.xml" />
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Node-isEqualNode.html b/testing/web-platform/tests/dom/nodes/Node-isEqualNode.html
new file mode 100644
index 000000000..9ff4c5b03
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-isEqualNode.html
@@ -0,0 +1,161 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Node.prototype.isEqualNode</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-isequalnode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<script>
+"use strict";
+
+test(function() {
+
+  var doctype1 = document.implementation.createDocumentType("qualifiedName", "publicId", "systemId");
+  var doctype2 = document.implementation.createDocumentType("qualifiedName", "publicId", "systemId");
+  var doctype3 = document.implementation.createDocumentType("qualifiedName2", "publicId", "systemId");
+  var doctype4 = document.implementation.createDocumentType("qualifiedName", "publicId2", "systemId");
+  var doctype5 = document.implementation.createDocumentType("qualifiedName", "publicId", "systemId3");
+
+  assert_true(doctype1.isEqualNode(doctype1), "self-comparison");
+  assert_true(doctype1.isEqualNode(doctype2), "same properties");
+  assert_false(doctype1.isEqualNode(doctype3), "different name");
+  assert_false(doctype1.isEqualNode(doctype4), "different public ID");
+  assert_false(doctype1.isEqualNode(doctype5), "different system ID");
+
+}, "doctypes should be compared on name, public ID, and system ID");
+
+test(function() {
+
+  var element1 = document.createElementNS("namespace", "prefix:localName");
+  var element2 = document.createElementNS("namespace", "prefix:localName");
+  var element3 = document.createElementNS("namespace2", "prefix:localName");
+  var element4 = document.createElementNS("namespace", "prefix2:localName");
+  var element5 = document.createElementNS("namespace", "prefix:localName2");
+
+  var element6 = document.createElementNS("namespace", "prefix:localName");
+  element6.setAttribute("foo", "bar");
+
+  assert_true(element1.isEqualNode(element1), "self-comparison");
+  assert_true(element1.isEqualNode(element2), "same properties");
+  assert_false(element1.isEqualNode(element3), "different namespace");
+  assert_false(element1.isEqualNode(element4), "different prefix");
+  assert_false(element1.isEqualNode(element5), "different local name");
+  assert_false(element1.isEqualNode(element6), "different number of attributes");
+
+}, "elements should be compared on namespace, namespace prefix, local name, and number of attributes");
+
+test(function() {
+
+  var element1 = document.createElement("element");
+  element1.setAttributeNS("namespace", "prefix:localName", "value");
+
+  var element2 = document.createElement("element");
+  element2.setAttributeNS("namespace", "prefix:localName", "value");
+
+  var element3 = document.createElement("element");
+  element3.setAttributeNS("namespace2", "prefix:localName", "value");
+
+  var element4 = document.createElement("element");
+  element4.setAttributeNS("namespace", "prefix2:localName", "value");
+
+  var element5 = document.createElement("element");
+  element5.setAttributeNS("namespace", "prefix:localName2", "value");
+
+  var element6 = document.createElement("element");
+  element6.setAttributeNS("namespace", "prefix:localName", "value2");
+
+  assert_true(element1.isEqualNode(element1), "self-comparison");
+  assert_true(element1.isEqualNode(element2), "attribute with same properties");
+  assert_false(element1.isEqualNode(element3), "attribute with different namespace");
+  assert_true(element1.isEqualNode(element4), "attribute with different prefix");
+  assert_false(element1.isEqualNode(element5), "attribute with different local name");
+  assert_false(element1.isEqualNode(element6), "attribute with different value");
+
+}, "elements should be compared on attribute namespace, local name, and value");
+
+test(function() {
+
+  var pi1 = document.createProcessingInstruction("target", "data");
+  var pi2 = document.createProcessingInstruction("target", "data");
+  var pi3 = document.createProcessingInstruction("target2", "data");
+  var pi4 = document.createProcessingInstruction("target", "data2");
+
+  assert_true(pi1.isEqualNode(pi1), "self-comparison");
+  assert_true(pi1.isEqualNode(pi2), "same properties");
+  assert_false(pi1.isEqualNode(pi3), "different target");
+  assert_false(pi1.isEqualNode(pi4), "different data");
+
+}, "processing instructions should be compared on target and data");
+
+test(function() {
+
+  var text1 = document.createTextNode("data");
+  var text2 = document.createTextNode("data");
+  var text3 = document.createTextNode("data2");
+
+  assert_true(text1.isEqualNode(text1), "self-comparison");
+  assert_true(text1.isEqualNode(text2), "same properties");
+  assert_false(text1.isEqualNode(text3), "different data");
+
+}, "text nodes should be compared on data");
+
+test(function() {
+
+  var comment1 = document.createComment("data");
+  var comment2 = document.createComment("data");
+  var comment3 = document.createComment("data2");
+
+  assert_true(comment1.isEqualNode(comment1), "self-comparison");
+  assert_true(comment1.isEqualNode(comment2), "same properties");
+  assert_false(comment1.isEqualNode(comment3), "different data");
+
+}, "comments should be compared on data");
+
+test(function() {
+
+  var documentFragment1 = document.createDocumentFragment();
+  var documentFragment2 = document.createDocumentFragment();
+
+  assert_true(documentFragment1.isEqualNode(documentFragment1), "self-comparison");
+  assert_true(documentFragment1.isEqualNode(documentFragment2), "same properties");
+
+}, "document fragments should not be compared based on properties");
+
+test(function() {
+
+  var document1 = document.implementation.createDocument("", "");
+  var document2 = document.implementation.createDocument("", "");
+
+  assert_true(document1.isEqualNode(document1), "self-comparison");
+  assert_true(document1.isEqualNode(document2), "another empty XML document");
+
+  var htmlDoctype = document.implementation.createDocumentType("html", "", "");
+  var document3 = document.implementation.createDocument("http://www.w3.org/1999/xhtml", "html", htmlDoctype);
+  document3.documentElement.appendChild(document3.createElement("head"));
+  document3.documentElement.appendChild(document3.createElement("body"));
+  var document4 = document.implementation.createHTMLDocument();
+  assert_true(document3.isEqualNode(document4), "default HTML documents, created different ways");
+
+}, "documents should not be compared based on properties");
+
+test(function() {
+
+  testDeepEquality(function() { return document.createElement("foo") });
+  testDeepEquality(function() { return document.createDocumentFragment() });
+  testDeepEquality(function() { return document.implementation.createDocument("", "") });
+  testDeepEquality(function() { return document.implementation.createHTMLDocument() });
+
+  function testDeepEquality(parentFactory) {
+    // Some ad-hoc tests of deep equality
+
+    var parentA = parentFactory();
+    var parentB = parentFactory();
+
+    parentA.appendChild(document.createComment("data"));
+    assert_false(parentA.isEqualNode(parentB));
+    parentB.appendChild(document.createComment("data"));
+    assert_true(parentA.isEqualNode(parentB));
+  }
+
+}, "node equality testing should test descendant equality too");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-isSameNode.html b/testing/web-platform/tests/dom/nodes/Node-isSameNode.html
new file mode 100644
index 000000000..884fdd504
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-isSameNode.html
@@ -0,0 +1,100 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Node.prototype.isSameNode</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-issamenode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+"use strict";
+
+test(function() {
+
+  var doctype1 = document.implementation.createDocumentType("qualifiedName", "publicId", "systemId");
+  var doctype2 = document.implementation.createDocumentType("qualifiedName", "publicId", "systemId");
+
+  assert_true(doctype1.isSameNode(doctype1), "self-comparison");
+  assert_false(doctype1.isSameNode(doctype2), "same properties");
+  assert_false(doctype1.isSameNode(null), "with null other node");
+}, "doctypes should be comapred on reference");
+
+test(function() {
+
+  var element1 = document.createElementNS("namespace", "prefix:localName");
+  var element2 = document.createElementNS("namespace", "prefix:localName");
+
+  assert_true(element1.isSameNode(element1), "self-comparison");
+  assert_false(element1.isSameNode(element2), "same properties");
+  assert_false(element1.isSameNode(null), "with null other node");
+
+}, "elements should be compared on reference");
+
+test(function() {
+
+  var element1 = document.createElement("element");
+  element1.setAttributeNS("namespace", "prefix:localName", "value");
+
+  var element2 = document.createElement("element");
+  element2.setAttributeNS("namespace", "prefix:localName", "value");
+
+  assert_true(element1.isSameNode(element1), "self-comparison");
+  assert_false(element1.isSameNode(element2), "same properties");
+  assert_false(element1.isSameNode(null), "with null other node");
+
+}, "elements should be compared on reference");
+
+test(function() {
+
+  var pi1 = document.createProcessingInstruction("target", "data");
+  var pi2 = document.createProcessingInstruction("target", "data");
+
+  assert_true(pi1.isSameNode(pi1), "self-comparison");
+  assert_false(pi1.isSameNode(pi2), "different target");
+  assert_false(pi1.isSameNode(null), "with null other node");
+
+}, "processing instructions should be compared on reference");
+
+test(function() {
+
+  var text1 = document.createTextNode("data");
+  var text2 = document.createTextNode("data");
+
+  assert_true(text1.isSameNode(text1), "self-comparison");
+  assert_false(text1.isSameNode(text2), "same properties");
+  assert_false(text1.isSameNode(null), "with null other node");
+
+}, "text nodes should be compared on reference");
+
+test(function() {
+
+  var comment1 = document.createComment("data");
+  var comment2 = document.createComment("data");
+
+  assert_true(comment1.isSameNode(comment1), "self-comparison");
+  assert_false(comment1.isSameNode(comment2), "same properties");
+  assert_false(comment1.isSameNode(null), "with null other node");
+
+}, "comments should be compared on reference");
+
+test(function() {
+
+  var documentFragment1 = document.createDocumentFragment();
+  var documentFragment2 = document.createDocumentFragment();
+
+  assert_true(documentFragment1.isSameNode(documentFragment1), "self-comparison");
+  assert_false(documentFragment1.isSameNode(documentFragment2), "same properties");
+  assert_false(documentFragment1.isSameNode(null), "with null other node");
+
+}, "document fragments should be compared on reference");
+
+test(function() {
+
+  var document1 = document.implementation.createDocument("", "");
+  var document2 = document.implementation.createDocument("", "");
+
+  assert_true(document1.isSameNode(document1), "self-comparison");
+  assert_false(document1.isSameNode(document2), "another empty XML document");
+  assert_false(document1.isSameNode(null), "with null other node");
+
+}, "documents should not be compared on reference");
+
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-lookupNamespaceURI.html b/testing/web-platform/tests/dom/nodes/Node-lookupNamespaceURI.html
new file mode 100644
index 000000000..45b6c0fbb
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-lookupNamespaceURI.html
@@ -0,0 +1,116 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>LookupNamespaceURI and IsDefaultNamespace tests</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+</head>
+<body>
+<h1>LookupNamespaceURI and IsDefaultNamespace</h1>
+<div id="log"/>
+<script>
+function lookupNamespaceURI(node, prefix, expected, name) {
+  test(function() {
+    assert_equals(node.lookupNamespaceURI(prefix), expected);
+  }, name);
+}
+
+function isDefaultNamespace(node, namespace, expected, name) {
+  test(function() {
+    assert_equals(node.isDefaultNamespace(namespace), expected);
+  }, name);
+}
+
+
+var frag = document.createDocumentFragment();
+lookupNamespaceURI(frag, null, null, 'DocumentFragment should have null namespace, prefix null');
+lookupNamespaceURI(frag, '', null, 'DocumentFragment should have null namespace, prefix ""');
+lookupNamespaceURI(frag, 'foo', null, 'DocumentFragment should have null namespace, prefix "foo"');
+lookupNamespaceURI(frag, 'xmlns', null, 'DocumentFragment should have null namespace, prefix "xmlns"');
+isDefaultNamespace(frag, null, true, 'DocumentFragment is in default namespace, prefix null');
+isDefaultNamespace(frag, '', true, 'DocumentFragment is in default namespace, prefix ""');
+isDefaultNamespace(frag, 'foo', false, 'DocumentFragment is in default namespace, prefix "foo"');
+isDefaultNamespace(frag, 'xmlns', false, 'DocumentFragment is in default namespace, prefix "xmlns"');
+
+
+
+var fooElem = document.createElementNS('fooNamespace', 'prefix:elem');
+fooElem.setAttribute('bar', 'value');
+
+lookupNamespaceURI(fooElem, null, null, 'Element should have null namespace, prefix null');
+lookupNamespaceURI(fooElem, '', null, 'Element should have null namespace, prefix ""');
+lookupNamespaceURI(fooElem, 'fooNamespace', null, 'Element should not have namespace matching prefix with namespaceURI value');
+lookupNamespaceURI(fooElem, 'xmlns', null, 'Element should not have XMLNS namespace');
+lookupNamespaceURI(fooElem, 'prefix', 'fooNamespace', 'Element has namespace URI matching prefix');
+isDefaultNamespace(fooElem, null, true, 'Empty namespace is not default, prefix null');
+isDefaultNamespace(fooElem, '', true, 'Empty namespace is not default, prefix ""');
+isDefaultNamespace(fooElem, 'fooNamespace', false, 'fooNamespace is not default');
+isDefaultNamespace(fooElem, 'http://www.w3.org/2000/xmlns/', false, 'xmlns namespace is not default');
+
+fooElem.setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:bar', 'barURI');
+fooElem.setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns', 'bazURI');
+
+lookupNamespaceURI(fooElem, null, 'bazURI', 'Element should have baz namespace, prefix null');
+lookupNamespaceURI(fooElem, '', 'bazURI', 'Element should have baz namespace, prefix ""');
+lookupNamespaceURI(fooElem, 'xmlns', null, 'Element does not has namespace with xlmns prefix');
+lookupNamespaceURI(fooElem, 'bar', 'barURI', 'Element has bar namespace');
+
+isDefaultNamespace(fooElem, null, false, 'Empty namespace is not default on fooElem, prefix null');
+isDefaultNamespace(fooElem, '', false, 'Empty namespace is not default on fooElem, prefix ""');
+isDefaultNamespace(fooElem, 'barURI', false, 'bar namespace is not default');
+isDefaultNamespace(fooElem, 'bazURI', true, 'baz namespace is default');
+
+var comment = document.createComment('comment');
+fooElem.appendChild(comment);
+
+lookupNamespaceURI(comment, null, 'bazURI', 'Comment should inherit baz namespace');
+lookupNamespaceURI(comment, '', 'bazURI', 'Comment should inherit  baz namespace');
+lookupNamespaceURI(comment, 'prefix', 'fooNamespace', 'Comment should inherit namespace URI matching prefix');
+lookupNamespaceURI(comment, 'bar', 'barURI', 'Comment should inherit bar namespace');
+
+isDefaultNamespace(comment, null, false, 'For comment, empty namespace is not default, prefix null');
+isDefaultNamespace(comment, '', false, 'For comment, empty namespace is not default, prefix ""');
+isDefaultNamespace(comment, 'fooNamespace', false, 'For comment, fooNamespace is not default');
+isDefaultNamespace(comment, 'http://www.w3.org/2000/xmlns/', false, 'For comment, xmlns namespace is not default');
+isDefaultNamespace(comment, 'barURI', false, 'For comment, inherited bar namespace is not default');
+isDefaultNamespace(comment, 'bazURI', true, 'For comment, inherited baz namespace is default');
+
+var fooChild = document.createElementNS('childNamespace', 'childElem');
+fooElem.appendChild(fooChild);
+
+lookupNamespaceURI(fooChild, null, 'childNamespace', 'Child element should inherit baz namespace');
+lookupNamespaceURI(fooChild, '', 'childNamespace', 'Child element should have null namespace');
+lookupNamespaceURI(fooChild, 'xmlns', null, 'Child element should not have XMLNS namespace');
+lookupNamespaceURI(fooChild, 'prefix', 'fooNamespace', 'Child element has namespace URI matching prefix');
+
+isDefaultNamespace(fooChild, null, false, 'Empty namespace is not default for child, prefix null');
+isDefaultNamespace(fooChild, '', false, 'Empty namespace is not default for child, prefix ""');
+isDefaultNamespace(fooChild, 'fooNamespace', false, 'fooNamespace is not default for child');
+isDefaultNamespace(fooChild, 'http://www.w3.org/2000/xmlns/', false, 'xmlns namespace is not default for child');
+isDefaultNamespace(fooChild, 'barURI', false, 'bar namespace is not default for child');
+isDefaultNamespace(fooChild, 'bazURI', false, 'baz namespace is default for child');
+isDefaultNamespace(fooChild, 'childNamespace', true, 'childNamespace is default for child');
+
+document.documentElement.setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:bar', 'barURI');
+document.documentElement.setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns', 'bazURI');
+
+lookupNamespaceURI(document, null, 'http://www.w3.org/1999/xhtml', 'Document should have xhtml namespace, prefix null');
+lookupNamespaceURI(document, '', 'http://www.w3.org/1999/xhtml', 'Document should have xhtml namespace, prefix ""');
+lookupNamespaceURI(document, 'prefix', null, 'Document has no namespace URI matching prefix');
+lookupNamespaceURI(document, 'bar', 'barURI', 'Document has bar namespace');
+
+isDefaultNamespace(document, null, false, 'For document, empty namespace is not default, prefix null');
+isDefaultNamespace(document, '', false, 'For document, empty namespace is not default, prefix ""');
+isDefaultNamespace(document, 'fooNamespace', false, 'For document, fooNamespace is not default');
+isDefaultNamespace(document, 'http://www.w3.org/2000/xmlns/', false, 'For document, xmlns namespace is not default');
+isDefaultNamespace(document, 'barURI', false, 'For document, bar namespace is not default');
+isDefaultNamespace(document, 'bazURI', false, 'For document, baz namespace is not default');
+isDefaultNamespace(document, 'http://www.w3.org/1999/xhtml', true, 'For document, xhtml namespace is default');
+
+var comment = document.createComment('comment');
+document.appendChild(comment);
+lookupNamespaceURI(comment, 'bar', null, 'Comment does not have bar namespace');
+
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Node-lookupPrefix.xhtml b/testing/web-platform/tests/dom/nodes/Node-lookupPrefix.xhtml
new file mode 100644
index 000000000..50a487c58
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-lookupPrefix.xhtml
@@ -0,0 +1,31 @@
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:x="test">
+<head>
+<title>Node.lookupPrefix</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body xmlns:s="test">
+<div id="log"/>
+<x xmlns:t="test"><!--comment--><?test test?>TEST<x/></x>
+<script>
+function lookupPrefix(node, ns, prefix) {
+  test(function() {
+    assert_equals(node.lookupPrefix(ns), prefix)
+  })
+}
+var x = document.getElementsByTagName("x")[0];
+lookupPrefix(document, "test", "x") // XXX add test for when there is no documentElement
+lookupPrefix(document, null, null)
+lookupPrefix(x, "http://www.w3.org/1999/xhtml", null)
+lookupPrefix(x, "something", null)
+lookupPrefix(x, null, null)
+lookupPrefix(x, "test", "t")
+lookupPrefix(x.parentNode, "test", "s")
+lookupPrefix(x.firstChild, "test", "t")
+lookupPrefix(x.childNodes[1], "test", "t")
+lookupPrefix(x.childNodes[2], "test", "t")
+lookupPrefix(x.lastChild, "test", "t")
+x.parentNode.removeChild(x)
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Node-nodeName-xhtml.xhtml b/testing/web-platform/tests/dom/nodes/Node-nodeName-xhtml.xhtml
new file mode 100644
index 000000000..bc478af8b
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-nodeName-xhtml.xhtml
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Node.nodeName</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"/>
+<script>
+test(function() {
+  var HTMLNS = "http://www.w3.org/1999/xhtml",
+      SVGNS = "http://www.w3.org/2000/svg"
+  assert_equals(document.createElementNS(HTMLNS, "I").nodeName, "I")
+  assert_equals(document.createElementNS(HTMLNS, "i").nodeName, "i")
+  assert_equals(document.createElementNS(SVGNS, "svg").nodeName, "svg")
+  assert_equals(document.createElementNS(SVGNS, "SVG").nodeName, "SVG")
+  assert_equals(document.createElementNS(HTMLNS, "x:b").nodeName, "x:b")
+}, "For Element nodes, nodeName should return the same as tagName.")
+test(function() {
+  assert_equals(document.createTextNode("foo").nodeName, "#text")
+}, "For Text nodes, nodeName should return \"#text\".")
+test(function() {
+  assert_equals(document.createProcessingInstruction("foo", "bar").nodeName,
+                "foo")
+}, "For ProcessingInstruction nodes, nodeName should return the target.")
+test(function() {
+  assert_equals(document.createComment("foo").nodeName, "#comment")
+}, "For Comment nodes, nodeName should return \"#comment\".")
+test(function() {
+  assert_equals(document.nodeName, "#document")
+}, "For Document nodes, nodeName should return \"#document\".")
+test(function() {
+  assert_equals(document.doctype.nodeName, "html")
+}, "For DocumentType nodes, nodeName should return the name.")
+test(function() {
+  assert_equals(document.createDocumentFragment().nodeName,
+                "#document-fragment")
+}, "For DocumentFragment nodes, nodeName should return \"#document-fragment\".")
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Node-nodeName.html b/testing/web-platform/tests/dom/nodes/Node-nodeName.html
new file mode 100644
index 000000000..911f93455
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-nodeName.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>Node.nodeName</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var HTMLNS = "http://www.w3.org/1999/xhtml",
+      SVGNS = "http://www.w3.org/2000/svg"
+  assert_equals(document.createElementNS(HTMLNS, "I").nodeName, "I")
+  assert_equals(document.createElementNS(HTMLNS, "i").nodeName, "I")
+  assert_equals(document.createElementNS(SVGNS, "svg").nodeName, "svg")
+  assert_equals(document.createElementNS(SVGNS, "SVG").nodeName, "SVG")
+  assert_equals(document.createElementNS(HTMLNS, "x:b").nodeName, "X:B")
+}, "For Element nodes, nodeName should return the same as tagName.")
+test(function() {
+  assert_equals(document.createTextNode("foo").nodeName, "#text")
+}, "For Text nodes, nodeName should return \"#text\".")
+test(function() {
+  assert_equals(document.createComment("foo").nodeName, "#comment")
+}, "For Comment nodes, nodeName should return \"#comment\".")
+test(function() {
+  assert_equals(document.nodeName, "#document")
+}, "For Document nodes, nodeName should return \"#document\".")
+test(function() {
+  assert_equals(document.doctype.nodeName, "html")
+}, "For DocumentType nodes, nodeName should return the name.")
+test(function() {
+  assert_equals(document.createDocumentFragment().nodeName,
+                "#document-fragment")
+}, "For DocumentFragment nodes, nodeName should return \"#document-fragment\".")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-nodeValue.html b/testing/web-platform/tests/dom/nodes/Node-nodeValue.html
new file mode 100644
index 000000000..79ce80b87
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-nodeValue.html
@@ -0,0 +1,71 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Node.nodeValue</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodevalue">
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id=log></div>
+<script>
+test(function() {
+  var the_text = document.createTextNode("A span!");
+  assert_equals(the_text.nodeValue, "A span!");
+  assert_equals(the_text.data, "A span!");
+  the_text.nodeValue = "test again";
+  assert_equals(the_text.nodeValue, "test again");
+  assert_equals(the_text.data, "test again");
+  the_text.nodeValue = null;
+  assert_equals(the_text.nodeValue, "");
+  assert_equals(the_text.data, "");
+}, "Text.nodeValue");
+
+test(function() {
+  var the_comment = document.createComment("A comment!");
+  assert_equals(the_comment.nodeValue, "A comment!");
+  assert_equals(the_comment.data, "A comment!");
+  the_comment.nodeValue = "test again";
+  assert_equals(the_comment.nodeValue, "test again");
+  assert_equals(the_comment.data, "test again");
+  the_comment.nodeValue = null;
+  assert_equals(the_comment.nodeValue, "");
+  assert_equals(the_comment.data, "");
+}, "Comment.nodeValue");
+
+test(function() {
+  var the_pi = document.createProcessingInstruction("pi", "A PI!");
+  assert_equals(the_pi.nodeValue, "A PI!");
+  assert_equals(the_pi.data, "A PI!");
+  the_pi.nodeValue = "test again";
+  assert_equals(the_pi.nodeValue, "test again");
+  assert_equals(the_pi.data, "test again");
+  the_pi.nodeValue = null;
+  assert_equals(the_pi.nodeValue, "");
+  assert_equals(the_pi.data, "");
+}, "ProcessingInstruction.nodeValue");
+
+test(function() {
+  var the_link = document.createElement("a");
+  assert_equals(the_link.nodeValue, null);
+  the_link.nodeValue = "foo";
+  assert_equals(the_link.nodeValue, null);
+}, "Element.nodeValue");
+
+test(function() {
+  assert_equals(document.nodeValue, null);
+  document.nodeValue = "foo";
+  assert_equals(document.nodeValue, null);
+}, "Document.nodeValue");
+
+test(function() {
+  var the_frag = document.createDocumentFragment();
+  assert_equals(the_frag.nodeValue, null);
+  the_frag.nodeValue = "foo";
+  assert_equals(the_frag.nodeValue, null);
+}, "DocumentFragment.nodeValue");
+
+test(function() {
+  var the_doctype = document.doctype;
+  assert_equals(the_doctype.nodeValue, null);
+  the_doctype.nodeValue = "foo";
+  assert_equals(the_doctype.nodeValue, null);
+}, "DocumentType.nodeValue");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-normalize.html b/testing/web-platform/tests/dom/nodes/Node-normalize.html
new file mode 100644
index 000000000..7598852e6
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-normalize.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<title>Node.normalize()</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+test(function() {
+  var df = document.createDocumentFragment(),
+      t1 = document.createTextNode("1"),
+      t2 = document.createTextNode("2"),
+      t3 = document.createTextNode("3"),
+      t4 = document.createTextNode("4")
+  df.appendChild(t1)
+  df.appendChild(t2)
+  assert_equals(df.childNodes.length, 2)
+  assert_equals(df.textContent, "12")
+  var el = document.createElement('x')
+  df.appendChild(el)
+  el.appendChild(t3)
+  el.appendChild(t4)
+  document.normalize()
+  assert_equals(el.childNodes.length, 2)
+  assert_equals(el.textContent, "34")
+  assert_equals(df.childNodes.length, 3)
+  assert_equals(t1.data, "1")
+  df.normalize()
+  assert_equals(df.childNodes.length, 2)
+  assert_equals(df.firstChild, t1)
+  assert_equals(t1.data, "12")
+  assert_equals(t2.data, "2")
+  assert_equals(el.firstChild, t3)
+  assert_equals(t3.data, "34")
+  assert_equals(t4.data, "4")
+})
+
+// https://www.w3.org/Bugs/Public/show_bug.cgi?id=19837
+test(function() {
+  var div = document.createElement("div")
+  var t1 = div.appendChild(document.createTextNode(""))
+  var t2 = div.appendChild(document.createTextNode("a"))
+  var t3 = div.appendChild(document.createTextNode(""))
+  assert_array_equals(div.childNodes, [t1, t2, t3])
+  div.normalize();
+  assert_array_equals(div.childNodes, [t2])
+}, "Empty text nodes separated by a non-empty text node")
+test(function() {
+  var div = document.createElement("div")
+  var t1 = div.appendChild(document.createTextNode(""))
+  var t2 = div.appendChild(document.createTextNode(""))
+  assert_array_equals(div.childNodes, [t1, t2])
+  div.normalize();
+  assert_array_equals(div.childNodes, [])
+}, "Empty text nodes")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-parentElement.html b/testing/web-platform/tests/dom/nodes/Node-parentElement.html
new file mode 100644
index 000000000..bc564bee0
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-parentElement.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<title>Node.parentElement</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  assert_equals(document.parentElement, null)
+}, "When the parent is null, parentElement should be null")
+test(function() {
+  assert_equals(document.doctype.parentElement, null)
+}, "When the parent is a document, parentElement should be null (doctype)")
+test(function() {
+  assert_equals(document.documentElement.parentElement, null)
+}, "When the parent is a document, parentElement should be null (element)")
+test(function() {
+  var comment = document.appendChild(document.createComment("foo"))
+  assert_equals(comment.parentElement, null)
+}, "When the parent is a document, parentElement should be null (comment)")
+test(function() {
+  var df = document.createDocumentFragment()
+  assert_equals(df.parentElement, null)
+  var el = document.createElement("div")
+  assert_equals(el.parentElement, null)
+  df.appendChild(el)
+  assert_equals(el.parentNode, df)
+  assert_equals(el.parentElement, null)
+}, "parentElement should return null for children of DocumentFragments (element)")
+test(function() {
+  var df = document.createDocumentFragment()
+  assert_equals(df.parentElement, null)
+  var text = document.createTextNode("bar")
+  assert_equals(text.parentElement, null)
+  df.appendChild(text)
+  assert_equals(text.parentNode, df)
+  assert_equals(text.parentElement, null)
+}, "parentElement should return null for children of DocumentFragments (text)")
+test(function() {
+  var df = document.createDocumentFragment()
+  var parent = document.createElement("div")
+  df.appendChild(parent)
+  var el = document.createElement("div")
+  assert_equals(el.parentElement, null)
+  parent.appendChild(el)
+  assert_equals(el.parentElement, parent)
+}, "parentElement should work correctly with DocumentFragments (element)")
+test(function() {
+  var df = document.createDocumentFragment()
+  var parent = document.createElement("div")
+  df.appendChild(parent)
+  var text = document.createTextNode("bar")
+  assert_equals(text.parentElement, null)
+  parent.appendChild(text)
+  assert_equals(text.parentElement, parent)
+}, "parentElement should work correctly with DocumentFragments (text)")
+test(function() {
+  var parent = document.createElement("div")
+  var el = document.createElement("div")
+  assert_equals(el.parentElement, null)
+  parent.appendChild(el)
+  assert_equals(el.parentElement, parent)
+}, "parentElement should work correctly in disconnected subtrees (element)")
+test(function() {
+  var parent = document.createElement("div")
+  var text = document.createTextNode("bar")
+  assert_equals(text.parentElement, null)
+  parent.appendChild(text)
+  assert_equals(text.parentElement, parent)
+}, "parentElement should work correctly in disconnected subtrees (text)")
+test(function() {
+  var el = document.createElement("div")
+  assert_equals(el.parentElement, null)
+  document.body.appendChild(el)
+  assert_equals(el.parentElement, document.body)
+}, "parentElement should work correctly in a document (element)")
+test(function() {
+  var text = document.createElement("div")
+  assert_equals(text.parentElement, null)
+  document.body.appendChild(text)
+  assert_equals(text.parentElement, document.body)
+}, "parentElement should work correctly in a document (text)")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-parentNode-iframe.html b/testing/web-platform/tests/dom/nodes/Node-parentNode-iframe.html
new file mode 100644
index 000000000..88bc5ab43
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-parentNode-iframe.html
@@ -0,0 +1 @@
+<a name='c'>c</a>
+\ No newline at end of file
diff --git a/testing/web-platform/tests/dom/nodes/Node-parentNode.html b/testing/web-platform/tests/dom/nodes/Node-parentNode.html
new file mode 100644
index 000000000..cff617862
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-parentNode.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<title>Node.parentNode</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+// XXX need to test for more node types
+test(function() {
+  assert_equals(document.parentNode, null)
+}, "Document")
+test(function() {
+  assert_equals(document.doctype.parentNode, document)
+}, "Doctype")
+test(function() {
+  assert_equals(document.documentElement.parentNode, document)
+}, "Root element")
+test(function() {
+  var el = document.createElement("div")
+  assert_equals(el.parentNode, null)
+  document.body.appendChild(el)
+  assert_equals(el.parentNode, document.body)
+}, "Element")
+var t = async_test("Removed iframe");
+function testIframe(iframe) {
+  t.step(function() {
+    var doc = iframe.contentDocument;
+    iframe.parentNode.removeChild(iframe);
+    assert_equals(doc.firstChild.parentNode, doc);
+  });
+  t.done();
+}
+</script>
+<iframe id=a src="Node-parentNode-iframe.html" onload="testIframe(this)"></iframe>
diff --git a/testing/web-platform/tests/dom/nodes/Node-properties.html b/testing/web-platform/tests/dom/nodes/Node-properties.html
new file mode 100644
index 000000000..10f92e7d7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-properties.html
@@ -0,0 +1,688 @@
+<!doctype html>
+<title>Node assorted property tests</title>
+<link rel=author title="Aryeh Gregor" href=ayg@aryeh.name>
+<meta charset=utf-8>
+<div id=log></div>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=../common.js></script>
+<script>
+"use strict";
+/**
+ * First we define a data structure to tell us what tests to run.  The keys
+ * will be eval()ed, and are mostly global variables defined in common.js.  The
+ * values are objects, which maps properties to expected values.  So
+ *
+ *     foo: {
+ *         bar: "baz",
+ *         quz: 7,
+ *     },
+ *
+ * will test that eval("foo.bar") === "baz" and eval("foo.quz") === 7.  "foo"
+ * and "bar" could thus be expressions, like "document.documentElement" and
+ * "childNodes[4]" respectively.
+ *
+ * To avoid repetition, some values are automatically added based on others.
+ * For instance, if we specify nodeType: Node.TEXT_NODE, we'll automatically
+ * also test nodeName: "#text".  This is handled by code after this variable is
+ * defined.
+ */
+var expected = {
+    testDiv: {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: document,
+        parentNode: document.body,
+        parentElement: document.body,
+        "childNodes.length": 6,
+        "childNodes[0]": paras[0],
+        "childNodes[1]": paras[1],
+        "childNodes[2]": paras[2],
+        "childNodes[3]": paras[3],
+        "childNodes[4]": paras[4],
+        "childNodes[5]": comment,
+        previousSibling: null,
+        nextSibling: document.getElementById("log"),
+        textContent: "A\u0308b\u0308c\u0308d\u0308e\u0308f\u0308g\u0308h\u0308\nIjklmnop\nQrstuvwxYzabcdefGhijklmn",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "div",
+        tagName: "DIV",
+        id: "test",
+        "children[0]": paras[0],
+        "children[1]": paras[1],
+        "children[2]": paras[2],
+        "children[3]": paras[3],
+        "children[4]": paras[4],
+        previousElementSibling: null,
+        // nextSibling isn't explicitly set
+        //nextElementSibling: ,
+        childElementCount: 5,
+    },
+    detachedDiv: {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: document,
+        parentNode: null,
+        parentElement: null,
+        "childNodes.length": 2,
+        "childNodes[0]": detachedPara1,
+        "childNodes[1]": detachedPara2,
+        previousSibling: null,
+        nextSibling: null,
+        textContent: "OpqrstuvWxyzabcd",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "div",
+        tagName: "DIV",
+        "children[0]": detachedPara1,
+        "children[1]": detachedPara2,
+        previousElementSibling: null,
+        nextElementSibling: null,
+        childElementCount: 2,
+    },
+    detachedPara1: {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: document,
+        parentNode: detachedDiv,
+        parentElement: detachedDiv,
+        "childNodes.length": 1,
+        previousSibling: null,
+        nextSibling: detachedPara2,
+        textContent: "Opqrstuv",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "p",
+        tagName: "P",
+        previousElementSibling: null,
+        nextElementSibling: detachedPara2,
+        childElementCount: 0,
+    },
+    detachedPara2: {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: document,
+        parentNode: detachedDiv,
+        parentElement: detachedDiv,
+        "childNodes.length": 1,
+        previousSibling: detachedPara1,
+        nextSibling: null,
+        textContent: "Wxyzabcd",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "p",
+        tagName: "P",
+        previousElementSibling: detachedPara1,
+        nextElementSibling: null,
+        childElementCount: 0,
+    },
+    document: {
+        // Node
+        nodeType: Node.DOCUMENT_NODE,
+        "childNodes.length": 2,
+        "childNodes[0]": document.doctype,
+        "childNodes[1]": document.documentElement,
+
+        // Document
+        URL: String(location),
+        compatMode: "CSS1Compat",
+        characterSet: "UTF-8",
+        contentType: "text/html",
+        doctype: doctype,
+        //documentElement: ,
+    },
+    foreignDoc: {
+        // Node
+        nodeType: Node.DOCUMENT_NODE,
+        "childNodes.length": 3,
+        "childNodes[0]": foreignDoc.doctype,
+        "childNodes[1]": foreignDoc.documentElement,
+        "childNodes[2]": foreignComment,
+
+        // Document
+        URL: "about:blank",
+        compatMode: "CSS1Compat",
+        characterSet: "UTF-8",
+        contentType: "text/html",
+        //doctype: ,
+        //documentElement: ,
+    },
+    foreignPara1: {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: foreignDoc,
+        parentNode: foreignDoc.body,
+        parentElement: foreignDoc.body,
+        "childNodes.length": 1,
+        previousSibling: null,
+        nextSibling: foreignPara2,
+        textContent: "Efghijkl",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "p",
+        tagName: "P",
+        previousElementSibling: null,
+        nextElementSibling: foreignPara2,
+        childElementCount: 0,
+    },
+    foreignPara2: {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: foreignDoc,
+        parentNode: foreignDoc.body,
+        parentElement: foreignDoc.body,
+        "childNodes.length": 1,
+        previousSibling: foreignPara1,
+        nextSibling: foreignTextNode,
+        textContent: "Mnopqrst",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "p",
+        tagName: "P",
+        previousElementSibling: foreignPara1,
+        nextElementSibling: null,
+        childElementCount: 0,
+    },
+    xmlDoc: {
+        // Node
+        nodeType: Node.DOCUMENT_NODE,
+        "childNodes.length": 4,
+        "childNodes[0]": xmlDoctype,
+        "childNodes[1]": xmlElement,
+        "childNodes[2]": processingInstruction,
+        "childNodes[3]": xmlComment,
+
+        // Document
+        URL: "about:blank",
+        compatMode: "CSS1Compat",
+        characterSet: "UTF-8",
+        contentType: "application/xml",
+        //doctype: ,
+        //documentElement: ,
+    },
+    xmlElement: {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: xmlDoc,
+        parentNode: xmlDoc,
+        parentElement: null,
+        "childNodes.length": 1,
+        "childNodes[0]": xmlTextNode,
+        previousSibling: xmlDoctype,
+        nextSibling: processingInstruction,
+        textContent: "do re mi fa so la ti",
+
+        // Element
+        namespaceURI: null,
+        prefix: null,
+        localName: "igiveuponcreativenames",
+        tagName: "igiveuponcreativenames",
+        previousElementSibling: null,
+        nextElementSibling: null,
+        childElementCount: 0,
+    },
+    detachedXmlElement: {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: xmlDoc,
+        parentNode: null,
+        parentElement: null,
+        "childNodes.length": 0,
+        previousSibling: null,
+        nextSibling: null,
+        textContent: "",
+
+        // Element
+        namespaceURI: null,
+        prefix: null,
+        localName: "everyone-hates-hyphenated-element-names",
+        tagName: "everyone-hates-hyphenated-element-names",
+        previousElementSibling: null,
+        nextElementSibling: null,
+        childElementCount: 0,
+    },
+    detachedTextNode: {
+        // Node
+        nodeType: Node.TEXT_NODE,
+        ownerDocument: document,
+        parentNode: null,
+        parentElement: null,
+        previousSibling: null,
+        nextSibling: null,
+        nodeValue: "Uvwxyzab",
+
+        // Text
+        wholeText: "Uvwxyzab",
+    },
+    foreignTextNode: {
+        // Node
+        nodeType: Node.TEXT_NODE,
+        ownerDocument: foreignDoc,
+        parentNode: foreignDoc.body,
+        parentElement: foreignDoc.body,
+        previousSibling: foreignPara2,
+        nextSibling: null,
+        nodeValue: "I admit that I harbor doubts about whether we really need so many things to test, but it's too late to stop now.",
+
+        // Text
+        wholeText: "I admit that I harbor doubts about whether we really need so many things to test, but it's too late to stop now.",
+    },
+    detachedForeignTextNode: {
+        // Node
+        nodeType: Node.TEXT_NODE,
+        ownerDocument: foreignDoc,
+        parentNode: null,
+        parentElement: null,
+        previousSibling: null,
+        nextSibling: null,
+        nodeValue: "Cdefghij",
+
+        // Text
+        wholeText: "Cdefghij",
+    },
+    xmlTextNode: {
+        // Node
+        nodeType: Node.TEXT_NODE,
+        ownerDocument: xmlDoc,
+        parentNode: xmlElement,
+        parentElement: xmlElement,
+        previousSibling: null,
+        nextSibling: null,
+        nodeValue: "do re mi fa so la ti",
+
+        // Text
+        wholeText: "do re mi fa so la ti",
+    },
+    detachedXmlTextNode: {
+        // Node
+        nodeType: Node.TEXT_NODE,
+        ownerDocument: xmlDoc,
+        parentNode: null,
+        parentElement: null,
+        previousSibling: null,
+        nextSibling: null,
+        nodeValue: "Klmnopqr",
+
+        // Text
+        wholeText: "Klmnopqr",
+    },
+    processingInstruction: {
+        // Node
+        nodeType: Node.PROCESSING_INSTRUCTION_NODE,
+        ownerDocument: xmlDoc,
+        parentNode: xmlDoc,
+        parentElement: null,
+        previousSibling: xmlElement,
+        nextSibling: xmlComment,
+        nodeValue: 'Did you know that ":syn sync fromstart" is very useful when using vim to edit large amounts of JavaScript embedded in HTML?',
+
+        // ProcessingInstruction
+        target: "somePI",
+    },
+    detachedProcessingInstruction: {
+        // Node
+        nodeType: Node.PROCESSING_INSTRUCTION_NODE,
+        ownerDocument: xmlDoc,
+        parentNode: null,
+        parentElement: null,
+        previousSibling: null,
+        nextSibling: null,
+        nodeValue: "chirp chirp chirp",
+
+        // ProcessingInstruction
+        target: "whippoorwill",
+    },
+    comment: {
+        // Node
+        nodeType: Node.COMMENT_NODE,
+        ownerDocument: document,
+        parentNode: testDiv,
+        parentElement: testDiv,
+        previousSibling: paras[4],
+        nextSibling: null,
+        nodeValue: "Alphabet soup?",
+    },
+    detachedComment: {
+        // Node
+        nodeType: Node.COMMENT_NODE,
+        ownerDocument: document,
+        parentNode: null,
+        parentElement: null,
+        previousSibling: null,
+        nextSibling: null,
+        nodeValue: "Stuvwxyz",
+    },
+    foreignComment: {
+        // Node
+        nodeType: Node.COMMENT_NODE,
+        ownerDocument: foreignDoc,
+        parentNode: foreignDoc,
+        parentElement: null,
+        previousSibling: foreignDoc.documentElement,
+        nextSibling: null,
+        nodeValue: '"Commenter" and "commentator" mean different things.  I\'ve seen non-native speakers trip up on this.',
+    },
+    detachedForeignComment: {
+        // Node
+        nodeType: Node.COMMENT_NODE,
+        ownerDocument: foreignDoc,
+        parentNode: null,
+        parentElement: null,
+        previousSibling: null,
+        nextSibling: null,
+        nodeValue: "אריה יהודה",
+    },
+    xmlComment: {
+        // Node
+        nodeType: Node.COMMENT_NODE,
+        ownerDocument: xmlDoc,
+        parentNode: xmlDoc,
+        parentElement: null,
+        previousSibling: processingInstruction,
+        nextSibling: null,
+        nodeValue: "I maliciously created a comment that will break incautious XML serializers, but Firefox threw an exception, so all I got was this lousy T-shirt",
+    },
+    detachedXmlComment: {
+        // Node
+        nodeType: Node.COMMENT_NODE,
+        ownerDocument: xmlDoc,
+        parentNode: null,
+        parentElement: null,
+        previousSibling: null,
+        nextSibling: null,
+        nodeValue: "בן חיים אליעזר",
+    },
+    docfrag: {
+        // Node
+        nodeType: Node.DOCUMENT_FRAGMENT_NODE,
+        ownerDocument: document,
+        "childNodes.length": 0,
+        textContent: "",
+    },
+    foreignDocfrag: {
+        // Node
+        nodeType: Node.DOCUMENT_FRAGMENT_NODE,
+        ownerDocument: foreignDoc,
+        "childNodes.length": 0,
+        textContent: "",
+    },
+    xmlDocfrag: {
+        // Node
+        nodeType: Node.DOCUMENT_FRAGMENT_NODE,
+        ownerDocument: xmlDoc,
+        "childNodes.length": 0,
+        textContent: "",
+    },
+    doctype: {
+        // Node
+        nodeType: Node.DOCUMENT_TYPE_NODE,
+        ownerDocument: document,
+        parentNode: document,
+        previousSibling: null,
+        nextSibling: document.documentElement,
+
+        // DocumentType
+        name: "html",
+        publicId: "",
+        systemId: "",
+    },
+    foreignDoctype: {
+        // Node
+        nodeType: Node.DOCUMENT_TYPE_NODE,
+        ownerDocument: foreignDoc,
+        parentNode: foreignDoc,
+        previousSibling: null,
+        nextSibling: foreignDoc.documentElement,
+
+        // DocumentType
+        name: "html",
+        publicId: "",
+        systemId: "",
+    },
+    xmlDoctype: {
+        // Node
+        nodeType: Node.DOCUMENT_TYPE_NODE,
+        ownerDocument: xmlDoc,
+        parentNode: xmlDoc,
+        previousSibling: null,
+        nextSibling: xmlElement,
+
+        // DocumentType
+        name: "qorflesnorf",
+        publicId: "abcde",
+        systemId: "x\"'y",
+    },
+    "paras[0]": {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: document,
+        parentNode: testDiv,
+        parentElement: testDiv,
+        "childNodes.length": 1,
+        previousSibling: null,
+        nextSibling: paras[1],
+        textContent: "A\u0308b\u0308c\u0308d\u0308e\u0308f\u0308g\u0308h\u0308\n",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "p",
+        tagName: "P",
+        id: "a",
+        previousElementSibling: null,
+        nextElementSibling: paras[1],
+        childElementCount: 0,
+    },
+    "paras[1]": {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: document,
+        parentNode: testDiv,
+        parentElement: testDiv,
+        "childNodes.length": 1,
+        previousSibling: paras[0],
+        nextSibling: paras[2],
+        textContent: "Ijklmnop\n",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "p",
+        tagName: "P",
+        id: "b",
+        previousElementSibling: paras[0],
+        nextElementSibling: paras[2],
+        childElementCount: 0,
+    },
+    "paras[2]": {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: document,
+        parentNode: testDiv,
+        parentElement: testDiv,
+        "childNodes.length": 1,
+        previousSibling: paras[1],
+        nextSibling: paras[3],
+        textContent: "Qrstuvwx",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "p",
+        tagName: "P",
+        id: "c",
+        previousElementSibling: paras[1],
+        nextElementSibling: paras[3],
+        childElementCount: 0,
+    },
+    "paras[3]": {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: document,
+        parentNode: testDiv,
+        parentElement: testDiv,
+        "childNodes.length": 1,
+        previousSibling: paras[2],
+        nextSibling: paras[4],
+        textContent: "Yzabcdef",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "p",
+        tagName: "P",
+        id: "d",
+        previousElementSibling: paras[2],
+        nextElementSibling: paras[4],
+        childElementCount: 0,
+    },
+    "paras[4]": {
+        // Node
+        nodeType: Node.ELEMENT_NODE,
+        ownerDocument: document,
+        parentNode: testDiv,
+        parentElement: testDiv,
+        "childNodes.length": 1,
+        previousSibling: paras[3],
+        nextSibling: comment,
+        textContent: "Ghijklmn",
+
+        // Element
+        namespaceURI: "http://www.w3.org/1999/xhtml",
+        prefix: null,
+        localName: "p",
+        tagName: "P",
+        id: "e",
+        previousElementSibling: paras[3],
+        nextElementSibling: null,
+        childElementCount: 0,
+    },
+};
+
+for (var node in expected) {
+    // Now we set various default values by node type.
+    switch (expected[node].nodeType) {
+    case Node.ELEMENT_NODE:
+        expected[node].nodeName = expected[node].tagName;
+        expected[node].nodeValue = null;
+        expected[node]["children.length"] = expected[node].childElementCount;
+
+        if (expected[node].id === undefined) {
+            expected[node].id = "";
+        }
+        if (expected[node].className === undefined) {
+            expected[node].className = "";
+        }
+
+        var len = expected[node].childElementCount;
+        if (len === 0) {
+            expected[node].firstElementChild =
+            expected[node].lastElementChild = null;
+        } else {
+            // If we have expectations for the first/last child in children,
+            // use those.  Otherwise, at least check that .firstElementChild ==
+            // .children[0] and .lastElementChild == .children[len - 1], even
+            // if we aren't sure what they should be.
+            expected[node].firstElementChild = expected[node]["children[0]"]
+                ? expected[node]["children[0]"]
+                : eval(node).children[0];
+            expected[node].lastElementChild =
+                expected[node]["children[" + (len - 1) + "]"]
+                ? expected[node]["children[" + (len - 1) + "]"]
+                : eval(node).children[len - 1];
+        }
+        break;
+
+    case Node.TEXT_NODE:
+        expected[node].nodeName = "#text";
+        expected[node]["childNodes.length"] = 0;
+        expected[node].textContent = expected[node].data =
+            expected[node].nodeValue;
+        expected[node].length = expected[node].nodeValue.length;
+        break;
+
+    case Node.PROCESSING_INSTRUCTION_NODE:
+        expected[node].nodeName = expected[node].target;
+        expected[node]["childNodes.length"] = 0;
+        expected[node].textContent = expected[node].data =
+            expected[node].nodeValue;
+        expected[node].length = expected[node].nodeValue.length;
+        break;
+
+    case Node.COMMENT_NODE:
+        expected[node].nodeName = "#comment";
+        expected[node]["childNodes.length"] = 0;
+        expected[node].textContent = expected[node].data =
+            expected[node].nodeValue;
+        expected[node].length = expected[node].nodeValue.length;
+        break;
+
+    case Node.DOCUMENT_NODE:
+        expected[node].nodeName = "#document";
+        expected[node].ownerDocument = expected[node].parentNode =
+            expected[node].parentElement = expected[node].previousSibling =
+            expected[node].nextSibling = expected[node].nodeValue =
+            expected[node].textContent = null;
+        expected[node].documentURI = expected[node].URL;
+        expected[node].charset = expected[node].inputEncoding =
+            expected[node].characterSet;
+        break;
+
+    case Node.DOCUMENT_TYPE_NODE:
+        expected[node].nodeName = expected[node].name;
+        expected[node]["childNodes.length"] = 0;
+        expected[node].parentElement = expected[node].nodeValue =
+            expected[node].textContent = null;
+        break;
+
+    case Node.DOCUMENT_FRAGMENT_NODE:
+        expected[node].nodeName = "#document-fragment";
+        expected[node].parentNode = expected[node].parentElement =
+            expected[node].previousSibling = expected[node].nextSibling =
+            expected[node].nodeValue = null;
+        break;
+    }
+
+    // Now we set some further default values that are independent of node
+    // type.
+    var len = expected[node]["childNodes.length"];
+    if (len === 0) {
+        expected[node].firstChild = expected[node].lastChild = null;
+    } else {
+        // If we have expectations for the first/last child in childNodes, use
+        // those.  Otherwise, at least check that .firstChild == .childNodes[0]
+        // and .lastChild == .childNodes[len - 1], even if we aren't sure what
+        // they should be.
+        expected[node].firstChild = expected[node]["childNodes[0]"]
+            ? expected[node]["childNodes[0]"]
+            : eval(node).childNodes[0];
+        expected[node].lastChild =
+            expected[node]["childNodes[" + (len - 1) + "]"]
+            ? expected[node]["childNodes[" + (len - 1) + "]"]
+            : eval(node).childNodes[len - 1];
+    }
+    expected[node]["hasChildNodes()"] = !!expected[node]["childNodes.length"];
+
+    // Finally, we test!
+    for (var prop in expected[node]) {
+        test(function() {
+            assert_equals(eval(node + "." + prop), expected[node][prop]);
+        }, node + "." + prop);
+    }
+}
+
+testDiv.parentNode.removeChild(testDiv);
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-removeChild.html b/testing/web-platform/tests/dom/nodes/Node-removeChild.html
new file mode 100644
index 000000000..fb2258322
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-removeChild.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<title>Node.removeChild</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="creators.js"></script>
+<div id="log"></div>
+<iframe src=about:blank></iframe>
+<script>
+var documents = [
+  [function() { return document }, "the main document"],
+  [function() { return frames[0].document }, "a frame document"],
+  [function() { return document.implementation.createHTMLDocument() },
+   "a synthetic document"],
+];
+
+documents.forEach(function(d) {
+  var get = d[0], description = d[1]
+  for (var p in creators) {
+    var creator = creators[p];
+    test(function() {
+      var doc = get();
+      var s = doc[creator]("a")
+      assert_equals(s.ownerDocument, doc)
+      assert_throws("NOT_FOUND_ERR", function() { document.body.removeChild(s) })
+      assert_equals(s.ownerDocument, doc)
+    }, "Passing a detached " + p + " from " + description +
+       " to removeChild should not affect it.")
+
+    test(function() {
+      var doc = get();
+      var s = doc[creator]("b")
+      doc.documentElement.appendChild(s)
+      assert_equals(s.ownerDocument, doc)
+      assert_throws("NOT_FOUND_ERR", function() { document.body.removeChild(s) })
+      assert_equals(s.ownerDocument, doc)
+    }, "Passing a non-detached " + p + " from " + description +
+       " to removeChild should not affect it.")
+
+    test(function() {
+      var doc = get();
+      var s = doc[creator]("test")
+      doc.body.appendChild(s)
+      assert_equals(s.ownerDocument, doc)
+      assert_throws("NOT_FOUND_ERR", function() { s.removeChild(doc) })
+    }, "Calling removeChild on a " + p + " from " + description +
+       " with no children should throw NOT_FOUND_ERR.")
+  }
+});
+
+test(function() {
+  assert_throws(new TypeError(), function() { document.body.removeChild(null) })
+  assert_throws(new TypeError(), function() { document.body.removeChild({'a':'b'}) })
+}, "Passing a value that is not a Node reference to removeChild should throw TypeError.")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-replaceChild.html b/testing/web-platform/tests/dom/nodes/Node-replaceChild.html
new file mode 100644
index 000000000..e8ba496cd
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-replaceChild.html
@@ -0,0 +1,345 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Node.replaceChild</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body><a><b></b><c></c></a>
+<div id="log"></div>
+<script>
+// IDL.
+test(function() {
+  var a = document.createElement("div");
+  assert_throws(new TypeError(), function() {
+    a.replaceChild(null, null);
+  });
+
+  var b = document.createElement("div");
+  assert_throws(new TypeError(), function() {
+    a.replaceChild(b, null);
+  });
+  assert_throws(new TypeError(), function() {
+    a.replaceChild(null, b);
+  });
+}, "Passing null to replaceChild should throw a TypeError.")
+
+// Step 1.
+test(function() {
+  var a = document.createElement("div");
+  var b = document.createElement("div");
+  var c = document.createElement("div");
+  assert_throws("NotFoundError", function() {
+    a.replaceChild(b, c);
+  });
+
+  var d = document.createElement("div");
+  d.appendChild(b);
+  assert_throws("NotFoundError", function() {
+    a.replaceChild(b, c);
+  });
+  assert_throws("NotFoundError", function() {
+    a.replaceChild(b, a);
+  });
+}, "If child's parent is not the context node, a NotFoundError exception should be thrown")
+test(function() {
+  var nodes = [
+    document.implementation.createDocumentType("html", "", ""),
+    document.createTextNode("text"),
+    document.implementation.createDocument(null, "foo", null).createProcessingInstruction("foo", "bar"),
+    document.createComment("comment")
+  ];
+
+  var a = document.createElement("div");
+  var b = document.createElement("div");
+  nodes.forEach(function(node) {
+    assert_throws("HierarchyRequestError", function() {
+      node.replaceChild(a, b);
+    });
+  });
+}, "If the context node is not a node that can contain children, a NotFoundError exception should be thrown")
+
+// Step 2.
+test(function() {
+  var a = document.createElement("div");
+  var b = document.createElement("div");
+
+  assert_throws("HierarchyRequestError", function() {
+    a.replaceChild(a, a);
+  });
+
+  a.appendChild(b);
+  assert_throws("HierarchyRequestError", function() {
+    a.replaceChild(a, b);
+  });
+
+  var c = document.createElement("div");
+  c.appendChild(a);
+  assert_throws("HierarchyRequestError", function() {
+    a.replaceChild(c, b);
+  });
+}, "If node is an inclusive ancestor of the context node, a HierarchyRequestError should be thrown.")
+
+// Step 3.1.
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var doc2 = document.implementation.createHTMLDocument("title2");
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(doc2, doc.documentElement);
+  });
+
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(doc.createTextNode("text"), doc.documentElement);
+  });
+}, "If the context node is a document, inserting a document or text node should throw a HierarchyRequestError.")
+
+// Step 3.2.1.
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+
+  var df = doc.createDocumentFragment();
+  df.appendChild(doc.createElement("a"));
+  df.appendChild(doc.createElement("b"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(df, doc.documentElement);
+  });
+
+  df = doc.createDocumentFragment();
+  df.appendChild(doc.createTextNode("text"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(df, doc.documentElement);
+  });
+
+  df = doc.createDocumentFragment();
+  df.appendChild(doc.createComment("comment"));
+  df.appendChild(doc.createTextNode("text"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(df, doc.documentElement);
+  });
+}, "If the context node is a document, inserting a DocumentFragment that contains a text node or too many elements should throw a HierarchyRequestError.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  doc.removeChild(doc.documentElement);
+
+  var df = doc.createDocumentFragment();
+  df.appendChild(doc.createElement("a"));
+  df.appendChild(doc.createElement("b"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(df, doc.doctype);
+  });
+}, "If the context node is a document (without element children), inserting a DocumentFragment that contains multiple elements should throw a HierarchyRequestError.")
+
+// Step 3.2.2.
+test(function() {
+  // The context node has an element child that is not /child/.
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.appendChild(doc.createComment("foo"));
+  assert_array_equals(doc.childNodes, [doc.doctype, doc.documentElement, comment]);
+
+  var df = doc.createDocumentFragment();
+  df.appendChild(doc.createElement("a"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(df, comment);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(df, doc.doctype);
+  });
+}, "If the context node is a document, inserting a DocumentFragment with an element if there already is an element child should throw a HierarchyRequestError.")
+test(function() {
+  // A doctype is following /child/.
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.insertBefore(doc.createComment("foo"), doc.firstChild);
+  doc.removeChild(doc.documentElement);
+  assert_array_equals(doc.childNodes, [comment, doc.doctype]);
+
+  var df = doc.createDocumentFragment();
+  df.appendChild(doc.createElement("a"));
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(df, comment);
+  });
+}, "If the context node is a document, inserting a DocumentFragment with an element before the doctype should throw a HierarchyRequestError.")
+
+// Step 3.3.
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.appendChild(doc.createComment("foo"));
+  assert_array_equals(doc.childNodes, [doc.doctype, doc.documentElement, comment]);
+
+  var a = doc.createElement("a");
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(a, comment);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(a, doc.doctype);
+  });
+}, "If the context node is a document, inserting an element if there already is an element child should throw a HierarchyRequestError.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.insertBefore(doc.createComment("foo"), doc.firstChild);
+  doc.removeChild(doc.documentElement);
+  assert_array_equals(doc.childNodes, [comment, doc.doctype]);
+
+  var a = doc.createElement("a");
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(a, comment);
+  });
+}, "If the context node is a document, inserting an element before the doctype should throw a HierarchyRequestError.")
+
+// Step 3.4.
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.insertBefore(doc.createComment("foo"), doc.firstChild);
+  assert_array_equals(doc.childNodes, [comment, doc.doctype, doc.documentElement]);
+
+  var doctype = document.implementation.createDocumentType("html", "", "");
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(doctype, comment);
+  });
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(doctype, doc.documentElement);
+  });
+}, "If the context node is a document, inserting a doctype if there already is a doctype child should throw a HierarchyRequestError.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var comment = doc.appendChild(doc.createComment("foo"));
+  doc.removeChild(doc.doctype);
+  assert_array_equals(doc.childNodes, [doc.documentElement, comment]);
+
+  var doctype = document.implementation.createDocumentType("html", "", "");
+  assert_throws("HierarchyRequestError", function() {
+    doc.replaceChild(doctype, comment);
+  });
+}, "If the context node is a document, inserting a doctype after the document element should throw a HierarchyRequestError.")
+
+// Step 4.
+test(function() {
+  var df = document.createDocumentFragment();
+  var a = df.appendChild(document.createElement("a"));
+
+  var doc = document.implementation.createHTMLDocument("title");
+  assert_throws("HierarchyRequestError", function() {
+    df.replaceChild(doc, a);
+  });
+
+  var doctype = document.implementation.createDocumentType("html", "", "");
+  assert_throws("HierarchyRequestError", function() {
+    df.replaceChild(doctype, a);
+  });
+}, "If the context node is a DocumentFragment, inserting a document or a doctype should throw a HierarchyRequestError.")
+test(function() {
+  var el = document.createElement("div");
+  var a = el.appendChild(document.createElement("a"));
+
+  var doc = document.implementation.createHTMLDocument("title");
+  assert_throws("HierarchyRequestError", function() {
+    el.replaceChild(doc, a);
+  });
+
+  var doctype = document.implementation.createDocumentType("html", "", "");
+  assert_throws("HierarchyRequestError", function() {
+    el.replaceChild(doctype, a);
+  });
+}, "If the context node is an element, inserting a document or a doctype should throw a HierarchyRequestError.")
+
+// Step 6.
+test(function() {
+  var a = document.createElement("div");
+  var b = document.createElement("div");
+  var c = document.createElement("div");
+  a.appendChild(b);
+  a.appendChild(c);
+  assert_array_equals(a.childNodes, [b, c]);
+  assert_equals(a.replaceChild(c, b), b);
+  assert_array_equals(a.childNodes, [c]);
+}, "Replacing a node with its next sibling should work (2 children)");
+test(function() {
+  var a = document.createElement("div");
+  var b = document.createElement("div");
+  var c = document.createElement("div");
+  var d = document.createElement("div");
+  var e = document.createElement("div");
+  a.appendChild(b);
+  a.appendChild(c);
+  a.appendChild(d);
+  a.appendChild(e);
+  assert_array_equals(a.childNodes, [b, c, d, e]);
+  assert_equals(a.replaceChild(d, c), c);
+  assert_array_equals(a.childNodes, [b, d, e]);
+}, "Replacing a node with its next sibling should work (4 children)");
+test(function() {
+  var a = document.createElement("div");
+  var b = document.createElement("div");
+  var c = document.createElement("div");
+  a.appendChild(b);
+  a.appendChild(c);
+  assert_array_equals(a.childNodes, [b, c]);
+  assert_equals(a.replaceChild(b, b), b);
+  assert_array_equals(a.childNodes, [b, c]);
+  assert_equals(a.replaceChild(c, c), c);
+  assert_array_equals(a.childNodes, [b, c]);
+}, "Replacing a node with itself should not move the node");
+
+// Step 7.
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var doctype = doc.doctype;
+  assert_array_equals(doc.childNodes, [doctype, doc.documentElement]);
+
+  var doc2 = document.implementation.createHTMLDocument("title2");
+  var doctype2 = doc2.doctype;
+  assert_array_equals(doc2.childNodes, [doctype2, doc2.documentElement]);
+
+  doc.replaceChild(doc2.doctype, doc.doctype);
+  assert_array_equals(doc.childNodes, [doctype2, doc.documentElement]);
+  assert_array_equals(doc2.childNodes, [doc2.documentElement]);
+  assert_equals(doctype.parentNode, null);
+  assert_equals(doctype.ownerDocument, doc);
+  assert_equals(doctype2.parentNode, doc);
+  assert_equals(doctype2.ownerDocument, doc);
+}, "If the context node is a document, inserting a new doctype should work.")
+
+// Bugs.
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var df = doc.createDocumentFragment();
+  var a = df.appendChild(doc.createElement("a"));
+  assert_equals(doc.documentElement, doc.replaceChild(df, doc.documentElement));
+  assert_array_equals(doc.childNodes, [doc.doctype, a]);
+}, "Replacing the document element with a DocumentFragment containing a single element should work.");
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var df = doc.createDocumentFragment();
+  var a = df.appendChild(doc.createComment("a"));
+  var b = df.appendChild(doc.createElement("b"));
+  var c = df.appendChild(doc.createComment("c"));
+  assert_equals(doc.documentElement, doc.replaceChild(df, doc.documentElement));
+  assert_array_equals(doc.childNodes, [doc.doctype, a, b, c]);
+}, "Replacing the document element with a DocumentFragment containing a single element and comments should work.");
+test(function() {
+  var doc = document.implementation.createHTMLDocument("title");
+  var a = doc.createElement("a");
+  assert_equals(doc.documentElement, doc.replaceChild(a, doc.documentElement));
+  assert_array_equals(doc.childNodes, [doc.doctype, a]);
+}, "Replacing the document element with a single element should work.");
+test(function() {
+  document.addEventListener("DOMNodeRemoved", function(e) {
+    document.body.appendChild(document.createElement("x"));
+  }, false);
+  var a = document.body.firstChild, b = a.firstChild, c = b.nextSibling;
+  assert_equals(a.replaceChild(c, b), b);
+  assert_equals(b.parentNode, null);
+  assert_equals(a.firstChild, c);
+  assert_equals(c.parentNode, a);
+}, "replaceChild should work in the presence of mutation events.")
+test(function() {
+  var TEST_ID = "findme";
+  var gBody = document.getElementsByTagName("body")[0];
+  var parent = document.createElement("div");
+  gBody.appendChild(parent);
+  var child = document.createElement("div");
+  parent.appendChild(child);
+  var df = document.createDocumentFragment();
+  var fragChild = df.appendChild(document.createElement("div"));
+  fragChild.setAttribute("id", TEST_ID);
+  parent.replaceChild(df, child);
+  assert_equals(document.getElementById(TEST_ID), fragChild, "should not be null");
+}, "Replacing an element with a DocumentFragment should allow a child of the DocumentFragment to be found by Id.")
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Node-textContent.html b/testing/web-platform/tests/dom/nodes/Node-textContent.html
new file mode 100644
index 000000000..9378dec80
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-textContent.html
@@ -0,0 +1,265 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Node.textContent</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+// XXX mutation observers?
+// XXX Range gravitation?
+
+var documents, doctypes;
+setup(function() {
+  documents = [
+    [document, "parser"],
+    [document.implementation.createDocument("", "test", null), "createDocument"],
+    [document.implementation.createHTMLDocument("title"), "createHTMLDocument"],
+  ]
+  doctypes = [
+    [document.doctype, "parser"],
+    [document.implementation.createDocumentType("x", "", ""), "script"],
+  ]
+})
+
+// Getting
+// DocumentFragment, Element:
+test(function() {
+  var element = document.createElement("div")
+  assert_equals(element.textContent, "")
+}, "For an empty Element, textContent should be the empty string")
+
+test(function() {
+  assert_equals(document.createDocumentFragment().textContent, "")
+}, "For an empty DocumentFragment, textContent should be the empty string")
+
+test(function() {
+  var el = document.createElement("div")
+  el.appendChild(document.createComment(" abc "))
+  el.appendChild(document.createTextNode("\tDEF\t"))
+  el.appendChild(document.createProcessingInstruction("x", " ghi "))
+  assert_equals(el.textContent, "\tDEF\t")
+}, "Element with children")
+
+test(function() {
+  var el = document.createElement("div")
+  var child = document.createElement("div")
+  el.appendChild(child)
+  child.appendChild(document.createComment(" abc "))
+  child.appendChild(document.createTextNode("\tDEF\t"))
+  child.appendChild(document.createProcessingInstruction("x", " ghi "))
+  assert_equals(el.textContent, "\tDEF\t")
+}, "Element with descendants")
+
+test(function() {
+  var df = document.createDocumentFragment()
+  df.appendChild(document.createComment(" abc "))
+  df.appendChild(document.createTextNode("\tDEF\t"))
+  df.appendChild(document.createProcessingInstruction("x", " ghi "))
+  assert_equals(df.textContent, "\tDEF\t")
+}, "DocumentFragment with children")
+
+test(function() {
+  var df = document.createDocumentFragment()
+  var child = document.createElement("div")
+  df.appendChild(child)
+  child.appendChild(document.createComment(" abc "))
+  child.appendChild(document.createTextNode("\tDEF\t"))
+  child.appendChild(document.createProcessingInstruction("x", " ghi "))
+  assert_equals(df.textContent, "\tDEF\t")
+}, "DocumentFragment with descendants")
+
+// Text, ProcessingInstruction, Comment:
+test(function() {
+  assert_equals(document.createTextNode("").textContent, "")
+}, "For an empty Text, textContent should be the empty string")
+
+test(function() {
+  assert_equals(document.createProcessingInstruction("x", "").textContent, "")
+}, "For an empty ProcessingInstruction, textContent should be the empty string")
+
+test(function() {
+  assert_equals(document.createComment("").textContent, "")
+}, "For an empty Comment, textContent should be the empty string")
+
+test(function() {
+  assert_equals(document.createTextNode("abc").textContent, "abc")
+}, "For a Text with data, textContent should be that data")
+
+test(function() {
+  assert_equals(document.createProcessingInstruction("x", "abc").textContent,
+                "abc")
+}, "For a ProcessingInstruction with data, textContent should be that data")
+
+test(function() {
+  assert_equals(document.createComment("abc").textContent, "abc")
+}, "For a Comment with data, textContent should be that data")
+
+// Any other node:
+documents.forEach(function(argument) {
+  var doc = argument[0], creator = argument[1]
+  test(function() {
+    assert_equals(doc.textContent, null)
+  }, "For Documents created by " + creator + ", textContent should be null")
+})
+
+doctypes.forEach(function(argument) {
+  var doctype = argument[0], creator = argument[1]
+  test(function() {
+    assert_equals(doctype.textContent, null)
+  }, "For DocumentType created by " + creator + ", textContent should be null")
+})
+
+// Setting
+// DocumentFragment, Element:
+var arguments = [
+  [null, null],
+  [undefined, null],
+  ["", null],
+  [42, "42"],
+  ["abc", "abc"],
+  ["<b>xyz<\/b>", "<b>xyz<\/b>"],
+  ["d\0e", "d\0e"]
+  // XXX unpaired surrogate?
+]
+arguments.forEach(function(aValue) {
+  var argument = aValue[0], expectation = aValue[1]
+  var check = function(aElementOrDocumentFragment) {
+    if (expectation === null) {
+      assert_equals(aElementOrDocumentFragment.textContent, "")
+      assert_equals(aElementOrDocumentFragment.firstChild, null)
+    } else {
+      assert_equals(aElementOrDocumentFragment.textContent, expectation)
+      assert_equals(aElementOrDocumentFragment.childNodes.length, 1,
+                    "Should have one child")
+      var firstChild = aElementOrDocumentFragment.firstChild
+      assert_true(firstChild instanceof Text, "child should be a Text")
+      assert_equals(firstChild.data, expectation)
+    }
+  }
+
+  test(function() {
+    var el = document.createElement("div")
+    el.textContent = argument
+    check(el)
+  }, "Element without children set to " + format_value(argument))
+
+  test(function() {
+    var el = document.createElement("div")
+    var text = el.appendChild(document.createTextNode(""))
+    el.textContent = argument
+    check(el)
+    assert_equals(text.parentNode, null,
+                  "Preexisting Text should have been removed")
+  }, "Element with empty text node as child set to " + format_value(argument))
+
+  test(function() {
+    var el = document.createElement("div")
+    el.appendChild(document.createComment(" abc "))
+    el.appendChild(document.createTextNode("\tDEF\t"))
+    el.appendChild(document.createProcessingInstruction("x", " ghi "))
+    el.textContent = argument
+    check(el)
+  }, "Element with children set to " + format_value(argument))
+
+  test(function() {
+    var el = document.createElement("div")
+    var child = document.createElement("div")
+    el.appendChild(child)
+    child.appendChild(document.createComment(" abc "))
+    child.appendChild(document.createTextNode("\tDEF\t"))
+    child.appendChild(document.createProcessingInstruction("x", " ghi "))
+    el.textContent = argument
+    check(el)
+    assert_equals(child.childNodes.length, 3,
+                  "Should not have changed the internal structure of the removed nodes.")
+  }, "Element with descendants set to " + format_value(argument))
+
+  test(function() {
+    var df = document.createDocumentFragment()
+    df.textContent = argument
+    check(df)
+  }, "DocumentFragment without children set to " + format_value(argument))
+
+  test(function() {
+    var df = document.createDocumentFragment()
+    var text = df.appendChild(document.createTextNode(""))
+    df.textContent = argument
+    check(df)
+    assert_equals(text.parentNode, null,
+                  "Preexisting Text should have been removed")
+  }, "DocumentFragment with empty text node as child set to " + format_value(argument))
+
+  test(function() {
+    var df = document.createDocumentFragment()
+    df.appendChild(document.createComment(" abc "))
+    df.appendChild(document.createTextNode("\tDEF\t"))
+    df.appendChild(document.createProcessingInstruction("x", " ghi "))
+    df.textContent = argument
+    check(df)
+  }, "DocumentFragment with children set to " + format_value(argument))
+
+  test(function() {
+    var df = document.createDocumentFragment()
+    var child = document.createElement("div")
+    df.appendChild(child)
+    child.appendChild(document.createComment(" abc "))
+    child.appendChild(document.createTextNode("\tDEF\t"))
+    child.appendChild(document.createProcessingInstruction("x", " ghi "))
+    df.textContent = argument
+    check(df)
+    assert_equals(child.childNodes.length, 3,
+                  "Should not have changed the internal structure of the removed nodes.")
+  }, "DocumentFragment with descendants set to " + format_value(argument))
+})
+
+// Text, ProcessingInstruction, Comment:
+test(function() {
+  var text = document.createTextNode("abc")
+  text.textContent = "def"
+  assert_equals(text.textContent, "def")
+  assert_equals(text.data, "def")
+}, "For a Text, textContent should set the data")
+
+test(function() {
+  var pi = document.createProcessingInstruction("x", "abc")
+  pi.textContent = "def"
+  assert_equals(pi.textContent, "def")
+  assert_equals(pi.data, "def")
+  assert_equals(pi.target, "x")
+}, "For a ProcessingInstruction, textContent should set the data")
+
+test(function() {
+  var comment = document.createComment("abc")
+  comment.textContent = "def"
+  assert_equals(comment.textContent, "def")
+  assert_equals(comment.data, "def")
+}, "For a Comment, textContent should set the data")
+
+// Any other node:
+documents.forEach(function(argument) {
+  var doc = argument[0], creator = argument[1]
+  test(function() {
+    var root = doc.documentElement
+    doc.textContent = "a"
+    assert_equals(doc.textContent, null)
+    assert_equals(doc.documentElement, root)
+  }, "For Documents created by " + creator + ", setting textContent should do nothing")
+})
+
+doctypes.forEach(function(argument) {
+  var doctype = argument[0], creator = argument[1]
+  test(function() {
+    var props = {
+      name: doctype.name,
+      publicId: doctype.publicId,
+      systemId: doctype.systemId,
+    }
+    doctype.textContent = "b"
+    assert_equals(doctype.textContent, null)
+    assert_equals(doctype.name, props.name, "name should not change")
+    assert_equals(doctype.publicId, props.publicId, "publicId should not change")
+    assert_equals(doctype.systemId, props.systemId, "systemId should not change")
+  }, "For DocumentType created by " + creator + ", setting textContent should do nothing")
+})
+
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/NodeList-Iterable.html b/testing/web-platform/tests/dom/nodes/NodeList-Iterable.html
new file mode 100644
index 000000000..e1349cd76
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/NodeList-Iterable.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>NodeList Iterable Test</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+    <p id="1"></p>
+    <p id="2"></p>
+    <p id="3"></p>
+    <p id="4"></p>
+    <p id="5"></p>
+<script>
+    var paragraphs;
+    setup(function() {
+        paragraphs = document.querySelectorAll('p');
+    })
+    test(function() {
+        assert_true('length' in paragraphs);
+    }, 'NodeList has length method.');
+    test(function() {
+        assert_true('values' in paragraphs);
+    }, 'NodeList has values method.');
+    test(function() {
+        assert_true('entries' in paragraphs);
+    }, 'NodeList has entries method.');
+    test(function() {
+        assert_true('forEach' in paragraphs);
+    }, 'NodeList has forEach method.');
+    test(function() {
+        assert_true(Symbol.iterator in paragraphs);
+    }, 'NodeList has Symbol.iterator.');
+    test(function() {
+        var ids = "12345", idx=0;
+        for(var node of paragraphs){
+            assert_equals(node.getAttribute('id'), ids[idx++]);
+        }
+    }, 'NodeList is iterable via for-of loop.');
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/ParentNode-append.html b/testing/web-platform/tests/dom/nodes/ParentNode-append.html
new file mode 100644
index 000000000..dcc398f3f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ParentNode-append.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>ParentNode.append</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-parentnode-append">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+
+function test_append(node, nodeName) {
+
+    test(function() {
+        var parent = node.cloneNode();
+        parent.append();
+        assert_array_equals(parent.childNodes, []);
+    }, nodeName + '.append() without any argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        parent.append(null);
+        assert_equals(parent.childNodes[0].textContent, 'null');
+    }, nodeName + '.append() with null as an argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        parent.append(undefined);
+        assert_equals(parent.childNodes[0].textContent, 'undefined');
+    }, nodeName + '.append() with undefined as an argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        parent.append('text');
+        assert_equals(parent.childNodes[0].textContent, 'text');
+    }, nodeName + '.append() with only text as an argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        parent.append(x);
+        assert_array_equals(parent.childNodes, [x]);
+    }, nodeName + '.append() with only one element as an argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var child = document.createElement('test');
+        parent.appendChild(child);
+        parent.append(null);
+        assert_equals(parent.childNodes[0], child);
+        assert_equals(parent.childNodes[1].textContent, 'null');
+    }, nodeName + '.append() with null as an argument, on a parent having a child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        var child = document.createElement('test');
+        parent.appendChild(child);
+        parent.append(x, 'text');
+        assert_equals(parent.childNodes[0], child);
+        assert_equals(parent.childNodes[1], x);
+        assert_equals(parent.childNodes[2].textContent, 'text');
+    }, nodeName + '.append() with one element and text as argument, on a parent having a child.');
+}
+
+test_append(document.createElement('div'), 'Element');
+test_append(document.createDocumentFragment(), 'DocumentFrgment');
+</script>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/ParentNode-prepend.html b/testing/web-platform/tests/dom/nodes/ParentNode-prepend.html
new file mode 100644
index 000000000..644693ffe
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ParentNode-prepend.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>ParentNode.prepend</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-parentnode-prepend">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+
+function test_prepend(node, nodeName) {
+
+    test(function() {
+        var parent = node.cloneNode();
+        parent.prepend();
+        assert_array_equals(parent.childNodes, []);
+    }, nodeName + '.prepend() without any argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        parent.prepend(null);
+        assert_equals(parent.childNodes[0].textContent, 'null');
+    }, nodeName + '.prepend() with null as an argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        parent.prepend(undefined);
+        assert_equals(parent.childNodes[0].textContent, 'undefined');
+    }, nodeName + '.prepend() with undefined as an argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        parent.prepend('text');
+        assert_equals(parent.childNodes[0].textContent, 'text');
+    }, nodeName + '.prepend() with only text as an argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        parent.prepend(x);
+        assert_array_equals(parent.childNodes, [x]);
+    }, nodeName + '.prepend() with only one element as an argument, on a parent having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var child = document.createElement('test');
+        parent.appendChild(child);
+        parent.prepend(null);
+        assert_equals(parent.childNodes[0].textContent, 'null');
+        assert_equals(parent.childNodes[1], child);
+    }, nodeName + '.prepend() with null as an argument, on a parent having a child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        var child = document.createElement('test');
+        parent.appendChild(child);
+        parent.prepend(x, 'text');
+        assert_equals(parent.childNodes[0], x);
+        assert_equals(parent.childNodes[1].textContent, 'text');
+        assert_equals(parent.childNodes[2], child);
+    }, nodeName + '.prepend() with one element and text as argument, on a parent having a child.');
+}
+
+test_prepend(document.createElement('div'), 'Element');
+test_prepend(document.createDocumentFragment(), 'DocumentFrgment');
+</script>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All-content.html b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All-content.html
new file mode 100644
index 000000000..affb00af2
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All-content.html
@@ -0,0 +1,377 @@
+<!DOCTYPE html>
+<html id="html" lang="en">
+<head id="head">
+  <meta id="meta" charset="UTF-8">
+  <title id="title">Selectors-API Test Suite: HTML with Selectors Level 2 using TestHarness: Test Document</title>
+
+  <!-- Links for :link and :visited pseudo-class test -->
+  <link id="pseudo-link-link1" href="">
+  <link id="pseudo-link-link2" href="http://example.org/">
+  <link id="pseudo-link-link3">
+  <style>
+  @namespace ns "http://www.w3.org/1999/xhtml";
+   /* Declare the namespace prefix used in tests. This declaration should not be used by the API. */
+  </style>
+</head>
+<body id="body">
+<div id="root">
+  <div id="target"></div>
+
+  <div id="universal">
+    <p id="universal-p1">Universal selector tests inside element with <code id="universal-code1">id="universal"</code>.</p>
+    <hr id="universal-hr1">
+    <pre id="universal-pre1">Some preformatted text with some <span id="universal-span1">embedded code</span></pre>
+    <p id="universal-p2">This is a normal link: <a id="universal-a1" href="http://www.w3.org/">W3C</a></p>
+    <address id="universal-address1">Some more nested elements <code id="universal-code2"><a href="#" id="universal-a2">code hyperlink</a></code></address>
+  </div>
+
+  <div id="attr-presence">
+    <div class="attr-presence-div1" id="attr-presence-div1" align="center"></div>
+    <div class="attr-presence-div2" id="attr-presence-div2" align=""></div>
+    <div class="attr-presence-div3" id="attr-presence-div3" valign="center"></div>
+    <div class="attr-presence-div4" id="attr-presence-div4" alignv="center"></div>
+    <p id="attr-presence-p1"><a  id="attr-presence-a1" tItLe=""></a><span id="attr-presence-span1" TITLE="attr-presence-span1"></span></p>
+    <pre id="attr-presence-pre1" data-attr-presence="pre1"></pre>
+    <blockquote id="attr-presence-blockquote1" data-attr-presence="blockquote1"></blockquote>
+    <ul id="attr-presence-ul1" data-中文=""></ul>
+
+    <select id="attr-presence-select1">
+      <option id="attr-presence-select1-option1">A</option>
+      <option id="attr-presence-select1-option2">B</option>
+      <option id="attr-presence-select1-option3">C</option>
+      <option id="attr-presence-select1-option4">D</option>
+    </select>
+    <select id="attr-presence-select2">
+      <option id="attr-presence-select2-option1">A</option>
+      <option id="attr-presence-select2-option2">B</option>
+      <option id="attr-presence-select2-option3">C</option>
+      <option id="attr-presence-select2-option4" selected="selected">D</option>
+    </select>
+    <select id="attr-presence-select3" multiple="multiple">
+      <option id="attr-presence-select3-option1">A</option>
+      <option id="attr-presence-select3-option2" selected="">B</option>
+      <option id="attr-presence-select3-option3" selected="selected">C</option>
+      <option id="attr-presence-select3-option4">D</option>
+    </select>
+  </div>
+
+  <div id="attr-value">
+    <div id="attr-value-div1" align="center"></div>
+      <div id="attr-value-div2" align=""></div>
+      <div id="attr-value-div3" data-attr-value="&#xE9;"></div>
+      <div id="attr-value-div4" data-attr-value_foo="&#xE9;"></div>
+
+    <form id="attr-value-form1">
+      <input id="attr-value-input1" type="text">
+      <input id="attr-value-input2" type="password">
+      <input id="attr-value-input3" type="hidden">
+      <input id="attr-value-input4" type="radio">
+      <input id="attr-value-input5" type="checkbox">
+      <input id="attr-value-input6" type="radio">
+      <input id="attr-value-input7" type="text">
+      <input id="attr-value-input8" type="hidden">
+      <input id="attr-value-input9" type="radio">
+    </form>
+
+    <div id="attr-value-div5" data-attr-value="中文"></div>
+  </div>
+
+  <div id="attr-whitespace">
+    <div id="attr-whitespace-div1" class="foo div1 bar"></div>
+      <div id="attr-whitespace-div2" class=""></div>
+      <div id="attr-whitespace-div3" class="foo div3 bar"></div>
+
+      <div id="attr-whitespace-div4" data-attr-whitespace="foo &#xE9; bar"></div>
+      <div id="attr-whitespace-div5" data-attr-whitespace_foo="&#xE9; foo"></div>
+
+    <a id="attr-whitespace-a1" rel="next bookmark"></a>
+    <a id="attr-whitespace-a2" rel="tag nofollow"></a>
+    <a id="attr-whitespace-a3" rel="tag bookmark"></a>
+    <a id="attr-whitespace-a4" rel="book mark"></a> <!-- Intentional space in "book mark" -->
+    <a id="attr-whitespace-a5" rel="nofollow"></a>
+    <a id="attr-whitespace-a6" rev="bookmark nofollow"></a>
+    <a id="attr-whitespace-a7" rel="prev next tag alternate nofollow author help icon noreferrer prefetch search stylesheet tag"></a>
+
+    <p id="attr-whitespace-p1" title="Chinese 中文 characters"></p>
+  </div>
+
+  <div id="attr-hyphen">
+    <div id="attr-hyphen-div1"></div>
+      <div id="attr-hyphen-div2" lang="fr"></div>
+      <div id="attr-hyphen-div3" lang="en-AU"></div>
+      <div id="attr-hyphen-div4" lang="es"></div>
+  </div>
+
+  <div id="attr-begins">
+    <a id="attr-begins-a1" href="http://www.example.org"></a>
+    <a id="attr-begins-a2" href="http://example.org/"></a>
+    <a id="attr-begins-a3" href="http://www.example.com/"></a>
+
+      <div id="attr-begins-div1" lang="fr"></div>
+      <div id="attr-begins-div2" lang="en-AU"></div>
+      <div id="attr-begins-div3" lang="es"></div>
+      <div id="attr-begins-div4" lang="en-US"></div>
+      <div id="attr-begins-div5" lang="en"></div>
+
+    <p id="attr-begins-p1" class=" apple"></p> <!-- Intentional space in class value " apple". -->
+  </div>
+
+  <div id="attr-ends">
+    <a id="attr-ends-a1" href="http://www.example.org"></a>
+    <a id="attr-ends-a2" href="http://example.org/"></a>
+    <a id="attr-ends-a3" href="http://www.example.org"></a>
+
+      <div id="attr-ends-div1" lang="fr"></div>
+      <div id="attr-ends-div2" lang="de-CH"></div>
+      <div id="attr-ends-div3" lang="es"></div>
+      <div id="attr-ends-div4" lang="fr-CH"></div>
+
+    <p id="attr-ends-p1" class="apple "></p> <!-- Intentional space in class value "apple ". -->
+  </div>
+
+  <div id="attr-contains">
+    <a id="attr-contains-a1" href="http://www.example.org"></a>
+    <a id="attr-contains-a2" href="http://example.org/"></a>
+    <a id="attr-contains-a3" href="http://www.example.com/"></a>
+
+      <div id="attr-contains-div1" lang="fr"></div>
+      <div id="attr-contains-div2" lang="en-AU"></div>
+      <div id="attr-contains-div3" lang="de-CH"></div>
+      <div id="attr-contains-div4" lang="es"></div>
+      <div id="attr-contains-div5" lang="fr-CH"></div>
+      <div id="attr-contains-div6" lang="en-US"></div>
+
+    <p id="attr-contains-p1" class=" apple banana orange "></p>
+  </div>
+
+  <div id="pseudo-nth">
+    <table id="pseudo-nth-table1">
+      <tr id="pseudo-nth-tr1"><td id="pseudo-nth-td1"></td><td id="pseudo-nth-td2"></td><td id="pseudo-nth-td3"></td><td id="pseudo-nth-td4"></td><td id="pseudo-nth--td5"></td><td id="pseudo-nth-td6"></td></tr>
+      <tr id="pseudo-nth-tr2"><td id="pseudo-nth-td7"></td><td id="pseudo-nth-td8"></td><td id="pseudo-nth-td9"></td><td id="pseudo-nth-td10"></td><td id="pseudo-nth-td11"></td><td id="pseudo-nth-td12"></td></tr>
+      <tr id="pseudo-nth-tr3"><td id="pseudo-nth-td13"></td><td id="pseudo-nth-td14"></td><td id="pseudo-nth-td15"></td><td id="pseudo-nth-td16"></td><td id="pseudo-nth-td17"></td><td id="pseudo-nth-td18"></td></tr>
+    </table>
+
+    <ol id="pseudo-nth-ol1">
+      <li id="pseudo-nth-li1"></li>
+      <li id="pseudo-nth-li2"></li>
+      <li id="pseudo-nth-li3"></li>
+      <li id="pseudo-nth-li4"></li>
+      <li id="pseudo-nth-li5"></li>
+      <li id="pseudo-nth-li6"></li>
+      <li id="pseudo-nth-li7"></li>
+      <li id="pseudo-nth-li8"></li>
+      <li id="pseudo-nth-li9"></li>
+      <li id="pseudo-nth-li10"></li>
+      <li id="pseudo-nth-li11"></li>
+      <li id="pseudo-nth-li12"></li>
+    </ol>
+
+    <p id="pseudo-nth-p1">
+      <span id="pseudo-nth-span1">span1</span>
+      <em id="pseudo-nth-em1">em1</em>
+      <!-- comment node-->
+      <em id="pseudo-nth-em2">em2</em>
+      <span id="pseudo-nth-span2">span2</span>
+      <strong id="pseudo-nth-strong1">strong1</strong>
+      <em id="pseudo-nth-em3">em3</em>
+      <span id="pseudo-nth-span3">span3</span>
+      <span id="pseudo-nth-span4">span4</span>
+      <strong id="pseudo-nth-strong2">strong2</strong>
+      <em id="pseudo-nth-em4">em4</em>
+    </p>
+  </div>
+
+  <div id="pseudo-first-child">
+    <div id="pseudo-first-child-div1"></div>
+    <div id="pseudo-first-child-div2"></div>
+    <div id="pseudo-first-child-div3"></div>
+
+    <p id="pseudo-first-child-p1"><span id="pseudo-first-child-span1"></span><span id="pseudo-first-child-span2"></span></p>
+    <p id="pseudo-first-child-p2"><span id="pseudo-first-child-span3"></span><span id="pseudo-first-child-span4"></span></p>
+    <p id="pseudo-first-child-p3"><span id="pseudo-first-child-span5"></span><span id="pseudo-first-child-span6"></span></p>
+  </div>
+
+  <div id="pseudo-last-child">
+    <p id="pseudo-last-child-p1"><span id="pseudo-last-child-span1"></span><span id="pseudo-last-child-span2"></span></p>
+    <p id="pseudo-last-child-p2"><span id="pseudo-last-child-span3"></span><span id="pseudo-last-child-span4"></span></p>
+    <p id="pseudo-last-child-p3"><span id="pseudo-last-child-span5"></span><span id="pseudo-last-child-span6"></span></p>
+
+    <div id="pseudo-last-child-div1"></div>
+    <div id="pseudo-last-child-div2"></div>
+    <div id="pseudo-last-child-div3"></div>
+  </div>
+
+  <div id="pseudo-only">
+    <p id="pseudo-only-p1">
+      <span id="pseudo-only-span1"></span>
+    </p>
+    <p id="pseudo-only-p2">
+      <span id="pseudo-only-span2"></span>
+      <span id="pseudo-only-span3"></span>
+    </p>
+    <p id="pseudo-only-p3">
+      <span id="pseudo-only-span4"></span>
+      <em id="pseudo-only-em1"></em>
+      <span id="pseudo-only-span5"></span>
+    </p>
+  </div>>
+
+  <div id="pseudo-empty">
+    <p id="pseudo-empty-p1"></p>
+    <p id="pseudo-empty-p2"><!-- comment node --></p>
+    <p id="pseudo-empty-p3"> </p>
+    <p id="pseudo-empty-p4">Text node</p>
+    <p id="pseudo-empty-p5"><span id="pseudo-empty-span1"></span></p>
+  </div>
+
+  <div id="pseudo-link">
+    <a id="pseudo-link-a1" href="">with href</a>
+    <a id="pseudo-link-a2" href="http://example.org/">with href</a>
+    <a id="pseudo-link-a3">without href</a>
+    <map name="pseudo-link-map1" id="pseudo-link-map1">
+      <area id="pseudo-link-area1" href="">
+      <area id="pseudo-link-area2">
+    </map>
+  </div>
+
+  <div id="pseudo-lang">
+    <div id="pseudo-lang-div1"></div>
+      <div id="pseudo-lang-div2" lang="fr"></div>
+      <div id="pseudo-lang-div3" lang="en-AU"></div>
+      <div id="pseudo-lang-div4" lang="es"></div>
+  </div>
+
+  <div id="pseudo-ui">
+    <input id="pseudo-ui-input1" type="text">
+    <input id="pseudo-ui-input2" type="password">
+    <input id="pseudo-ui-input3" type="radio">
+    <input id="pseudo-ui-input4" type="radio" checked="checked">
+    <input id="pseudo-ui-input5" type="checkbox">
+    <input id="pseudo-ui-input6" type="checkbox" checked="checked">
+    <input id="pseudo-ui-input7" type="submit">
+    <input id="pseudo-ui-input8" type="button">
+    <input id="pseudo-ui-input9" type="hidden">
+    <textarea id="pseudo-ui-textarea1"></textarea>
+    <button id="pseudo-ui-button1">Enabled</button>
+
+    <input id="pseudo-ui-input10" disabled="disabled" type="text">
+    <input id="pseudo-ui-input11" disabled="disabled" type="password">
+    <input id="pseudo-ui-input12" disabled="disabled" type="radio">
+    <input id="pseudo-ui-input13" disabled="disabled" type="radio" checked="checked">
+    <input id="pseudo-ui-input14" disabled="disabled" type="checkbox">
+    <input id="pseudo-ui-input15" disabled="disabled" type="checkbox" checked="checked">
+    <input id="pseudo-ui-input16" disabled="disabled" type="submit">
+    <input id="pseudo-ui-input17" disabled="disabled" type="button">
+    <input id="pseudo-ui-input18" disabled="disabled" type="hidden">
+    <textarea id="pseudo-ui-textarea2" disabled="disabled"></textarea>
+    <button id="pseudo-ui-button2" disabled="disabled">Disabled</button>
+  </div>
+
+  <div id="not">
+    <div id="not-div1"></div>
+    <div id="not-div2"></div>
+    <div id="not-div3"></div>
+
+    <p id="not-p1"><span id="not-span1"></span><em id="not-em1"></em></p>
+    <p id="not-p2"><span id="not-span2"></span><em id="not-em2"></em></p>
+    <p id="not-p3"><span id="not-span3"></span><em id="not-em3"></em></p>
+  </div>
+
+  <div id="pseudo-element">All pseudo-element tests</div>
+
+  <div id="class">
+    <p id="class-p1" class="foo class-p bar"></p>
+    <p id="class-p2" class="class-p foo bar"></p>
+    <p id="class-p3" class="foo bar class-p"></p>
+
+    <!-- All permutations of the classes should match -->
+    <div id="class-div1" class="apple orange banana"></div>
+    <div id="class-div2" class="apple banana orange"></div>
+    <p id="class-p4" class="orange apple banana"></p>
+    <div id="class-div3" class="orange banana apple"></div>
+    <p id="class-p6" class="banana apple orange"></p>
+    <div id="class-div4" class="banana orange apple"></div>
+    <div id="class-div5" class="apple orange"></div>
+    <div id="class-div6" class="apple banana"></div>
+    <div id="class-div7" class="orange banana"></div>
+
+    <span id="class-span1" class="台北Táiběi 台北"></span>
+    <span id="class-span2" class="台北"></span>
+
+    <span id="class-span3" class="foo:bar"></span>
+    <span id="class-span4" class="test.foo[5]bar"></span>
+  </div>
+
+  <div id="id">
+    <div id="id-div1"></div>
+    <div id="id-div2"></div>
+
+    <ul id="id-ul1">
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+    </ul>
+
+    <span id="台北Táiběi"></span>
+    <span id="台北"></span>
+
+    <span id="#foo:bar"></span>
+    <span id="test.foo[5]bar"></span>
+  </div>
+
+  <div id="descendant">
+    <div id="descendant-div1" class="descendant-div1">
+      <div id="descendant-div2" class="descendant-div2">
+        <div id="descendant-div3" class="descendant-div3">
+        </div>
+      </div>
+    </div>
+    <div id="descendant-div4" class="descendant-div4"></div>
+  </div>
+
+  <div id="child">
+    <div id="child-div1" class="child-div1">
+      <div id="child-div2" class="child-div2">
+        <div id="child-div3" class="child-div3">
+        </div>
+      </div>
+    </div>
+    <div id="child-div4" class="child-div4"></div>
+  </div>
+
+  <div id="adjacent">
+    <div id="adjacent-div1" class="adjacent-div1"></div>
+    <div id="adjacent-div2" class="adjacent-div2">
+      <div id="adjacent-div3" class="adjacent-div3"></div>
+    </div>
+    <div id="adjacent-div4" class="adjacent-div4">
+      <p id="adjacent-p1" class="adjacent-p1"></p>
+      <div id="adjacent-div5" class="adjacent-div5"></div>
+    </div>
+    <div id="adjacent-div6" class="adjacent-div6"></div>
+    <p id="adjacent-p2" class="adjacent-p2"></p>
+    <p id="adjacent-p3" class="adjacent-p3"></p>
+  </div>
+
+  <div id="sibling">
+    <div id="sibling-div1" class="sibling-div"></div>
+    <div id="sibling-div2" class="sibling-div">
+      <div id="sibling-div3" class="sibling-div"></div>
+    </div>
+    <div id="sibling-div4" class="sibling-div">
+      <p id="sibling-p1" class="sibling-p"></p>
+      <div id="sibling-div5" class="sibling-div"></div>
+    </div>
+    <div id="sibling-div6" class="sibling-div"></div>
+    <p id="sibling-p2" class="sibling-p"></p>
+    <p id="sibling-p3" class="sibling-p"></p>
+  </div>
+
+  <div id="group">
+    <em id="group-em1"></em>
+    <strong id="group-strong1"></strong>
+  </div>
+</div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All-content.xht b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All-content.xht
new file mode 100644
index 000000000..14faa9bd4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All-content.xht
@@ -0,0 +1,372 @@
+<!DOCTYPE html>
+<html id="html" lang="en" xmlns="http://www.w3.org/1999/xhtml">
+<head id="head">
+  <title id="title">Selectors-API Test Suite: HTML with Selectors Level 2 using TestHarness: Test Document</title>
+
+  <!-- Links for :link and :visited pseudo-class test -->
+  <link id="pseudo-link-link1" href=""/>
+  <link id="pseudo-link-link2" href="http://example.org/"/>
+  <link id="pseudo-link-link3"/>
+</head>
+<body id="body">
+<div id="root">
+  <div id="target"></div>
+
+  <div id="universal">
+    <p id="universal-p1">Universal selector tests inside element with <code id="universal-code1">id="universal"</code>.</p>
+    <hr id="universal-hr1"/>
+    <pre id="universal-pre1">Some preformatted text with some <span id="universal-span1">embedded code</span></pre>
+    <p id="universal-p2">This is a normal link: <a id="universal-a1" href="http://www.w3.org/">W3C</a></p>
+    <address id="universal-address1">Some more nested elements <code id="universal-code2"><a href="#" id="universal-a2">code hyperlink</a></code></address>
+  </div>
+
+  <div id="attr-presence">
+    <div class="attr-presence-div1" id="attr-presence-div1" align="center"></div>
+    <div class="attr-presence-div2" id="attr-presence-div2" align=""></div>
+    <div class="attr-presence-div3" id="attr-presence-div3" valign="center"></div>
+    <div class="attr-presence-div4" id="attr-presence-div4" alignv="center"></div>
+    <p id="attr-presence-p1"><a  id="attr-presence-a1" tItLe=""></a><span id="attr-presence-span1" TITLE="attr-presence-span1"></span></p>
+    <pre id="attr-presence-pre1" data-attr-presence="pre1"></pre>
+    <blockquote id="attr-presence-blockquote1" data-attr-presence="blockquote1"></blockquote>
+    <ul id="attr-presence-ul1" data-中文=""></ul>
+
+    <select id="attr-presence-select1">
+      <option id="attr-presence-select1-option1">A</option>
+      <option id="attr-presence-select1-option2">B</option>
+      <option id="attr-presence-select1-option3">C</option>
+      <option id="attr-presence-select1-option4">D</option>
+    </select>
+    <select id="attr-presence-select2">
+      <option id="attr-presence-select2-option1">A</option>
+      <option id="attr-presence-select2-option2">B</option>
+      <option id="attr-presence-select2-option3">C</option>
+      <option id="attr-presence-select2-option4" selected="selected">D</option>
+    </select>
+    <select id="attr-presence-select3" multiple="multiple">
+      <option id="attr-presence-select3-option1">A</option>
+      <option id="attr-presence-select3-option2" selected="">B</option>
+      <option id="attr-presence-select3-option3" selected="selected">C</option>
+      <option id="attr-presence-select3-option4">D</option>
+    </select>
+  </div>
+
+  <div id="attr-value">
+    <div id="attr-value-div1" align="center"></div>
+      <div id="attr-value-div2" align=""></div>
+      <div id="attr-value-div3" data-attr-value="&#xE9;"></div>
+      <div id="attr-value-div4" data-attr-value_foo="&#xE9;"></div>
+
+    <form id="attr-value-form1">
+      <input id="attr-value-input1" type="text"/>
+      <input id="attr-value-input2" type="password"/>
+      <input id="attr-value-input3" type="hidden"/>
+      <input id="attr-value-input4" type="radio"/>
+      <input id="attr-value-input5" type="checkbox"/>
+      <input id="attr-value-input6" type="radio"/>
+      <input id="attr-value-input7" type="text"/>
+      <input id="attr-value-input8" type="hidden"/>
+      <input id="attr-value-input9" type="radio"/>
+    </form>
+
+    <div id="attr-value-div5" data-attr-value="中文"></div>
+  </div>
+
+  <div id="attr-whitespace">
+    <div id="attr-whitespace-div1" class="foo div1 bar"></div>
+      <div id="attr-whitespace-div2" class=""></div>
+      <div id="attr-whitespace-div3" class="foo div3 bar"></div>
+
+      <div id="attr-whitespace-div4" data-attr-whitespace="foo &#xE9; bar"></div>
+      <div id="attr-whitespace-div5" data-attr-whitespace_foo="&#xE9; foo"></div>
+
+    <a id="attr-whitespace-a1" rel="next bookmark"></a>
+    <a id="attr-whitespace-a2" rel="tag nofollow"></a>
+    <a id="attr-whitespace-a3" rel="tag bookmark"></a>
+    <a id="attr-whitespace-a4" rel="book mark"></a> <!-- Intentional space in "book mark" -->
+    <a id="attr-whitespace-a5" rel="nofollow"></a>
+    <a id="attr-whitespace-a6" rev="bookmark nofollow"></a>
+    <a id="attr-whitespace-a7" rel="prev next tag alternate nofollow author help icon noreferrer prefetch search stylesheet tag"></a>
+
+    <p id="attr-whitespace-p1" title="Chinese 中文 characters"></p>
+  </div>
+
+  <div id="attr-hyphen">
+    <div id="attr-hyphen-div1"></div>
+      <div id="attr-hyphen-div2" lang="fr"></div>
+      <div id="attr-hyphen-div3" lang="en-AU"></div>
+      <div id="attr-hyphen-div4" lang="es"></div>
+  </div>
+
+  <div id="attr-begins">
+    <a id="attr-begins-a1" href="http://www.example.org"></a>
+    <a id="attr-begins-a2" href="http://example.org/"></a>
+    <a id="attr-begins-a3" href="http://www.example.com/"></a>
+
+      <div id="attr-begins-div1" lang="fr"></div>
+      <div id="attr-begins-div2" lang="en-AU"></div>
+      <div id="attr-begins-div3" lang="es"></div>
+      <div id="attr-begins-div4" lang="en-US"></div>
+      <div id="attr-begins-div5" lang="en"></div>
+
+    <p id="attr-begins-p1" class=" apple"></p> <!-- Intentional space in class value " apple". -->
+  </div>
+
+  <div id="attr-ends">
+    <a id="attr-ends-a1" href="http://www.example.org"></a>
+    <a id="attr-ends-a2" href="http://example.org/"></a>
+    <a id="attr-ends-a3" href="http://www.example.org"></a>
+
+      <div id="attr-ends-div1" lang="fr"></div>
+      <div id="attr-ends-div2" lang="de-CH"></div>
+      <div id="attr-ends-div3" lang="es"></div>
+      <div id="attr-ends-div4" lang="fr-CH"></div>
+
+    <p id="attr-ends-p1" class="apple "></p> <!-- Intentional space in class value "apple ". -->
+  </div>
+
+  <div id="attr-contains">
+    <a id="attr-contains-a1" href="http://www.example.org"></a>
+    <a id="attr-contains-a2" href="http://example.org/"></a>
+    <a id="attr-contains-a3" href="http://www.example.com/"></a>
+
+      <div id="attr-contains-div1" lang="fr"></div>
+      <div id="attr-contains-div2" lang="en-AU"></div>
+      <div id="attr-contains-div3" lang="de-CH"></div>
+      <div id="attr-contains-div4" lang="es"></div>
+      <div id="attr-contains-div5" lang="fr-CH"></div>
+      <div id="attr-contains-div6" lang="en-US"></div>
+
+    <p id="attr-contains-p1" class=" apple banana orange "></p>
+  </div>
+
+  <div id="pseudo-nth">
+    <table id="pseudo-nth-table1">
+      <tr id="pseudo-nth-tr1"><td id="pseudo-nth-td1"></td><td id="pseudo-nth-td2"></td><td id="pseudo-nth-td3"></td><td id="pseudo-nth-td4"></td><td id="pseudo-nth--td5"></td><td id="pseudo-nth-td6"></td></tr>
+      <tr id="pseudo-nth-tr2"><td id="pseudo-nth-td7"></td><td id="pseudo-nth-td8"></td><td id="pseudo-nth-td9"></td><td id="pseudo-nth-td10"></td><td id="pseudo-nth-td11"></td><td id="pseudo-nth-td12"></td></tr>
+      <tr id="pseudo-nth-tr3"><td id="pseudo-nth-td13"></td><td id="pseudo-nth-td14"></td><td id="pseudo-nth-td15"></td><td id="pseudo-nth-td16"></td><td id="pseudo-nth-td17"></td><td id="pseudo-nth-td18"></td></tr>
+    </table>
+
+    <ol id="pseudo-nth-ol1">
+      <li id="pseudo-nth-li1"></li>
+      <li id="pseudo-nth-li2"></li>
+      <li id="pseudo-nth-li3"></li>
+      <li id="pseudo-nth-li4"></li>
+      <li id="pseudo-nth-li5"></li>
+      <li id="pseudo-nth-li6"></li>
+      <li id="pseudo-nth-li7"></li>
+      <li id="pseudo-nth-li8"></li>
+      <li id="pseudo-nth-li9"></li>
+      <li id="pseudo-nth-li10"></li>
+      <li id="pseudo-nth-li11"></li>
+      <li id="pseudo-nth-li12"></li>
+    </ol>
+
+    <p id="pseudo-nth-p1">
+      <span id="pseudo-nth-span1">span1</span>
+      <em id="pseudo-nth-em1">em1</em>
+      <!-- comment node-->
+      <em id="pseudo-nth-em2">em2</em>
+      <span id="pseudo-nth-span2">span2</span>
+      <strong id="pseudo-nth-strong1">strong1</strong>
+      <em id="pseudo-nth-em3">em3</em>
+      <span id="pseudo-nth-span3">span3</span>
+      <span id="pseudo-nth-span4">span4</span>
+      <strong id="pseudo-nth-strong2">strong2</strong>
+      <em id="pseudo-nth-em4">em4</em>
+    </p>
+  </div>
+
+  <div id="pseudo-first-child">
+    <div id="pseudo-first-child-div1"></div>
+    <div id="pseudo-first-child-div2"></div>
+    <div id="pseudo-first-child-div3"></div>
+
+    <p id="pseudo-first-child-p1"><span id="pseudo-first-child-span1"></span><span id="pseudo-first-child-span2"></span></p>
+    <p id="pseudo-first-child-p2"><span id="pseudo-first-child-span3"></span><span id="pseudo-first-child-span4"></span></p>
+    <p id="pseudo-first-child-p3"><span id="pseudo-first-child-span5"></span><span id="pseudo-first-child-span6"></span></p>
+  </div>
+
+  <div id="pseudo-last-child">
+    <p id="pseudo-last-child-p1"><span id="pseudo-last-child-span1"></span><span id="pseudo-last-child-span2"></span></p>
+    <p id="pseudo-last-child-p2"><span id="pseudo-last-child-span3"></span><span id="pseudo-last-child-span4"></span></p>
+    <p id="pseudo-last-child-p3"><span id="pseudo-last-child-span5"></span><span id="pseudo-last-child-span6"></span></p>
+
+    <div id="pseudo-last-child-div1"></div>
+    <div id="pseudo-last-child-div2"></div>
+    <div id="pseudo-last-child-div3"></div>
+  </div>
+
+  <div id="pseudo-only">
+    <p id="pseudo-only-p1">
+      <span id="pseudo-only-span1"></span>
+    </p>
+    <p id="pseudo-only-p2">
+      <span id="pseudo-only-span2"></span>
+      <span id="pseudo-only-span3"></span>
+    </p>
+    <p id="pseudo-only-p3">
+      <span id="pseudo-only-span4"></span>
+      <em id="pseudo-only-em1"></em>
+      <span id="pseudo-only-span5"></span>
+    </p>
+  </div>>
+
+  <div id="pseudo-empty">
+    <p id="pseudo-empty-p1"></p>
+    <p id="pseudo-empty-p2"><!-- comment node --></p>
+    <p id="pseudo-empty-p3"> </p>
+    <p id="pseudo-empty-p4">Text node</p>
+    <p id="pseudo-empty-p5"><span id="pseudo-empty-span1"></span></p>
+  </div>
+
+  <div id="pseudo-link">
+    <a id="pseudo-link-a1" href="">with href</a>
+    <a id="pseudo-link-a2" href="http://example.org/">with href</a>
+    <a id="pseudo-link-a3">without href</a>
+    <map name="pseudo-link-map1" id="pseudo-link-map1">
+      <area id="pseudo-link-area1" href=""/>
+      <area id="pseudo-link-area2"/>
+    </map>
+  </div>
+
+  <div id="pseudo-lang">
+    <div id="pseudo-lang-div1"></div>
+      <div id="pseudo-lang-div2" lang="fr"></div>
+      <div id="pseudo-lang-div3" lang="en-AU"></div>
+      <div id="pseudo-lang-div4" lang="es"></div>
+  </div>
+
+  <div id="pseudo-ui">
+    <input id="pseudo-ui-input1" type="text"/>
+    <input id="pseudo-ui-input2" type="password"/>
+    <input id="pseudo-ui-input3" type="radio"/>
+    <input id="pseudo-ui-input4" type="radio" checked="checked"/>
+    <input id="pseudo-ui-input5" type="checkbox"/>
+    <input id="pseudo-ui-input6" type="checkbox" checked="checked"/>
+    <input id="pseudo-ui-input7" type="submit"/>
+    <input id="pseudo-ui-input8" type="button"/>
+    <input id="pseudo-ui-input9" type="hidden"/>
+    <textarea id="pseudo-ui-textarea1"></textarea>
+    <button id="pseudo-ui-button1">Enabled</button>
+
+    <input id="pseudo-ui-input10" disabled="disabled" type="text"/>
+    <input id="pseudo-ui-input11" disabled="disabled" type="password"/>
+    <input id="pseudo-ui-input12" disabled="disabled" type="radio"/>
+    <input id="pseudo-ui-input13" disabled="disabled" type="radio" checked="checked"/>
+    <input id="pseudo-ui-input14" disabled="disabled" type="checkbox"/>
+    <input id="pseudo-ui-input15" disabled="disabled" type="checkbox" checked="checked"/>
+    <input id="pseudo-ui-input16" disabled="disabled" type="submit"/>
+    <input id="pseudo-ui-input17" disabled="disabled" type="button"/>
+    <input id="pseudo-ui-input18" disabled="disabled" type="hidden"/>
+    <textarea id="pseudo-ui-textarea2" disabled="disabled"></textarea>
+    <button id="pseudo-ui-button2" disabled="disabled">Disabled</button>
+  </div>
+
+  <div id="not">
+    <div id="not-div1"></div>
+    <div id="not-div2"></div>
+    <div id="not-div3"></div>
+
+    <p id="not-p1"><span id="not-span1"></span><em id="not-em1"></em></p>
+    <p id="not-p2"><span id="not-span2"></span><em id="not-em2"></em></p>
+    <p id="not-p3"><span id="not-span3"></span><em id="not-em3"></em></p>
+  </div>
+
+  <div id="pseudo-element">All pseudo-element tests</div>
+
+  <div id="class">
+    <p id="class-p1" class="foo class-p bar"></p>
+    <p id="class-p2" class="class-p foo bar"></p>
+    <p id="class-p3" class="foo bar class-p"></p>
+
+    <!-- All permutations of the classes should match -->
+    <div id="class-div1" class="apple orange banana"></div>
+    <div id="class-div2" class="apple banana orange"></div>
+    <p id="class-p4" class="orange apple banana"></p>
+    <div id="class-div3" class="orange banana apple"></div>
+    <p id="class-p6" class="banana apple orange"></p>
+    <div id="class-div4" class="banana orange apple"></div>
+    <div id="class-div5" class="apple orange"></div>
+    <div id="class-div6" class="apple banana"></div>
+    <div id="class-div7" class="orange banana"></div>
+
+    <span id="class-span1" class="台北Táiběi 台北"></span>
+    <span id="class-span2" class="台北"></span>
+
+    <span id="class-span3" class="foo:bar"></span>
+    <span id="class-span4" class="test.foo[5]bar"></span>
+  </div>
+
+  <div id="id">
+    <div id="id-div1"></div>
+    <div id="id-div2"></div>
+
+    <ul id="id-ul1">
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+    </ul>
+
+    <span id="台北Táiběi"></span>
+    <span id="台北"></span>
+
+    <span id="#foo:bar"></span>
+    <span id="test.foo[5]bar"></span>
+  </div>
+
+  <div id="descendant">
+    <div id="descendant-div1" class="descendant-div1">
+      <div id="descendant-div2" class="descendant-div2">
+        <div id="descendant-div3" class="descendant-div3">
+        </div>
+      </div>
+    </div>
+    <div id="descendant-div4" class="descendant-div4"></div>
+  </div>
+
+  <div id="child">
+    <div id="child-div1" class="child-div1">
+      <div id="child-div2" class="child-div2">
+        <div id="child-div3" class="child-div3">
+        </div>
+      </div>
+    </div>
+    <div id="child-div4" class="child-div4"></div>
+  </div>
+
+  <div id="adjacent">
+    <div id="adjacent-div1" class="adjacent-div1"></div>
+    <div id="adjacent-div2" class="adjacent-div2">
+      <div id="adjacent-div3" class="adjacent-div3"></div>
+    </div>
+    <div id="adjacent-div4" class="adjacent-div4">
+      <p id="adjacent-p1" class="adjacent-p1"></p>
+      <div id="adjacent-div5" class="adjacent-div5"></div>
+    </div>
+    <div id="adjacent-div6" class="adjacent-div6"></div>
+    <p id="adjacent-p2" class="adjacent-p2"></p>
+    <p id="adjacent-p3" class="adjacent-p3"></p>
+  </div>
+
+  <div id="sibling">
+    <div id="sibling-div1" class="sibling-div"></div>
+    <div id="sibling-div2" class="sibling-div">
+      <div id="sibling-div3" class="sibling-div"></div>
+    </div>
+    <div id="sibling-div4" class="sibling-div">
+      <p id="sibling-p1" class="sibling-p"></p>
+      <div id="sibling-div5" class="sibling-div"></div>
+    </div>
+    <div id="sibling-div6" class="sibling-div"></div>
+    <p id="sibling-p2" class="sibling-p"></p>
+    <p id="sibling-p3" class="sibling-p"></p>
+  </div>
+
+  <div id="group">
+    <em id="group-em1"></em>
+    <strong id="group-strong1"></strong>
+  </div>
+</div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All-xht.xht b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All-xht.xht
new file mode 100644
index 000000000..7a673202b
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All-xht.xht
@@ -0,0 +1,114 @@
+<!DOCTYPE html>
+<html id="html" lang="en" xmlns="http://www.w3.org/1999/xhtml">
+<head id="head">
+<title>Selectors-API Test Suite: XHTML</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="selectors.js"></script>
+<script src="ParentNode-querySelector-All.js"></script>
+<style>iframe { visibility: hidden; position: absolute; }</style>
+</head>
+<body>
+<div id="log">This test requires JavaScript.</div>
+
+<script><![CDATA[
+async_test(function() {
+  var frame = document.createElement("iframe");
+  frame.onload = this.step_func_done(init);
+  frame.src = "ParentNode-querySelector-All-content.xht#target";
+  document.body.appendChild(frame);
+})
+
+function init(e) {
+  /*
+   * This test suite tests Selectors API methods in 4 different contexts:
+   * 1. Document node
+   * 2. In-document Element node
+   * 3. Detached Element node (an element with no parent, not in the document)
+   * 4. Document Fragment node
+   *
+   * For each context, the following tests are run:
+   *
+   * The interface check tests ensure that each type of node exposes the Selectors API methods
+   *
+   * The special selector tests verify the result of passing special values for the selector parameter,
+   * to ensure that the correct WebIDL processing is performed, such as stringification of null and
+   * undefined and missing parameter. The universal selector is also tested here, rather than with the
+   * rest of ordinary selectors for practical reasons.
+   *
+   * The static list verification tests ensure that the node lists returned by the method remain unchanged
+   * due to subsequent document modication, and that a new list is generated each time the method is
+   * invoked based on the current state of the document.
+   *
+   * The invalid selector tests ensure that SyntaxError is thrown for invalid forms of selectors
+   *
+   * The valid selector tests check the result from querying many different types of selectors, with a
+   * list of expected elements. This checks that querySelector() always returns the first result from
+   * querySelectorAll(), and that all matching elements are correctly returned in tree-order. The tests
+   * can be limited by specifying the test types to run, using the testType variable. The constants for this
+   * can be found in selectors.js.
+   *
+   * All the selectors tested for both the valid and invalid selector tests are found in selectors.js.
+   * See comments in that file for documentation of the format used.
+   *
+   * The ParentNode-querySelector-All.js file contains all the common test functions for running each of the aforementioned tests
+   */
+
+  var testType = TEST_QSA;
+  var docType  = "xhtml"; // Only run tests suitable for XHTML
+
+  // Prepare the nodes for testing
+  var doc = e.target.contentDocument;                 // Document Node tests
+
+  var element = doc.getElementById("root");   // In-document Element Node tests
+
+  //Setup the namespace tests
+  setupSpecialElements(doc, element);
+
+  var outOfScope = element.cloneNode(true);   // Append this to the body before running the in-document
+                                               // Element tests, but after running the Document tests. This
+                                               // tests that no elements that are not descendants of element
+                                               // are selected.
+
+  traverse(outOfScope, function(elem) {        // Annotate each element as being a clone; used for verifying
+    elem.setAttribute("data-clone", "");     // that none of these elements ever match.
+  });
+
+
+  var detached = element.cloneNode(true);     // Detached Element Node tests
+
+  var fragment = doc.createDocumentFragment(); // Fragment Node tests
+  fragment.appendChild(element.cloneNode(true));
+
+  // Setup Tests
+  interfaceCheck("Document", doc);
+  interfaceCheck("Detached Element", detached);
+  interfaceCheck("Fragment", fragment);
+  interfaceCheck("In-document Element", element);
+
+  runSpecialSelectorTests("Document", doc);
+  runSpecialSelectorTests("Detached Element", detached);
+  runSpecialSelectorTests("Fragment", fragment);
+  runSpecialSelectorTests("In-document Element", element);
+
+  verifyStaticList("Document", doc, doc);
+  verifyStaticList("Detached Element", doc, detached);
+  verifyStaticList("Fragment", doc, fragment);
+  verifyStaticList("In-document Element", doc, element);
+
+  runInvalidSelectorTest("Document", doc, invalidSelectors);
+  runInvalidSelectorTest("Detached Element", detached, invalidSelectors);
+  runInvalidSelectorTest("Fragment", fragment, invalidSelectors);
+  runInvalidSelectorTest("In-document Element", element, invalidSelectors);
+
+  runValidSelectorTest("Document", doc, validSelectors, testType, docType);
+  runValidSelectorTest("Detached Element", detached, validSelectors, testType, docType);
+  runValidSelectorTest("Fragment", fragment, validSelectors, testType, docType);
+
+  doc.body.appendChild(outOfScope); // Append before in-document Element tests.
+                                    // None of these elements should match
+  runValidSelectorTest("In-document Element", element, validSelectors, testType, docType);
+}
+]]></script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All.html b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All.html
new file mode 100644
index 000000000..159b0b967
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All.html
@@ -0,0 +1,110 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>Selectors-API Test Suite: HTML</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="selectors.js"></script>
+<script src="ParentNode-querySelector-All.js"></script>
+<style>iframe { visibility: hidden; position: absolute; }</style>
+
+<div id="log">This test requires JavaScript.</div>
+
+<script>
+async_test(function() {
+  var frame = document.createElement("iframe");
+  frame.onload = this.step_func_done(init);
+  frame.src = "ParentNode-querySelector-All-content.html#target";
+  document.body.appendChild(frame);
+});
+
+function init(e) {
+  /*
+   * This test suite tests Selectors API methods in 4 different contexts:
+   * 1. Document node
+   * 2. In-document Element node
+   * 3. Detached Element node (an element with no parent, not in the document)
+   * 4. Document Fragment node
+   *
+   * For each context, the following tests are run:
+   *
+   * The interface check tests ensure that each type of node exposes the Selectors API methods
+   *
+   * The special selector tests verify the result of passing special values for the selector parameter,
+   * to ensure that the correct WebIDL processing is performed, such as stringification of null and
+   * undefined and missing parameter. The universal selector is also tested here, rather than with the
+   * rest of ordinary selectors for practical reasons.
+   *
+   * The static list verification tests ensure that the node lists returned by the method remain unchanged
+   * due to subsequent document modication, and that a new list is generated each time the method is
+   * invoked based on the current state of the document.
+   *
+   * The invalid selector tests ensure that SyntaxError is thrown for invalid forms of selectors
+   *
+   * The valid selector tests check the result from querying many different types of selectors, with a
+   * list of expected elements. This checks that querySelector() always returns the first result from
+   * querySelectorAll(), and that all matching elements are correctly returned in tree-order. The tests
+   * can be limited by specifying the test types to run, using the testType variable. The constants for this
+   * can be found in selectors.js.
+   *
+   * All the selectors tested for both the valid and invalid selector tests are found in selectors.js.
+   * See comments in that file for documentation of the format used.
+   *
+   * The ParentNode-querySelector-All.js file contains all the common test functions for running each of the aforementioned tests
+   */
+
+  var testType = TEST_QSA;
+  var docType  = "html"; // Only run tests suitable for HTML
+
+  // Prepare the nodes for testing
+  var doc = e.target.contentDocument;                 // Document Node tests
+
+  var element = doc.getElementById("root");   // In-document Element Node tests
+
+  //Setup the namespace tests
+  setupSpecialElements(doc, element);
+
+  var outOfScope = element.cloneNode(true);   // Append this to the body before running the in-document
+                                               // Element tests, but after running the Document tests. This
+                                               // tests that no elements that are not descendants of element
+                                               // are selected.
+
+  traverse(outOfScope, function(elem) {        // Annotate each element as being a clone; used for verifying
+    elem.setAttribute("data-clone", "");     // that none of these elements ever match.
+  });
+
+
+  var detached = element.cloneNode(true);     // Detached Element Node tests
+
+  var fragment = doc.createDocumentFragment(); // Fragment Node tests
+  fragment.appendChild(element.cloneNode(true));
+
+  // Setup Tests
+  interfaceCheck("Document", doc);
+  interfaceCheck("Detached Element", detached);
+  interfaceCheck("Fragment", fragment);
+  interfaceCheck("In-document Element", element);
+
+  runSpecialSelectorTests("Document", doc);
+  runSpecialSelectorTests("Detached Element", detached);
+  runSpecialSelectorTests("Fragment", fragment);
+  runSpecialSelectorTests("In-document Element", element);
+
+  verifyStaticList("Document", doc, doc);
+  verifyStaticList("Detached Element", doc, detached);
+  verifyStaticList("Fragment", doc, fragment);
+  verifyStaticList("In-document Element", doc, element);
+
+  runInvalidSelectorTest("Document", doc, invalidSelectors);
+  runInvalidSelectorTest("Detached Element", detached, invalidSelectors);
+  runInvalidSelectorTest("Fragment", fragment, invalidSelectors);
+  runInvalidSelectorTest("In-document Element", element, invalidSelectors);
+
+  runValidSelectorTest("Document", doc, validSelectors, testType, docType);
+  runValidSelectorTest("Detached Element", detached, validSelectors, testType, docType);
+  runValidSelectorTest("Fragment", fragment, validSelectors, testType, docType);
+
+  doc.body.appendChild(outOfScope); // Append before in-document Element tests.
+                                    // None of these elements should match
+  runValidSelectorTest("In-document Element", element, validSelectors, testType, docType);
+}
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All.js b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All.js
new file mode 100644
index 000000000..4e6bef6d5
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ParentNode-querySelector-All.js
@@ -0,0 +1,252 @@
+// Require selectors.js to be included before this.
+
+/*
+ * Create and append special elements that cannot be created correctly with HTML markup alone.
+ */
+function setupSpecialElements(doc, parent) {
+  // Setup null and undefined tests
+  parent.appendChild(doc.createElement("null"));
+  parent.appendChild(doc.createElement("undefined"));
+
+  // Setup namespace tests
+  var anyNS = doc.createElement("div");
+  var noNS = doc.createElement("div");
+  anyNS.id = "any-namespace";
+  noNS.id = "no-namespace";
+
+  var divs;
+  div = [doc.createElement("div"),
+         doc.createElementNS("http://www.w3.org/1999/xhtml", "div"),
+         doc.createElementNS("", "div"),
+         doc.createElementNS("http://www.example.org/ns", "div")];
+
+  div[0].id = "any-namespace-div1";
+  div[1].id = "any-namespace-div2";
+  div[2].setAttribute("id", "any-namespace-div3"); // Non-HTML elements can't use .id property
+  div[3].setAttribute("id", "any-namespace-div4");
+
+  for (var i = 0; i < div.length; i++) {
+    anyNS.appendChild(div[i])
+  }
+
+  div = [doc.createElement("div"),
+         doc.createElementNS("http://www.w3.org/1999/xhtml", "div"),
+         doc.createElementNS("", "div"),
+         doc.createElementNS("http://www.example.org/ns", "div")];
+
+  div[0].id = "no-namespace-div1";
+  div[1].id = "no-namespace-div2";
+  div[2].setAttribute("id", "no-namespace-div3"); // Non-HTML elements can't use .id property
+  div[3].setAttribute("id", "no-namespace-div4");
+
+  for (i = 0; i < div.length; i++) {
+    noNS.appendChild(div[i])
+  }
+
+  parent.appendChild(anyNS);
+  parent.appendChild(noNS);
+}
+
+/*
+ * Check that the querySelector and querySelectorAll methods exist on the given Node
+ */
+function interfaceCheck(type, obj) {
+  test(function() {
+    var q = typeof obj.querySelector === "function";
+    assert_true(q, type + " supports querySelector.");
+  }, type + " supports querySelector")
+
+  test(function() {
+    var qa = typeof obj.querySelectorAll === "function";
+    assert_true( qa, type + " supports querySelectorAll.");
+  }, type + " supports querySelectorAll")
+
+  test(function() {
+    var list = obj.querySelectorAll("div");
+    if (obj.ownerDocument) { // The object is not a Document
+      assert_true(list instanceof obj.ownerDocument.defaultView.NodeList, "The result should be an instance of a NodeList")
+    } else { // The object is a Document
+      assert_true(list instanceof obj.defaultView.NodeList, "The result should be an instance of a NodeList")
+    }
+  }, type + ".querySelectorAll returns NodeList instance")
+}
+
+/*
+ * Verify that the NodeList returned by querySelectorAll is static and and that a new list is created after
+ * each call. A static list should not be affected by subsequent changes to the DOM.
+ */
+function verifyStaticList(type, doc, root) {
+  var pre, post, preLength;
+
+  test(function() {
+    pre = root.querySelectorAll("div");
+    preLength = pre.length;
+
+    var div = doc.createElement("div");
+    (root.body || root).appendChild(div);
+
+    assert_equals(pre.length, preLength, "The length of the NodeList should not change.")
+  }, type + ": static NodeList")
+
+  test(function() {
+    post = root.querySelectorAll("div"),
+    assert_equals(post.length, preLength + 1, "The length of the new NodeList should be 1 more than the previous list.")
+  }, type + ": new NodeList")
+}
+
+/*
+ * Verify handling of special values for the selector parameter, including stringification of
+ * null and undefined, and the handling of the empty string.
+ */
+function runSpecialSelectorTests(type, root) {
+  test(function() { // 1
+    assert_equals(root.querySelectorAll(null).length, 1, "This should find one element with the tag name 'NULL'.");
+  }, type + ".querySelectorAll null")
+
+  test(function() { // 2
+    assert_equals(root.querySelectorAll(undefined).length, 1, "This should find one element with the tag name 'UNDEFINED'.");
+  }, type + ".querySelectorAll undefined")
+
+  test(function() { // 3
+    assert_throws(TypeError(), function() {
+      root.querySelectorAll();
+    }, "This should throw a TypeError.")
+  }, type + ".querySelectorAll no parameter")
+
+  test(function() { // 4
+    var elm = root.querySelector(null)
+    assert_not_equals(elm, null, "This should find an element.");
+    assert_equals(elm.tagName.toUpperCase(), "NULL", "The tag name should be 'NULL'.")
+  }, type + ".querySelector null")
+
+  test(function() { // 5
+    var elm = root.querySelector(undefined)
+    assert_not_equals(elm, undefined, "This should find an element.");
+    assert_equals(elm.tagName.toUpperCase(), "UNDEFINED", "The tag name should be 'UNDEFINED'.")
+  }, type + ".querySelector undefined")
+
+  test(function() { // 6
+    assert_throws(TypeError(), function() {
+      root.querySelector();
+    }, "This should throw a TypeError.")
+  }, type + ".querySelector no parameter")
+
+  test(function() { // 7
+    result = root.querySelectorAll("*");
+    var i = 0;
+    traverse(root, function(elem) {
+      if (elem !== root) {
+        assert_equals(elem, result[i], "The result in index " + i + " should be in tree order.");
+        i++;
+      }
+    })
+  }, type + ".querySelectorAll tree order");
+}
+
+/*
+ * Execute queries with the specified valid selectors for both querySelector() and querySelectorAll()
+ * Only run these tests when results are expected. Don't run for syntax error tests.
+ */
+function runValidSelectorTest(type, root, selectors, testType, docType) {
+  var nodeType = "";
+  switch (root.nodeType) {
+    case Node.DOCUMENT_NODE:
+      nodeType = "document";
+      break;
+    case Node.ELEMENT_NODE:
+      nodeType = root.parentNode ? "element" : "detached";
+      break;
+    case Node.DOCUMENT_FRAGMENT_NODE:
+      nodeType = "fragment";
+      break;
+    default:
+      assert_unreached();
+      nodeType = "unknown"; // This should never happen.
+  }
+
+  for (var i = 0; i < selectors.length; i++) {
+    var s = selectors[i];
+    var n = s["name"];
+    var q = s["selector"];
+    var e = s["expect"];
+
+    if ((!s["exclude"] || (s["exclude"].indexOf(nodeType) === -1 && s["exclude"].indexOf(docType) === -1))
+     && (s["testType"] & testType) ) {
+      var foundall, found;
+
+      test(function() {
+        foundall = root.querySelectorAll(q);
+        assert_not_equals(foundall, null, "The method should not return null.")
+        assert_equals(foundall.length, e.length, "The method should return the expected number of matches.")
+
+        for (var i = 0; i < e.length; i++) {
+          assert_not_equals(foundall[i], null, "The item in index " + i + " should not be null.")
+          assert_equals(foundall[i].getAttribute("id"), e[i], "The item in index " + i + " should have the expected ID.");
+          assert_false(foundall[i].hasAttribute("data-clone"), "This should not be a cloned element.");
+        }
+      }, type + ".querySelectorAll: " + n + ": " + q);
+
+      test(function() {
+        found = root.querySelector(q);
+
+        if (e.length > 0) {
+          assert_not_equals(found, null, "The method should return a match.")
+          assert_equals(found.getAttribute("id"), e[0], "The method should return the first match.");
+          assert_equals(found, foundall[0], "The result should match the first item from querySelectorAll.");
+          assert_false(found.hasAttribute("data-clone"), "This should not be annotated as a cloned element.");
+        } else {
+          assert_equals(found, null, "The method should not match anything.");
+        }
+      }, type + ".querySelector: " + n + ": " + q);
+    }
+  }
+}
+
+/*
+ * Execute queries with the specified invalid selectors for both querySelector() and querySelectorAll()
+ * Only run these tests when errors are expected. Don't run for valid selector tests.
+ */
+function runInvalidSelectorTest(type, root, selectors) {
+  for (var i = 0; i < selectors.length; i++) {
+    var s = selectors[i];
+    var n = s["name"];
+    var q = s["selector"];
+
+    test(function() {
+      assert_throws("SyntaxError", function() {
+        root.querySelector(q)
+      })
+    }, type + ".querySelector: " + n + ": " + q);
+
+    test(function() {
+      assert_throws("SyntaxError", function() {
+        root.querySelectorAll(q)
+      })
+    }, type + ".querySelectorAll: " + n + ": " + q);
+  }
+}
+
+function traverse(elem, fn) {
+  if (elem.nodeType === elem.ELEMENT_NODE) {
+    fn(elem);
+  }
+  elem = elem.firstChild;
+  while (elem) {
+    traverse(elem, fn);
+    elem = elem.nextSibling;
+  }
+}
+
+function getNodeType(node) {
+  switch (node.nodeType) {
+    case Node.DOCUMENT_NODE:
+      return "document";
+    case Node.ELEMENT_NODE:
+      return node.parentNode ? "element" : "detached";
+    case Node.DOCUMENT_FRAGMENT_NODE:
+      return "fragment";
+    default:
+      assert_unreached();
+      return "unknown"; // This should never happen.
+  }
+}
diff --git a/testing/web-platform/tests/dom/nodes/ProcessingInstruction-escapes-1.xhtml b/testing/web-platform/tests/dom/nodes/ProcessingInstruction-escapes-1.xhtml
new file mode 100644
index 000000000..d629a8464
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ProcessingInstruction-escapes-1.xhtml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet href="support/style.css" type="text/css"?>
+<?xml-stylesheet href="data:text/css,&#x41;&amp;&apos;" type="text/css"?>
+<?xml-stylesheet href="data:text/css,&#65;&amp;&apos;" type="text/css"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>ProcessingInstruction numeric escapes</title>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-processinginstruction-target"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-characterdata-data"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"/>
+<script>
+<![CDATA[
+test(function() {
+  var pienc = document.firstChild.nextSibling;
+  assert_true(pienc instanceof ProcessingInstruction)
+  assert_equals(pienc.target, "xml-stylesheet")
+  assert_equals(pienc.data, 'href="data:text/css,&#x41;&amp;&apos;" type="text/css"')
+  assert_equals(pienc.sheet.href, "data:text/css,A&'");
+
+  pienc = pienc.nextSibling;
+  assert_true(pienc instanceof ProcessingInstruction)
+  assert_equals(pienc.target, "xml-stylesheet")
+  assert_equals(pienc.data, 'href="data:text/css,&#65;&amp;&apos;" type="text/css"')
+  assert_equals(pienc.sheet.href, "data:text/css,A&'");
+})
+]]>
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/ProcessingInstruction-literal-1.xhtml b/testing/web-platform/tests/dom/nodes/ProcessingInstruction-literal-1.xhtml
new file mode 100644
index 000000000..4eaf86cbd
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ProcessingInstruction-literal-1.xhtml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>&lt;?xml?> is not a ProcessingInstruction</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"/>
+<script>
+test(function() {
+  assert_equals(document.firstChild, document.documentElement)
+})
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/ProcessingInstruction-literal-2.xhtml b/testing/web-platform/tests/dom/nodes/ProcessingInstruction-literal-2.xhtml
new file mode 100644
index 000000000..d878c697c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/ProcessingInstruction-literal-2.xhtml
@@ -0,0 +1,21 @@
+<?xml-stylesheet href="support/style.css" type="text/css"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>ProcessingInstruction literals</title>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-processinginstruction-target"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-characterdata-data"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"/>
+<script>
+test(function() {
+  var pienc = document.firstChild;
+  assert_true(pienc instanceof ProcessingInstruction)
+  assert_equals(pienc.target, "xml-stylesheet")
+  assert_equals(pienc.data, 'href="support/style.css" type="text/css"')
+})
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/Text-constructor.html b/testing/web-platform/tests/dom/nodes/Text-constructor.html
new file mode 100644
index 000000000..dbd9a0be0
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Text-constructor.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Text constructor</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-text">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Comment-Text-constructor.js"></script>
+<div id="log"></div>
+<script>
+test_constructor("Text");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/Text-splitText.html b/testing/web-platform/tests/dom/nodes/Text-splitText.html
new file mode 100644
index 000000000..aec1cee52
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Text-splitText.html
@@ -0,0 +1,53 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Text.splitText()</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-text-splittextoffset">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var text = document.createTextNode("camembert");
+  assert_throws("INDEX_SIZE_ERR", function () { text.splitText(10) });
+}, "Split text after end of data");
+
+test(function() {
+  var text = document.createTextNode("");
+  var new_text = text.splitText(0);
+  assert_equals(text.data, "");
+  assert_equals(new_text.data, "");
+}, "Split empty text");
+
+test(function() {
+  var text = document.createTextNode("comté");
+  var new_text = text.splitText(0);
+  assert_equals(text.data, "");
+  assert_equals(new_text.data, "comté");
+}, "Split text at beginning");
+
+test(function() {
+  var text = document.createTextNode("comté");
+  var new_text = text.splitText(5);
+  assert_equals(text.data, "comté");
+  assert_equals(new_text.data, "");
+}, "Split text at end");
+
+test(function() {
+  var text = document.createTextNode("comté");
+  var new_text = text.splitText(3);
+  assert_equals(text.data, "com");
+  assert_equals(new_text.data, "té");
+  assert_equals(new_text.parentNode, null);
+}, "Split root");
+
+test(function() {
+  var parent = document.createElement('div');
+  var text = document.createTextNode("bleu");
+  parent.appendChild(text);
+  var new_text = text.splitText(2);
+  assert_equals(text.data, "bl");
+  assert_equals(new_text.data, "eu");
+  assert_equals(text.nextSibling, new_text);
+  assert_equals(new_text.parentNode, parent);
+}, "Split child");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/append-on-Document.html b/testing/web-platform/tests/dom/nodes/append-on-Document.html
new file mode 100644
index 000000000..8d9ce2e3f
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/append-on-Document.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>DocumentType.append</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-parentnode-append">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+
+function test_append_on_Document() {
+
+    var node = document.implementation.createDocument(null, null);
+    test(function() {
+        var parent = node.cloneNode();
+        parent.append();
+        assert_array_equals(parent.childNodes, []);
+    }, 'Document.append() without any argument, on a Document having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        parent.append(x);
+        assert_array_equals(parent.childNodes, [x]);
+    }, 'Document.append() with only one element as an argument, on a Document having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        parent.appendChild(x);
+        assert_throws('HierarchyRequestError', function() { parent.append(y); });
+        assert_array_equals(parent.childNodes, [x]);
+    }, 'Document.append() with only one element as an argument, on a Document having one child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        assert_throws('HierarchyRequestError', function() { parent.append('text'); });
+        assert_array_equals(parent.childNodes, []);
+    }, 'Document.append() with text as an argument, on a Document having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        assert_throws('HierarchyRequestError', function() { parent.append(x, y); });
+        assert_array_equals(parent.childNodes, []);
+    }, 'Document.append() with two elements as the argument, on a Document having no child.');
+
+}
+
+test_append_on_Document();
+
+</script>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/attributes.html b/testing/web-platform/tests/dom/nodes/attributes.html
new file mode 100644
index 000000000..8d983350d
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/attributes.html
@@ -0,0 +1,712 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Attributes tests</title>
+<link rel=help href="https://dom.spec.whatwg.org/#attr">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-setattribute">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-setattributens">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="attributes.js"></script>
+<script src="productions.js"></script>
+<div id="log"></div>
+<span id="test1"></span>
+<span class="&amp;&lt;&gt;foo"></span>
+<span id="test2">
+  <span ~=""></span>
+  <span ~></span>
+  <span></span>
+</span>
+<script>
+var XML = "http://www.w3.org/XML/1998/namespace"
+var XMLNS = "http://www.w3.org/2000/xmlns/"
+
+// setAttribute exhaustive tests
+// Step 1
+test(function() {
+  var el = document.createElement("foo")
+  for (var i = 0; i < invalid_names.length; i++) {
+    assert_throws("INVALID_CHARACTER_ERR", function() { el.setAttribute(invalid_names[i], "test") })
+  }
+}, "When qualifiedName does not match the Name production, an " +
+   "INVALID_CHARACTER_ERR exception is to be thrown. (setAttribute)")
+test(function() {
+  var el = document.getElementById("test2")
+  for (var i = 0; i < el.children.length; i++) {
+    assert_throws("INVALID_CHARACTER_ERR", function() {
+      el.children[i].setAttribute("~", "test")
+    })
+  }
+}, "When qualifiedName does not match the Name production, an " +
+   "INVALID_CHARACTER_ERR exception is to be thrown, even if the attribute " +
+   "is already present. (setAttribute)")
+
+// Step 2
+test(function() {
+  var el = document.createElement("div")
+  el.setAttribute("ALIGN", "left")
+  assert_equals(el.getAttributeNS("", "ALIGN"), null)
+  assert_equals(el.getAttributeNS("", "align"), "left")
+  assert_equals(el.getAttribute("align"), "left")
+}, "setAttribute should lowercase its name argument (upper case attribute)")
+test(function() {
+  var el = document.createElement("div")
+  el.setAttribute("CHEEseCaKe", "tasty")
+  assert_equals(el.getAttributeNS("", "CHEEseCaKe"), null)
+  assert_equals(el.getAttributeNS("", "cheesecake"), "tasty")
+  assert_equals(el.getAttribute("cheesecake"), "tasty")
+}, "setAttribute should lowercase its name argument (mixed case attribute)")
+
+// Step 3
+test(function() {
+  var el = document.createElement("foo")
+  var tests = ["xmlns", "xmlns:a", "xmlnsx", "xmlns0"]
+  for (var i = 0; i < tests.length; i++) {
+    el.setAttribute(tests[i], "success");
+  }
+}, "setAttribute should not throw even when qualifiedName starts with 'xmlns'")
+
+// Step 4
+test(function() {
+  var el = document.createElement("foo")
+  for (var i = 0; i < valid_names.length; i++) {
+    el.setAttribute(valid_names[i], "test")
+    assert_equals(el.getAttribute(valid_names[i]), "test")
+  }
+}, "Basic functionality should be intact.")
+
+// Step 5
+test(function() {
+  var el = document.createElement("foo")
+  el.setAttribute("a", "1")
+  el.setAttribute("b", "2")
+  el.setAttribute("a", "3")
+  el.setAttribute("c", "4")
+  attributes_are(el, [["a", "3"],
+                      ["b", "2"],
+                      ["c", "4"]])
+}, "setAttribute should not change the order of previously set attributes.")
+test(function() {
+  var el = document.createElement("baz")
+  el.setAttributeNS("ab", "attr", "fail")
+  el.setAttributeNS("kl", "attr", "pass")
+  el.setAttribute("attr", "pass")
+  attributes_are(el, [["attr", "pass", "ab"],
+                      ["attr", "pass", "kl"]])
+}, "setAttribute should set the first attribute with the given name")
+test(function() {
+  // Based on a test by David Flanagan.
+  var el = document.createElement("baz")
+  el.setAttributeNS("foo", "foo:bar", "1");
+  assert_equals(el.getAttribute("foo:bar"), "1")
+  attr_is(el.attributes[0], "1", "bar", "foo", "foo", "foo:bar")
+  el.setAttribute("foo:bar", "2");
+  assert_equals(el.getAttribute("foo:bar"), "2")
+  attr_is(el.attributes[0], "2", "bar", "foo", "foo", "foo:bar")
+}, "setAttribute should set the attribute with the given qualified name")
+
+// setAttributeNS exhaustive tests
+// Step 1
+test(function() {
+  var el = document.createElement("foo")
+  for (var i = 0, il = invalid_names.length; i < il; ++i) {
+    assert_throws("INVALID_CHARACTER_ERR",
+                  function() { el.setAttributeNS("a", invalid_names[i], "fail") })
+  }
+}, "When qualifiedName does not match the Name production, an " +
+   "INVALID_CHARACTER_ERR exception is to be thrown. (setAttributeNS)")
+
+test(function() {
+  var el = document.getElementById("test2")
+  for (var i = 0; i < el.children.length; i++) {
+    assert_throws("INVALID_CHARACTER_ERR", function() {
+      el.children[i].setAttributeNS(null, "~", "test")
+    })
+  }
+}, "When qualifiedName does not match the Name production, an " +
+   "INVALID_CHARACTER_ERR exception is to be thrown, even if the attribute " +
+   "is already present. (setAttributeNS)")
+
+// Step 2
+test(function() {
+  var el = document.createElement("foo")
+  for (var i = 0, il = invalid_qnames.length; i < il; ++i) {
+    assert_throws("NAMESPACE_ERR",
+                  function() { el.setAttributeNS("a", invalid_qnames[i], "fail") },
+                  "Expected exception for " + invalid_qnames[i] + ".")
+  }
+}, "When qualifiedName does not match the QName production, an " +
+   "NAMESPACE_ERR exception is to be thrown.")
+
+// Step 3
+test(function() {
+  var el = document.createElement("foo")
+  el.setAttributeNS(null, "aa", "bb")
+  el.setAttributeNS("", "xx", "bb")
+  attributes_are(el, [["aa", "bb"],
+                      ["xx", "bb"]])
+}, "null and the empty string should result in a null namespace.")
+
+// Step 4
+test(function() {
+  var el = document.createElement("foo")
+  assert_throws("NAMESPACE_ERR",
+                function() { el.setAttributeNS("", "aa:bb", "fail") })
+  assert_throws("NAMESPACE_ERR",
+                function() { el.setAttributeNS(null, "aa:bb", "fail") })
+}, "A namespace is required to use a prefix.")
+
+// Step 5
+test(function() {
+  var el = document.createElement("foo")
+  assert_throws("NAMESPACE_ERR",
+                function() { el.setAttributeNS("a", "xml:bb", "fail") })
+}, "The xml prefix should not be allowed for arbitrary namespaces")
+test(function() {
+  var el = document.createElement("foo")
+  el.setAttributeNS(XML, "a:bb", "pass")
+  assert_equals(el.attributes.length, 1)
+  attr_is(el.attributes[0], "pass", "bb", XML, "a", "a:bb")
+}, "XML-namespaced attributes don't need an xml prefix")
+
+// Step 6
+test(function() {
+  var el = document.createElement("foo")
+  assert_throws("NAMESPACE_ERR",
+                function() { el.setAttributeNS("a", "xmlns:bb", "fail") })
+}, "The xmlns prefix should not be allowed for arbitrary namespaces")
+test(function() {
+  var el = document.createElement("foo")
+  assert_throws("NAMESPACE_ERR",
+                function() { el.setAttributeNS("a", "xmlns", "fail") })
+}, "The xmlns qualified name should not be allowed for arbitrary namespaces")
+test(function() {
+  var el = document.createElement("foo")
+  el.setAttributeNS("ns", "a:xmlns", "pass")
+  assert_equals(el.attributes.length, 1)
+  attr_is(el.attributes[0], "pass", "xmlns", "ns", "a", "a:xmlns")
+}, "xmlns should be allowed as local name")
+
+// Step 7
+test(function() {
+  var el = document.createElement("foo")
+  assert_throws("NAMESPACE_ERR",
+                function() { el.setAttributeNS(XMLNS, "a:xmlns", "fail") })
+  assert_throws("NAMESPACE_ERR",
+                function() { el.setAttributeNS(XMLNS, "b:foo", "fail") })
+}, "The XMLNS namespace should require xmlns as prefix or qualified name")
+test(function() {
+  var el = document.createElement("foo")
+  el.setAttributeNS(XMLNS, "xmlns:a", "pass")
+  assert_equals(el.attributes.length, 1)
+  attr_is(el.attributes[0], "pass", "a", XMLNS, "xmlns", "xmlns:a")
+}, "xmlns should be allowed as prefix in the XMLNS namespace")
+test(function() {
+  var el = document.createElement("foo")
+  el.setAttributeNS(XMLNS, "xmlns", "pass")
+  assert_equals(el.attributes.length, 1)
+  attr_is(el.attributes[0], "pass", "xmlns", XMLNS, null, "xmlns")
+}, "xmlns should be allowed as qualified name in the XMLNS namespace")
+
+// Step 8-9
+test(function() {
+  var el = document.createElement("foo")
+  el.setAttributeNS("a", "foo:bar", "X")
+  assert_equals(el.attributes.length, 1)
+  attr_is(el.attributes[0], "X", "bar", "a", "foo", "foo:bar")
+
+  el.setAttributeNS("a", "quux:bar", "Y")
+  assert_equals(el.attributes.length, 1)
+  attr_is(el.attributes[0], "Y", "bar", "a", "foo", "foo:bar")
+  el.removeAttributeNS("a", "bar")
+}, "Setting the same attribute with another prefix should not change the prefix")
+
+// Miscellaneous tests
+test(function() {
+  var el = document.createElement("iframe")
+  el.setAttribute("src", "file:///home")
+  assert_equals(el.getAttribute("src"), "file:///home")
+}, "setAttribute should not throw even if a load is not allowed")
+test(function() {
+  var docFragment = document.createDocumentFragment()
+  var newOne = document.createElement("newElement")
+  newOne.setAttribute("newdomestic", "Yes")
+  docFragment.appendChild(newOne)
+  var domesticNode = docFragment.firstChild
+  var attr = domesticNode.attributes.item(0)
+  attr_is(attr, "Yes", "newdomestic", null, null, "newdomestic")
+}, "Attributes should work in document fragments.")
+test(function() {
+  var el = document.createElement("foo")
+  el.setAttribute("x", "y")
+  var attr = el.attributes[0]
+  attr.value = "Y&lt;"
+  attr_is(attr, "Y&lt;", "x", null, null, "x")
+  assert_equals(el.getAttribute("x"), "Y&lt;")
+}, "Attribute values should not be parsed.")
+test(function() {
+  var el = document.getElementsByTagName("span")[0]
+  attr_is(el.attributes[0], "test1", "id", null, null, "id")
+}, "Specified attributes should be accessible.")
+test(function() {
+  var el = document.getElementsByTagName("span")[1]
+  attr_is(el.attributes[0], "&<>foo", "class", null, null, "class")
+}, "Entities in attributes should have been expanded while parsing.")
+
+test(function() {
+  var el = document.createElement("div")
+  assert_equals(el.hasAttribute("bar"), false)
+  assert_equals(el.hasAttributeNS(null, "bar"), false)
+  assert_equals(el.hasAttributeNS("", "bar"), false)
+  assert_equals(el.getAttribute("bar"), null)
+  assert_equals(el.getAttributeNS(null, "bar"), null)
+  assert_equals(el.getAttributeNS("", "bar"), null)
+}, "Unset attributes return null")
+test(function() {
+  var el = document.createElement("div")
+  el.setAttributeNS("ab", "attr", "t1")
+  el.setAttributeNS("kl", "attr", "t2")
+  assert_equals(el.hasAttribute("attr"), true)
+  assert_equals(el.hasAttributeNS("ab", "attr"), true)
+  assert_equals(el.hasAttributeNS("kl", "attr"), true)
+  assert_equals(el.getAttribute("attr"), "t1")
+  assert_equals(el.getAttributeNS("ab", "attr"), "t1")
+  assert_equals(el.getAttributeNS("kl", "attr"), "t2")
+  assert_equals(el.getAttributeNS(null, "attr"), null)
+  assert_equals(el.getAttributeNS("", "attr"), null)
+}, "First set attribute is returned by getAttribute")
+test(function() {
+  var el = document.createElement("div")
+  el.setAttribute("style", "color:#fff;")
+  assert_equals(el.hasAttribute("style"), true)
+  assert_equals(el.hasAttributeNS(null, "style"), true)
+  assert_equals(el.hasAttributeNS("", "style"), true)
+  assert_equals(el.getAttribute("style"), "color:#fff;")
+  assert_equals(el.getAttributeNS(null, "style"), "color:#fff;")
+  assert_equals(el.getAttributeNS("", "style"), "color:#fff;")
+}, "Style attributes are not normalized")
+test(function() {
+  var el = document.createElement("div")
+  el.setAttributeNS("", "ALIGN", "left")
+  assert_equals(el.hasAttribute("ALIGN"), false)
+  assert_equals(el.hasAttribute("align"), false)
+  assert_equals(el.hasAttributeNS(null, "ALIGN"), true)
+  assert_equals(el.hasAttributeNS(null, "align"), false)
+  assert_equals(el.hasAttributeNS("", "ALIGN"), true)
+  assert_equals(el.hasAttributeNS("", "align"), false)
+  assert_equals(el.getAttribute("ALIGN"), null)
+  assert_equals(el.getAttribute("align"), null)
+  assert_equals(el.getAttributeNS(null, "ALIGN"), "left")
+  assert_equals(el.getAttributeNS("", "ALIGN"), "left")
+  assert_equals(el.getAttributeNS(null, "align"), null)
+  assert_equals(el.getAttributeNS("", "align"), null)
+  el.removeAttributeNS("", "ALIGN")
+}, "Only lowercase attributes are returned on HTML elements (upper case attribute)")
+test(function() {
+  var el = document.createElement("div")
+  el.setAttributeNS("", "CHEEseCaKe", "tasty")
+  assert_equals(el.hasAttribute("CHEESECAKE"), false)
+  assert_equals(el.hasAttribute("CHEEseCaKe"), false)
+  assert_equals(el.hasAttribute("cheesecake"), false)
+  assert_equals(el.hasAttributeNS("", "CHEESECAKE"), false)
+  assert_equals(el.hasAttributeNS("", "CHEEseCaKe"), true)
+  assert_equals(el.hasAttributeNS("", "cheesecake"), false)
+  assert_equals(el.hasAttributeNS(null, "CHEESECAKE"), false)
+  assert_equals(el.hasAttributeNS(null, "CHEEseCaKe"), true)
+  assert_equals(el.hasAttributeNS(null, "cheesecake"), false)
+  assert_equals(el.getAttribute("CHEESECAKE"), null)
+  assert_equals(el.getAttribute("CHEEseCaKe"), null)
+  assert_equals(el.getAttribute("cheesecake"), null)
+  assert_equals(el.getAttributeNS(null, "CHEESECAKE"), null)
+  assert_equals(el.getAttributeNS("", "CHEESECAKE"), null)
+  assert_equals(el.getAttributeNS(null, "CHEEseCaKe"), "tasty")
+  assert_equals(el.getAttributeNS("", "CHEEseCaKe"), "tasty")
+  assert_equals(el.getAttributeNS(null, "cheesecake"), null)
+  assert_equals(el.getAttributeNS("", "cheesecake"), null)
+  el.removeAttributeNS("", "CHEEseCaKe")
+}, "Only lowercase attributes are returned on HTML elements (mixed case attribute)")
+test(function() {
+  var el = document.createElement("div")
+  document.body.appendChild(el)
+  el.setAttributeNS("", "align", "left")
+  el.setAttributeNS("xx", "align", "right")
+  el.setAttributeNS("", "foo", "left")
+  el.setAttributeNS("xx", "foo", "right")
+  assert_equals(el.hasAttribute("align"), true)
+  assert_equals(el.hasAttribute("foo"), true)
+  assert_equals(el.hasAttributeNS("xx", "align"), true)
+  assert_equals(el.hasAttributeNS(null, "foo"), true)
+  assert_equals(el.getAttribute("align"), "left")
+  assert_equals(el.getAttribute("foo"), "left")
+  assert_equals(el.getAttributeNS("xx", "align"), "right")
+  assert_equals(el.getAttributeNS(null, "foo"), "left")
+  assert_equals(el.getAttributeNS("", "foo"), "left")
+  el.removeAttributeNS("", "align")
+  el.removeAttributeNS("xx", "align")
+  el.removeAttributeNS("", "foo")
+  el.removeAttributeNS("xx", "foo")
+  document.body.removeChild(el)
+}, "First set attribute is returned with mapped attribute set first")
+test(function() {
+  var el = document.createElement("div")
+  el.setAttributeNS("xx", "align", "right")
+  el.setAttributeNS("", "align", "left")
+  el.setAttributeNS("xx", "foo", "right")
+  el.setAttributeNS("", "foo", "left")
+  assert_equals(el.hasAttribute("align"), true)
+  assert_equals(el.hasAttribute("foo"), true)
+  assert_equals(el.hasAttributeNS("xx", "align"), true)
+  assert_equals(el.hasAttributeNS(null, "foo"), true)
+  assert_equals(el.getAttribute("align"), "right")
+  assert_equals(el.getAttribute("foo"), "right")
+  assert_equals(el.getAttributeNS("xx", "align"), "right")
+  assert_equals(el.getAttributeNS(null, "foo"), "left")
+  assert_equals(el.getAttributeNS("", "foo"), "left")
+  el.removeAttributeNS("", "align")
+  el.removeAttributeNS("xx", "align")
+  el.removeAttributeNS("", "foo")
+  el.removeAttributeNS("xx", "foo")
+}, "First set attribute is returned with mapped attribute set later")
+
+test(function() {
+  var el = document.createElementNS("http://www.example.com", "foo")
+  el.setAttribute("A", "test")
+  assert_equals(el.hasAttribute("A"), true, "hasAttribute()")
+  assert_equals(el.hasAttributeNS("", "A"), true, "el.hasAttributeNS(\"\")")
+  assert_equals(el.hasAttributeNS(null, "A"), true, "el.hasAttributeNS(null)")
+  assert_equals(el.hasAttributeNS(undefined, "A"), true, "el.hasAttributeNS(undefined)")
+  assert_equals(el.hasAttributeNS("foo", "A"), false, "el.hasAttributeNS(\"foo\")")
+
+  assert_equals(el.getAttribute("A"), "test", "getAttribute()")
+  assert_equals(el.getAttributeNS("", "A"), "test", "el.getAttributeNS(\"\")")
+  assert_equals(el.getAttributeNS(null, "A"), "test", "el.getAttributeNS(null)")
+  assert_equals(el.getAttributeNS(undefined, "A"), "test", "el.getAttributeNS(undefined)")
+  assert_equals(el.getAttributeNS("foo", "A"), null, "el.getAttributeNS(\"foo\")")
+}, "Non-HTML element with upper-case attribute")
+
+test(function() {
+  var el = document.createElement("div")
+  el.setAttribute("pre:fix", "value 1")
+  el.setAttribute("fix", "value 2")
+
+  var prefixed = el.attributes[0]
+  assert_equals(prefixed.localName, "pre:fix", "prefixed local name")
+  assert_equals(prefixed.namespaceURI, null, "prefixed namespace")
+
+  var unprefixed = el.attributes[1]
+  assert_equals(unprefixed.localName, "fix", "unprefixed local name")
+  assert_equals(unprefixed.namespaceURI, null, "unprefixed namespace")
+
+  el.removeAttributeNS(null, "pre:fix")
+  assert_equals(el.attributes[0], unprefixed)
+}, "Attribute with prefix in local name")
+
+test(function() {
+  var el = document.createElement("div")
+  el.setAttribute("foo", "bar")
+  var attr = el.attributes[0]
+  assert_equals(attr.ownerElement, el)
+  el.removeAttribute("foo")
+  assert_equals(attr.ownerElement, null)
+}, "Attribute loses its owner when removed")
+
+test(function() {
+  var el = document.createElement("div")
+  el.setAttribute("foo", "bar")
+  var attr = el.attributes[0]
+  var attrNode = el.getAttributeNode("foo");
+  var attrNodeNS = el.getAttributeNodeNS("", "foo");
+  assert_equals(attr, attrNode);
+  assert_equals(attr, attrNodeNS);
+  el.setAttributeNS("x", "foo2", "bar2");
+  var attr2 = el.attributes[1];
+  var attrNodeNS2 = el.getAttributeNodeNS("x", "foo2");
+  assert_equals(attr2, attrNodeNS2);
+}, "Basic functionality of getAttributeNode/getAttributeNodeNS")
+
+test(function() {
+  var el = document.createElement("div")
+  el.setAttribute("foo", "bar")
+  var attrNode = el.getAttributeNode("foo");
+  var attrNodeNS = el.getAttributeNodeNS("", "foo");
+  assert_equals(attrNode, attrNodeNS);
+  el.removeAttribute("foo");
+  var el2 = document.createElement("div");
+  el2.setAttributeNode(attrNode);
+  assert_equals(attrNode, el2.getAttributeNode("foo"));
+  assert_equals(attrNode, el2.attributes[0]);
+  assert_equals(attrNode.ownerElement, el2);
+  assert_equals(attrNode.value, "bar");
+
+   var el3 = document.createElement("div");
+   el2.removeAttribute("foo");
+   el3.setAttribute("foo", "baz");
+   el3.setAttributeNode(attrNode);
+   assert_equals(el3.getAttribute("foo"), "bar");
+}, "Basic functionality of setAttributeNode")
+
+test(function() {
+  var el = document.createElement("div")
+  el.setAttributeNS("x", "foo", "bar")
+  var attrNode = el.getAttributeNodeNS("x", "foo");
+  el.removeAttribute("foo");
+  var el2 = document.createElement("div");
+  el2.setAttributeNS("x", "foo", "baz");
+  el2.setAttributeNodeNS(attrNode);
+  assert_equals(el2.getAttributeNS("x", "foo"), "bar");
+}, "Basic functionality of setAttributeNodeNS")
+
+test(function() {
+  var el = document.createElement("div");
+  var other = document.createElement("div");
+  attr = document.createAttribute("foo");
+  assert_equals(el.setAttributeNode(attr), null);
+  assert_equals(attr.ownerElement, el);
+  assert_throws("INUSE_ATTRIBUTE_ERR",
+                  function() { other.setAttributeNode(attr) },
+                  "Attribute already associated with el")
+}, "If attr’s element is neither null nor element, throw an InUseAttributeError.");
+
+test(function() {
+  var el = document.createElement("div");
+  attr = document.createAttribute("foo");
+  assert_equals(el.setAttributeNode(attr), null);
+  el.setAttribute("bar", "qux");
+  assert_equals(el.setAttributeNode(attr), attr);
+  assert_equals(el.attributes[0], attr);
+}, "Replacing an attr by itself");
+
+test(function() {
+  var el = document.createElement("div")
+  el.setAttribute("foo", "bar")
+  var attrNode = el.getAttributeNode("foo");
+  el.removeAttributeNode(attrNode);
+  var el2 = document.createElement("div");
+  el2.setAttributeNode(attrNode);
+  assert_equals(el2.attributes[0], attrNode);
+  assert_equals(el.attributes.length, 0);
+}, "Basic functionality of removeAttributeNode")
+
+test(function() {
+  var el = document.createElement("div")
+  el.setAttribute("foo", "bar")
+  var attrNode = el.getAttributeNode("foo");
+  var el2 = document.createElement("div");
+  assert_throws("INUSE_ATTRIBUTE_ERR", function(){el2.setAttributeNode(attrNode)});
+}, "setAttributeNode on bound attribute should throw InUseAttributeError")
+
+// Have to use an async_test to see what a DOMAttrModified listener sees,
+// because otherwise the event dispatch code will swallow our exceptions.  And
+// we want to make sure this test always happens, even when no mutation events
+// run.
+var setAttributeNode_mutation_test = async_test("setAttributeNode, if it fires mutation events, should fire one with the new node when resetting an existing attribute");
+
+test(function(){
+  var el = document.createElement("div")
+  var attrNode1 = document.createAttribute("foo");
+  attrNode1.value = "bar";
+  el.setAttributeNode(attrNode1);
+  var attrNode2 = document.createAttribute("foo");
+  attrNode2.value = "baz";
+
+  el.addEventListener("DOMAttrModified", function(e) {
+    // If this never gets called, that's OK, I guess.  But if it gets called, it
+    // better represent a single modification with attrNode2 as the relatedNode.
+    // We have to do an inner test() call here, because otherwise the exceptions
+    // our asserts trigger will get swallowed by the event dispatch code.
+    setAttributeNode_mutation_test.step(function() {
+      assert_equals(e.attrName, "foo");
+      assert_equals(e.attrChange, MutationEvent.MODIFICATION);
+      assert_equals(e.prevValue, "bar");
+      assert_equals(e.newValue, "baz");
+      assert_equals(e.relatedNode, attrNode2);
+    });
+  });
+
+  var oldNode = el.setAttributeNode(attrNode2);
+  assert_equals(oldNode, attrNode1,
+                "Must return the old attr node from a setAttributeNode call");
+}, "setAttributeNode, if it fires mutation events, should fire one with the new node when resetting an existing attribute (outer shell)");
+setAttributeNode_mutation_test.done();
+
+test(function(){
+  var el = document.createElement("div")
+  el.setAttribute("a", "b");
+  el.setAttribute("c", "d");
+
+  assert_array_equals(Array.prototype.map.call(el.attributes, function(a) { return a.name }),
+                      ["a", "c"]);
+  assert_array_equals(Array.prototype.map.call(el.attributes, function(a) { return a.value }),
+                      ["b", "d"]);
+
+  var attrNode = document.createAttribute("a");
+  attrNode.value = "e";
+  el.setAttributeNode(attrNode);
+
+  assert_array_equals(Array.prototype.map.call(el.attributes, function(a) { return a.name }),
+                      ["a", "c"]);
+  assert_array_equals(Array.prototype.map.call(el.attributes, function(a) { return a.value }),
+                      ["e", "d"]);
+}, "setAttributeNode called with an Attr that has the same name as an existing one should not change attribute order");
+
+test(function() {
+  var el = document.createElement("div");
+  el.setAttribute("foo", "bar");
+  assert_equals(el.getAttributeNames().length, 1);
+  assert_equals(el.getAttributeNames()[0], el.attributes[0].name);
+  assert_equals(el.getAttributeNames()[0], "foo");
+
+  el.removeAttribute("foo");
+  assert_equals(el.getAttributeNames().length, 0);
+
+  el.setAttribute("foo", "bar");
+  el.setAttributeNS("", "FOO", "bar");
+  el.setAttributeNS("dummy1", "foo", "bar");
+  el.setAttributeNS("dummy2", "dummy:foo", "bar");
+  assert_equals(el.getAttributeNames().length, 4);
+  assert_equals(el.getAttributeNames()[0], "foo");
+  assert_equals(el.getAttributeNames()[1], "FOO");
+  assert_equals(el.getAttributeNames()[2], "foo");
+  assert_equals(el.getAttributeNames()[3], "dummy:foo");
+  assert_equals(el.getAttributeNames()[0], el.attributes[0].name);
+  assert_equals(el.getAttributeNames()[1], el.attributes[1].name);
+  assert_equals(el.getAttributeNames()[2], el.attributes[2].name);
+  assert_equals(el.getAttributeNames()[3], el.attributes[3].name);
+
+  el.removeAttributeNS("", "FOO");
+  assert_equals(el.getAttributeNames().length, 3);
+  assert_equals(el.getAttributeNames()[0], "foo");
+  assert_equals(el.getAttributeNames()[1], "foo");
+  assert_equals(el.getAttributeNames()[2], "dummy:foo");
+  assert_equals(el.getAttributeNames()[0], el.attributes[0].name);
+  assert_equals(el.getAttributeNames()[1], el.attributes[1].name);
+  assert_equals(el.getAttributeNames()[2], el.attributes[2].name);
+}, "getAttributeNames tests");
+
+function getEnumerableOwnProps1(obj) {
+  var arr = [];
+  for (var prop in obj) {
+    if (obj.hasOwnProperty(prop)) {
+      arr.push(prop);
+    }
+  }
+  return arr;
+}
+
+function getEnumerableOwnProps2(obj) {
+  return Object.getOwnPropertyNames(obj).filter(
+    function (name) { return Object.getOwnPropertyDescriptor(obj, name).enumerable; })
+}
+
+test(function() {
+  var el = document.createElement("div");
+  el.setAttribute("a", "");
+  el.setAttribute("b", "");
+  assert_array_equals(getEnumerableOwnProps1(el.attributes),
+                      ["0", "1"])
+  assert_array_equals(getEnumerableOwnProps2(el.attributes),
+                      ["0", "1"])
+  assert_array_equals(Object.getOwnPropertyNames(el.attributes),
+                      ["0", "1", "a", "b"])
+}, "Own property correctness with basic attributes");
+
+test(function() {
+  var el = document.createElement("div");
+  el.setAttributeNS("", "a", "");
+  el.setAttribute("b", "");
+  el.setAttributeNS("foo", "a", "");
+  assert_array_equals(getEnumerableOwnProps1(el.attributes),
+                      ["0", "1", "2"])
+  assert_array_equals(getEnumerableOwnProps2(el.attributes),
+                      ["0", "1", "2"])
+  assert_array_equals(Object.getOwnPropertyNames(el.attributes),
+                      ["0", "1", "2", "a", "b"])
+  for (var propName of Object.getOwnPropertyNames(el.attributes)) {
+    assert_true(el.attributes[propName] instanceof Attr,
+                "el.attributes has an Attr for property name " + propName);
+  }
+}, "Own property correctness with non-namespaced attribute before same-name namespaced one");
+
+test(function() {
+  var el = document.createElement("div");
+  el.setAttributeNS("foo", "a", "");
+  el.setAttribute("b", "");
+  el.setAttributeNS("", "a", "");
+  assert_array_equals(getEnumerableOwnProps1(el.attributes),
+                      ["0", "1", "2"])
+  assert_array_equals(getEnumerableOwnProps2(el.attributes),
+                      ["0", "1", "2"])
+  assert_array_equals(Object.getOwnPropertyNames(el.attributes),
+                      ["0", "1", "2", "a", "b"])
+  for (var propName of Object.getOwnPropertyNames(el.attributes)) {
+    assert_true(el.attributes[propName] instanceof Attr,
+                "el.attributes has an Attr for property name " + propName);
+  }
+}, "Own property correctness with namespaced attribute before same-name non-namespaced one");
+
+test(function() {
+  var el = document.createElement("div");
+  el.setAttributeNS("foo", "a:b", "");
+  el.setAttributeNS("foo", "c:d", "");
+  el.setAttributeNS("bar", "a:b", "");
+  assert_array_equals(getEnumerableOwnProps1(el.attributes),
+                      ["0", "1", "2"])
+  assert_array_equals(getEnumerableOwnProps2(el.attributes),
+                      ["0", "1", "2"])
+  assert_array_equals(Object.getOwnPropertyNames(el.attributes),
+                      ["0", "1", "2", "a:b", "c:d"])
+  for (var propName of Object.getOwnPropertyNames(el.attributes)) {
+    assert_true(el.attributes[propName] instanceof Attr,
+                "el.attributes has an Attr for property name " + propName);
+  }
+}, "Own property correctness with two namespaced attributes with the same name-with-prefix");
+
+test(function() {
+  var el = document.createElement("div");
+  el.setAttributeNS("foo", "A:B", "");
+  el.setAttributeNS("bar", "c:D", "");
+  el.setAttributeNS("baz", "e:F", "");
+  el.setAttributeNS("qux", "g:h", "");
+  el.setAttributeNS("", "I", "");
+  el.setAttributeNS("", "j", "");
+  assert_array_equals(Object.getOwnPropertyNames(el.attributes),
+                      ["0", "1", "2", "3", "4", "5", "g:h", "j"])
+  for (var propName of Object.getOwnPropertyNames(el.attributes)) {
+    assert_true(el.attributes[propName] instanceof Attr,
+                "el.attributes has an Attr for property name " + propName);
+  }
+}, "Own property names should only include all-lowercase qualified names for an HTML element in an HTML document");
+
+test(function() {
+  var el = document.createElementNS("", "div");
+  el.setAttributeNS("foo", "A:B", "");
+  el.setAttributeNS("bar", "c:D", "");
+  el.setAttributeNS("baz", "e:F", "");
+  el.setAttributeNS("qux", "g:h", "");
+  el.setAttributeNS("", "I", "");
+  el.setAttributeNS("", "j", "");
+  assert_array_equals(Object.getOwnPropertyNames(el.attributes),
+                      ["0", "1", "2", "3", "4", "5", "A:B", "c:D", "e:F", "g:h", "I", "j"])
+  for (var propName of Object.getOwnPropertyNames(el.attributes)) {
+    assert_true(el.attributes[propName] instanceof Attr,
+                "el.attributes has an Attr for property name " + propName);
+  }
+}, "Own property names should include all qualified names for a non-HTML element in an HTML document");
+
+test(function() {
+  var doc = document.implementation.createDocument(null, "");
+  assert_equals(doc.contentType, "application/xml");
+  var el = doc.createElementNS("http://www.w3.org/1999/xhtml", "div");
+  el.setAttributeNS("foo", "A:B", "");
+  el.setAttributeNS("bar", "c:D", "");
+  el.setAttributeNS("baz", "e:F", "");
+  el.setAttributeNS("qux", "g:h", "");
+  el.setAttributeNS("", "I", "");
+  el.setAttributeNS("", "j", "");
+  assert_array_equals(Object.getOwnPropertyNames(el.attributes),
+                      ["0", "1", "2", "3", "4", "5", "A:B", "c:D", "e:F", "g:h", "I", "j"])
+  for (var propName of Object.getOwnPropertyNames(el.attributes)) {
+    assert_true(el.attributes[propName] instanceof Attr,
+                "el.attributes has an Attr for property name " + propName);
+  }
+}, "Own property names should include all qualified names for an HTML element in a non-HTML document");
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/attributes.js b/testing/web-platform/tests/dom/nodes/attributes.js
new file mode 100644
index 000000000..ef32bf6a6
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/attributes.js
@@ -0,0 +1,18 @@
+function attr_is(attr, v, ln, ns, p, n) {
+  assert_equals(attr.value, v)
+  assert_equals(attr.nodeValue, v)
+  assert_equals(attr.textContent, v)
+  assert_equals(attr.localName, ln)
+  assert_equals(attr.namespaceURI, ns)
+  assert_equals(attr.prefix, p)
+  assert_equals(attr.name, n)
+  assert_equals(attr.nodeName, n);
+  assert_equals(attr.specified, true)
+}
+
+function attributes_are(el, l) {
+  for (var i = 0, il = l.length; i < il; i++) {
+    attr_is(el.attributes[i], l[i][1], l[i][0], (l[i].length < 3) ? null : l[i][2], null, l[i][0])
+    assert_equals(el.attributes[i].ownerElement, el)
+  }
+}
diff --git a/testing/web-platform/tests/dom/nodes/case.html b/testing/web-platform/tests/dom/nodes/case.html
new file mode 100644
index 000000000..c3c195141
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/case.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Tests for case-sensitivity in APIs</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createelement">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createelementns">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-getelementsbytagname">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-getelementsbytagnamens">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-setattribute">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-setattributens">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-hasattribute">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-hasattributens">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-getelementsbytagname">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-element-getelementsbytagnamens">
+<script>var is_html = true;</script>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="case.js"></script>
+<div id="log"></div>
diff --git a/testing/web-platform/tests/dom/nodes/case.js b/testing/web-platform/tests/dom/nodes/case.js
new file mode 100644
index 000000000..8c2da4a44
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/case.js
@@ -0,0 +1,186 @@
+/*
+ * document.createElement(NS)
+ *
+ * document.getElementsByTagName(NS)
+ *
+ * Element.setAttribute(NS)
+ *
+ * Element.getAttribute(NS)
+ * Element.hasAttribute(NS)
+ * Element.getElementsByTagName(NS)
+ */
+
+var tests = [];
+setup(function() {
+        var name_inputs = ["abc", "Abc", "ABC", "ä", "Ä"];
+        var namespaces = ["http://www.w3.org/1999/xhtml", "http://www.w3.org/2000/svg", "http://FOO"];
+        name_inputs.forEach(function(x) {
+                              tests.push(["createElement " + x, test_create_element, [x]]);
+                              tests.push(["setAttribute " +x, test_set_attribute, [x]]);
+                              tests.push(["getAttribute " +x, test_get_attribute, [x]]);
+                              tests.push(["getElementsByTagName a:" +x, test_get_elements_tag_name,
+                                          [outer_product(namespaces, ["a"], name_inputs),
+                                           x]]);
+                              tests.push(["getElementsByTagName " +x, test_get_elements_tag_name,
+                                          [outer_product(namespaces, [null], name_inputs),
+                                           x]]);
+                            });
+        outer_product(namespaces, name_inputs, name_inputs).forEach(function(x) {
+                                                                      tests.push(["createElementNS " + x, test_create_element_ns, x]);
+                                                                      tests.push(["setAttributeNS " + x, test_set_attribute_ns, x]);
+                                                                      tests.push(["getAttributeNS " + x, test_get_attribute_ns, x]);
+                                                                    });
+        outer_product([null].concat(namespaces), name_inputs).forEach(function(x) {
+                                                                        tests.push(["getElementsByTagNameNS " + x, test_get_elements_tag_name_ns,
+                                                                        outer_product(namespaces, name_inputs), x]);
+                                                                      });
+        name_inputs.forEach(function(x) {
+                              tests.push(["createElementNS " + x, test_create_element_ns, [null, null, x]]);
+                              tests.push(["setAttributeNS " + x, test_set_attribute_ns, [null, null, x]]);
+                              tests.push(["getAttributeNS " + x, test_get_attribute_ns, [null, null, x]]);
+                            });
+
+      });
+function outer_product() {
+  var rv = [];
+  function compute_outer_product() {
+    var args = Array.prototype.slice.call(arguments);
+    var index = args[0];
+    if (index < args.length) {
+      args[index].forEach(function(x) {
+                           compute_outer_product.apply(this, [index+1].concat(args.slice(1, index), x, args.slice(index+1)));
+                          });
+    } else {
+      rv.push(args.slice(1));
+    }
+  }
+  compute_outer_product.apply(this, [1].concat(Array.prototype.slice.call(arguments)));
+  return rv;
+}
+
+function expected_case(input) {
+  //is_html gets set by a global on the page loading the tests
+  if (is_html) {
+    return ascii_lowercase(input);
+  } else {
+    return input;
+  }
+}
+
+function ascii_lowercase(input) {
+  return input.replace(/[A-Z]/g, function(x) {
+                         return x.toLowerCase();
+                       });
+}
+
+function get_qualified_name(el) {
+  if (el.prefix) {
+    return el.prefix + ":" + el.localName;
+  }
+  return el.localName;
+}
+
+function test_create_element(name) {
+  var node = document.createElement(name);
+  assert_equals(node.localName, expected_case(name));
+}
+
+function test_create_element_ns(namespace, prefix, local_name) {
+  var qualified_name = prefix ? prefix + ":" + local_name : local_name;
+  var node = document.createElementNS(namespace, qualified_name);
+  assert_equals(node.prefix, prefix, "prefix");
+  assert_equals(node.localName, local_name, "localName");
+}
+
+function test_set_attribute(name) {
+  var node = document.createElement("div");
+  node.setAttribute(name, "test");
+  assert_equals(node.attributes[0].localName, expected_case(name));
+}
+
+function test_set_attribute_ns(namespace, prefix, local_name) {
+  var qualified_name = prefix ? prefix + ":" + local_name : local_name;
+  var node = document.createElement("div");
+  node.setAttributeNS(namespace, qualified_name, "test");
+  var attr = node.attributes[0];
+  assert_equals(attr.prefix, prefix, "prefix");
+  assert_equals(attr.localName, local_name, "localName");
+}
+
+function test_get_attribute(name) {
+  var node = document.createElement("div");
+  node.setAttribute(name, "test");
+  var expected_name = expected_case(name);
+  assert_equals(node.getAttribute(expected_name), "test");
+  if (expected_name != name) {
+    assert_equals(node.getAttribute(expected_name), "test");
+  } else if (name !== ascii_lowercase(name)) {
+    assert_equals(node.getAttribute(ascii_lowercase(name)), null);
+  }
+}
+
+function test_get_attribute_ns(namespace, prefix, local_name) {
+  var qualified_name = prefix ? prefix + ":" + local_name : local_name;
+  var node = document.createElement("div");
+  node.setAttributeNS(namespace, qualified_name, "test");
+  var expected_name = local_name;
+  assert_equals(node.getAttributeNS(namespace, expected_name), "test");
+  if (local_name !== ascii_lowercase(local_name)) {
+    assert_equals(node.getAttributeNS(namespace, ascii_lowercase(local_name)), null);
+  }
+}
+
+function test_get_elements_tag_name(elements_to_create, search_string) {
+  var container = document.createElement("div");
+  elements_to_create.forEach(function(x) {
+                               var qualified_name = x[1] ? x[1] + ":" + x[2] : x[2];
+                               var element = document.createElementNS(x[0], qualified_name);
+                               container.appendChild(element);
+                             });
+  var expected = Array.prototype.filter.call(container.childNodes,
+                                            function(node) {
+                                              if (is_html && node.namespaceURI === "http://www.w3.org/1999/xhtml") {
+                                                return get_qualified_name(node) === expected_case(search_string);
+                                              } else {
+                                                return get_qualified_name(node) === search_string;
+                                              }
+                                            });
+  document.documentElement.appendChild(container);
+  try {
+    assert_array_equals(document.getElementsByTagName(search_string), expected);
+  } finally {
+    document.documentElement.removeChild(container);
+  }
+}
+
+function test_get_elements_tag_name_ns(elements_to_create, search_input) {
+  var search_uri = search_input[0];
+  var search_name = search_input[1];
+  var container = document.createElement("div");
+  elements_to_create.forEach(function(x) {
+                               var qualified_name = x[1] ? x[1] + ":" + x[2] : x[2];
+                               var element = document.createElementNS(x[0], qualified_name);
+                               container.appendChild(element);
+                             });
+  var expected = Array.prototype.filter.call(container.childNodes,
+                                            function(node) {
+                                              return node.namespaceURI === search_uri;
+                                              return node.localName === search_name;
+                                            });
+  document.documentElement.appendChild(container);
+  try {
+    assert_array_equals(document.getElementsByTagNameNS(search_uri, search_name), expected);
+  } catch(e) {
+    throw e;
+  } finally {
+    document.documentElement.removeChild(container);
+  }
+}
+
+function test_func() {
+  var func = arguments[0];
+  var rest = arguments[1];
+  func.apply(this, rest);
+}
+
+generate_tests(test_func, tests);
diff --git a/testing/web-platform/tests/dom/nodes/creators.js b/testing/web-platform/tests/dom/nodes/creators.js
new file mode 100644
index 000000000..8b7415d13
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/creators.js
@@ -0,0 +1,5 @@
+var creators = {
+  "element": "createElement",
+  "text": "createTextNode",
+  "comment": "createComment"
+};
diff --git a/testing/web-platform/tests/dom/nodes/encoding.py b/testing/web-platform/tests/dom/nodes/encoding.py
new file mode 100644
index 000000000..5f889e8db
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/encoding.py
@@ -0,0 +1,5 @@
+from cgi import escape
+
+def main(request, response):
+    label = request.GET.first('label')
+    return """<!doctype html><meta charset="%s">""" % escape(label)
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-01.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-01.htm
new file mode 100644
index 000000000..457d6c400
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-01.htm
@@ -0,0 +1,13 @@
+<!doctype html>
+<html class="a">
+ <head>
+  <title>document.getElementsByClassName(): simple</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a">
+  <div id="log"></div>
+  <script> test(function() {assert_array_equals(document.getElementsByClassName("\ta\n"),
+                                                [document.documentElement, document.body])}) </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-02.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-02.htm
new file mode 100644
index 000000000..d5e513fa8
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-02.htm
@@ -0,0 +1,14 @@
+<!doctype html>
+<html class="a
+b">
+ <head>
+  <title>document.getElementsByClassName(): also simple</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a
+">
+  <div id="log"></div>
+  <script> test(function() {assert_array_equals(document.getElementsByClassName("a\n"), [document.documentElement, document.body])}) </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-03.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-03.htm
new file mode 100644
index 000000000..a9e2d3af1
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-03.htm
@@ -0,0 +1,18 @@
+<!doctype html>
+<html class="a">
+ <head>
+  <title>document.getElementsByClassName(): changing classes</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a">
+  <div id="log"></div>
+  <script>
+   test(function() {
+          var collection = document.getElementsByClassName("a")
+          document.body.className = "b"
+          assert_array_equals(collection, [document.documentElement])
+        })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-04.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-04.htm
new file mode 100644
index 000000000..0c62fed2c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-04.htm
@@ -0,0 +1,18 @@
+<!doctype html>
+<html class="a">
+ <head>
+  <title>document.getElementsByClassName(): changing classes</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a">
+  <div id="log"></div>
+  <script>
+   test(function() {
+          var collection = document.getElementsByClassName("a");
+          document.body.className += "\tb";
+          assert_array_equals(collection, [document.documentElement, document.body]);
+        })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-05.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-05.htm
new file mode 100644
index 000000000..98245f642
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-05.htm
@@ -0,0 +1,18 @@
+<!doctype html>
+<html class="a">
+ <head>
+  <title>document.getElementsByClassName(): changing classes</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a">
+  <div id="log"></div>
+  <script>
+   test(function() {
+          var collection = document.getElementsByClassName("a");
+          document.body.removeAttribute("class");
+          assert_array_equals(collection, [document.documentElement]);
+        })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-06.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-06.htm
new file mode 100644
index 000000000..4975a89e0
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-06.htm
@@ -0,0 +1,20 @@
+<!doctype html>
+<html>
+ <head>
+  <title>document.getElementsByClassName(): adding element with class</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a">
+  <div id="log"></div>
+  <script>
+   test(function() {
+          var collection = document.getElementsByClassName("a");
+          var ele = document.createElement("foo");
+          ele.setAttribute("class", "a");
+          document.body.appendChild(ele);
+          assert_array_equals(collection, [document.body, ele]);
+        })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-07.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-07.htm
new file mode 100644
index 000000000..b0102fb2e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-07.htm
@@ -0,0 +1,15 @@
+<!doctype html>
+<html>
+ <head>
+  <title>document.getElementsByClassName(): multiple classes</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a b">
+  <div id="log"></div>
+  <script> test(function() {
+                  assert_array_equals(document.getElementsByClassName("b\t\f\n\na\rb"), [document.body]);
+               })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-08.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-08.htm
new file mode 100644
index 000000000..a248af492
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-08.htm
@@ -0,0 +1,15 @@
+<!doctype html>
+<html>
+ <head>
+  <title>document.getElementsByClassName(): multiple classes</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a">
+  <div id="log"></div>
+  <script> test(function() {
+                  document.getElementsByClassName("a\fa"), [document.body]
+                })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-09.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-09.htm
new file mode 100644
index 000000000..9011f3068
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-09.htm
@@ -0,0 +1,15 @@
+<!doctype html>
+<html class="a A">
+ <head>
+  <title>document.getElementsByClassName(): case sensitive</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a a">
+  <div id="log"></div>
+  <script>test(function() {
+                 assert_array_equals(document.getElementsByClassName("A a"), [document.documentElement])
+               })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-10.xml b/testing/web-platform/tests/dom/nodes/getElementsByClassName-10.xml
new file mode 100644
index 000000000..b3e3122cb
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-10.xml
@@ -0,0 +1,19 @@
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:g="http://www.w3.org/2000/svg">
+ <head>
+  <title>document.getElementsByClassName(): compound</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id="log"/>
+  <div id="tests">
+    <x class="a"/>
+    <g:x class="a"/>
+  </div>
+  <script>test(function() {
+                 assert_array_equals(document.getElementsByClassName("a"),
+                                     document.getElementById("tests").children);
+               })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-11.xml b/testing/web-platform/tests/dom/nodes/getElementsByClassName-11.xml
new file mode 100644
index 000000000..8593fa7a0
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-11.xml
@@ -0,0 +1,24 @@
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:g="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml" xmlns:t="http://tc.labs.opera.com/#test">
+ <head>
+  <title>document.getElementsByClassName(): "tricky" compound</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+  <div id="log" />
+  <div id="tests">
+    <x class="a"/>
+    <g:x class="a"/>
+    <x t:class="a" h:class="a" g:class="a"/>
+    <g:x t:class="a" h:class="a" g:class="a"/>
+    <t:x class="a" t:class="a" h:class="a" g:class="a"/>
+  </div>
+  <script>
+   test(function() {
+          var collection = document.getElementsByClassName("a");
+          var test = document.getElementById("tests").children;
+          assert_array_equals(collection, [test[0], test[1], test[4]]);
+         })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-12.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-12.htm
new file mode 100644
index 000000000..3b7f328b4
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-12.htm
@@ -0,0 +1,15 @@
+<!doctype html>
+<html class="a">
+ <head>
+  <title>element.getElementsByClassName(): simple</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a">
+  <div id="log"></div>
+  <script>test(function() {
+                 assert_array_equals(document.body.getElementsByClassName("a"), [])
+               })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-13.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-13.htm
new file mode 100644
index 000000000..f3af106ae
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-13.htm
@@ -0,0 +1,19 @@
+<!doctype html>
+<html class="a">
+ <head>
+  <title>element.getElementsByClassName(): adding an element</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a">
+  <div id="log"></div>
+  <script>test(function() {
+                 var collection = document.body.getElementsByClassName("a");
+                 var ele = document.createElement("x-y-z");
+                 ele.className = "a";
+                 document.body.appendChild(ele);
+                 assert_array_equals(collection, [ele]);
+               })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-14.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-14.htm
new file mode 100644
index 000000000..77de16298
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-14.htm
@@ -0,0 +1,16 @@
+<!-- quirks mode -->
+<html class="a A">
+ <head>
+  <title>document.getElementsByClassName(): case-insensitive (quirks mode)</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a a">
+  <div id="log"></div>
+  <script>test(function() {
+             assert_array_equals(document.getElementsByClassName("A a"),
+                                 [document.documentElement, document.body]);
+          })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-15.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-15.htm
new file mode 100644
index 000000000..89614de30
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-15.htm
@@ -0,0 +1,18 @@
+<!doctype html>
+<html class="a
+b">
+ <head>
+  <title>document.getElementsByClassName(array): "a\n"</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a
+">
+  <div id="log"></div>
+  <script>test(function () {
+                 assert_array_equals(document.getElementsByClassName(["a\n"]),
+                                    [document.documentElement, document.body]);
+          })
+ </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-16.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-16.htm
new file mode 100644
index 000000000..3f987a7ae
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-16.htm
@@ -0,0 +1,16 @@
+<!doctype html>
+<html class="a
+b">
+ <head>
+  <title>document.getElementsByClassName(array): "b","a"</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="b,a">
+  <div id="log"></div>
+  <script>test(function() {
+                 assert_array_equals(document.getElementsByClassName(["b", "a"]), [document.body]);
+               })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-17.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-17.htm
new file mode 100644
index 000000000..ae5ebda6e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-17.htm
@@ -0,0 +1,15 @@
+<!doctype html>
+<html>
+ <head>
+  <title>document.getElementsByClassName(array): "b a"</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a b">
+  <div id="log"></div>
+  <script>test(function() {
+                 assert_array_equals(document.getElementsByClassName(["b a"]), [document.body]);
+          })
+ </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-18.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-18.htm
new file mode 100644
index 000000000..9f6cf75a5
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-18.htm
@@ -0,0 +1,17 @@
+<!doctype html>
+<html class="a,b">
+ <head>
+  <title>element.getElementsByClassName(array): "a", "b"</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body class="a,b x">
+  <div id="log"></div>
+  <p id="r" class="a,bx"></p>
+  <script class="xa,b">test(function() {
+                             assert_array_equals(document.documentElement.getElementsByClassName(["\fa","b\n"]),
+                                                 [document.body])
+                            })
+  </script>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-19.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-19.htm
new file mode 100644
index 000000000..da233c743
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-19.htm
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html><head>
+    <title>getElementsByClassName</title>
+    <meta content="get elements in document" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+       <div id="log"></div>
+        <div>
+            <div>
+                <a class="text link" href="#foo">test link #foo</a>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <table>
+            <caption class="text caption">text caption</caption>
+            <thead>
+                <tr>
+                    <td class="TEXT head">TEXT head</td>
+                </tr>
+            </thead>
+            <tbody>
+                <tr>
+                    <td class="td text1">td text1</td>
+                </tr>
+                <tr>
+                    <td class="td text">td text</td>
+                </tr>
+                <tr>
+                    <td class="td te xt">td te xt</td>
+                </tr>
+            </tbody>
+            <tfoot>
+                <tr>
+                    <td class="TEXT foot">TEXT foot</td>
+                </tr>
+            </tfoot>
+        </table>
+        <div class="xt te">xt te</div>
+
+        <script type="text/javascript">
+    test(function ()
+          {
+           var collection = document.getElementsByClassName("text");
+           assert_equals(collection.length, 4);
+           assert_equals(collection[0].parentNode.nodeName, "DIV");
+           assert_equals(collection[1].parentNode.nodeName, "DIV");
+           assert_equals(collection[2].parentNode.nodeName, "TABLE");
+           assert_equals(collection[3].parentNode.nodeName, "TR");
+          }, "get elements in document");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-20.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-20.htm
new file mode 100644
index 000000000..6429e37bb
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-20.htm
@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<html><head>
+        <title>getElementsByClassName</title>
+        <meta content="get elements in document then add element to collection" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+        <div id="log"></div>
+        <div>
+            <div>
+                <a class="text link" href="#foo">test link #foo</a>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <table>
+            <caption class="text caption">text caption</caption>
+            <thead>
+                <tr>
+                    <td class="TEXT head">TEXT head</td>
+                </tr>
+            </thead>
+            <tbody>
+                <tr>
+                    <td class="td text1">td text1</td>
+                </tr>
+                <tr>
+                    <td class="td text">td text</td>
+                </tr>
+                <tr>
+                    <td class="td te xt">td te xt</td>
+                </tr>
+            </tbody>
+            <tfoot>
+                <tr>
+                    <td class="TEXT foot">TEXT foot</td>
+                </tr>
+            </tfoot>
+        </table>
+        <div class="xt te">xt te</div>
+
+        <script type="text/javascript">
+            test(function()
+            {
+                var collection = document.getElementsByClassName("text");
+                assert_equals(collection.length, 4);
+                var newDiv = document.createElement("div");
+                newDiv.setAttribute("class", "text");
+                newDiv.innerHTML = "text newDiv";
+                document.getElementsByTagName("table")[0].tBodies[0].rows[0].cells[0].appendChild(newDiv);
+
+                assert_equals(collection.length, 5);
+                assert_equals(collection[0].parentNode.nodeName, "DIV");
+                assert_equals(collection[1].parentNode.nodeName, "DIV");
+                assert_equals(collection[2].parentNode.nodeName, "TABLE");
+                assert_equals(collection[3].parentNode.nodeName, "TD");
+                assert_equals(collection[4].parentNode.nodeName, "TR");
+            }, "get elements in document then add element to collection");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-21.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-21.htm
new file mode 100644
index 000000000..339ff2d3e
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-21.htm
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html><head>
+        <title>getElementsByClassName</title>
+        <meta content="delete element from collection" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+        <div id="log"></div>
+        <div>
+            <div>
+                <a class="text link" href="#foo">test link #foo</a>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <table>
+            <caption class="text caption">text caption</caption>
+            <thead>
+                <tr>
+                    <td class="TEXT head">TEXT head</td>
+                </tr>
+            </thead>
+            <tbody>
+                <tr>
+                    <td class="td text1">td text1</td>
+                </tr>
+                <tr>
+                    <td class="td text">td text</td>
+                </tr>
+                <tr>
+                    <td class="td te xt">td te xt</td>
+                </tr>
+            </tbody>
+            <tfoot>
+                <tr>
+                    <td class="TEXT foot">TEXT foot</td>
+                </tr>
+            </tfoot>
+        </table>
+        <div class="xt te">xt te</div>
+
+        <script type="text/javascript">
+            test(function()
+            {
+                var collection = document.getElementsByClassName("text1");
+                assert_equals(collection.length, 1)
+                document.getElementsByTagName("table")[0].deleteRow(1);
+                assert_equals(collection.length, 0);
+            }, "delete element from collection");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-22.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-22.htm
new file mode 100644
index 000000000..c20396700
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-22.htm
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<html><head>
+        <title>getElementsByClassName</title>
+        <meta content="move item in collection order" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+        <div id="log"></div>
+        <div>
+            <div>
+                <a class="text link" href="#foo">test link #foo</a>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <table>
+            <caption class="text caption">text caption</caption>
+            <thead>
+                <tr>
+                    <td class="TEXT head">TEXT head</td>
+                </tr>
+            </thead>
+            <tbody>
+                <tr>
+                    <td class="td text1">td text1</td>
+                </tr>
+                <tr>
+                    <td class="td text">td text</td>
+                </tr>
+                <tr>
+                    <td class="td te xt">td te xt</td>
+                </tr>
+            </tbody>
+            <tfoot>
+                <tr>
+                    <td class="TEXT foot">TEXT foot</td>
+                </tr>
+            </tfoot>
+        </table>
+        <div class="xt te">xt te</div>
+
+        <script type="text/javascript">
+            test(function()
+            {
+                var collection = document.getElementsByClassName("text");
+                assert_equals(collection.length, 4);
+                var boldText = document.getElementsByTagName("b")[0];
+                document.getElementsByTagName("table")[0].tBodies[0].rows[0].cells[0].appendChild(boldText);
+
+                assert_equals(collection.length, 4);
+                assert_equals(collection[0].parentNode.nodeName, "DIV");
+                assert_equals(collection[1].parentNode.nodeName, "TABLE");
+                assert_equals(collection[2].parentNode.nodeName, "TD");
+                assert_equals(collection[3].parentNode.nodeName, "TR");
+            }, "move item in collection order");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-23.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-23.htm
new file mode 100644
index 000000000..0af8a0995
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-23.htm
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html><head>
+        <title>getElementsByClassName</title>
+        <meta content="multiple defined classes" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+        <div id="log"></div>
+        <div>
+            <div>
+                <a class="text link" href="#foo">test link #foo</a>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <table>
+            <caption class="text caption">text caption</caption>
+            <thead>
+                <tr>
+                    <td class="TEXT head">TEXT head</td>
+                </tr>
+            </thead>
+            <tbody>
+                <tr>
+                    <td class="td text1">td text1</td>
+                </tr>
+                <tr>
+                    <td class="td text">td text</td>
+                </tr>
+                <tr>
+                    <td class="td te xt">td te xt</td>
+                </tr>
+            </tbody>
+            <tfoot>
+                <tr>
+                    <td class="TEXT foot">TEXT foot</td>
+                </tr>
+            </tfoot>
+        </table>
+        <div class="xt te">xt te</div>
+
+        <script type="text/javascript">
+            test(function()
+            {
+                var collection = document.getElementsByClassName("te xt");
+                assert_equals(collection.length, 2);
+                assert_equals(collection[0].parentNode.nodeName, "TR");
+                assert_equals(collection[1].parentNode.nodeName, "BODY");
+            }, "multiple defined classes");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-24.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-24.htm
new file mode 100644
index 000000000..838987ad0
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-24.htm
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html><head>
+        <meta charset='utf-8'>
+        <title>getElementsByClassName</title>
+        <meta content="handle unicode chars" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+        <div id="log"></div>
+        <div>
+            <div>
+                <a class="ΔЙあ叶葉 말 link" href="#foo">ΔЙあ叶葉 말 link</a>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <div class="ΔЙあ叶葉 קم">ΔЙあ叶葉 קم</div>
+
+        <script type="text/javascript">
+            test(function()
+            {
+                var collection = document.getElementsByClassName("ΔЙあ叶葉");
+                assert_equals(collection.length, 2);
+                assert_equals(collection[0].parentNode.nodeName, "DIV");
+                assert_equals(collection[1].parentNode.nodeName, "BODY");
+            }, "handle unicode chars");
+        </script>
+
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-25.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-25.htm
new file mode 100644
index 000000000..21f2a9ff7
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-25.htm
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<html><head>
+        <title>getElementsByClassName</title>
+        <meta content="verify spacing is handled correctly" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+        <div id="log"></div>
+         <div>
+            <div>
+                <a class="text link" href="#foo">test link #foo</a>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <table>
+            <caption class="text caption">text caption</caption>
+            <thead>
+                <tr>
+                    <td class="TEXT head">TEXT head</td>
+                </tr>
+            </thead>
+            <tbody>
+                <tr>
+                    <td class="td text1">td text1</td>
+                </tr>
+                <tr>
+                    <td class="td text">td text</td>
+                </tr>
+                <tr>
+                    <td class="td te xt">td te xt</td>
+                </tr>
+            </tbody>
+            <tfoot>
+                <tr>
+                    <td class="TEXT foot">TEXT foot</td>
+                </tr>
+            </tfoot>
+        </table>
+        <div class="xt te">xt te</div>
+
+        <script type="text/javascript">
+          test(function()
+          {
+            var collection = document.getElementsByClassName("text ");
+            assert_equals(collection.length, 4);
+            var boldText = document.getElementsByTagName("b")[0];
+            document.getElementsByTagName("table")[0].tBodies[0].rows[0].cells[0].appendChild(boldText);
+            assert_equals(collection.length, 4);
+            assert_equals(collection[0].parentNode.nodeName, "DIV");
+            assert_equals(collection[1].parentNode.nodeName, "TABLE");
+            assert_equals(collection[2].parentNode.nodeName, "TD");
+            assert_equals(collection[3].parentNode.nodeName, "TR");
+          }, "verify spacing is handled correctly");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-26.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-26.htm
new file mode 100644
index 000000000..0d7ff1ba1
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-26.htm
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html><head>
+        <title>getElementsByClassName</title>
+        <meta content="multiple class attributes" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+       <div id="log"></div>
+         <div class="te xt">
+            te xt
+            <div class="te">
+                te; xt
+                <a class="text link" href="#foo">test link #foo</a>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <div class="xt te">xt te</div>
+         <script type="text/javascript">
+            test(function()
+            {
+                var collection = document.getElementsByClassName("te xt");
+
+                assert_equals(collection.length, 2);
+                assert_equals(collection[0].parentNode.nodeName, "BODY");
+                assert_equals(collection[1].parentNode.nodeName, "BODY");
+            }, "multiple class attributes");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-27.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-27.htm
new file mode 100644
index 000000000..95fc67442
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-27.htm
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html><head>
+        <title>getElementsByClassName</title>
+        <meta content="generic element listed" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+      <div id="log"></div>
+         <div class="te xt">
+            te xt
+            <div class="te">
+                te; xt
+                <a class="text link" href="#foo">test link #foo</a>
+                <foo class="te xt">dummy tag</foo>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <div class="xt te">xt te</div>
+        <script type="text/javascript">
+            test(function()
+            {
+                var collection = document.getElementsByClassName("te xt");
+
+                assert_equals(collection.length, 3);
+                assert_equals(collection[0].parentNode.nodeName, "BODY");
+                assert_equals(collection[1].parentNode.nodeName, "DIV");
+                assert_equals(collection[2].parentNode.nodeName, "BODY");
+            }, "generic element listed");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-28.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-28.htm
new file mode 100644
index 000000000..1fc94d807
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-28.htm
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html><head>
+        <title>getElementsByClassName</title>
+        <meta content="generic element listed" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+        <div id="log"></div>
+        <div class="te xt">
+            te xt
+            <div class="te">
+                te; xt
+                <a class="text link" href="#foo">test link #foo</a>
+                <fooU00003Abar class="te xt namespace">te xt namespace
+            </fooU00003Abar></div>
+            <b class="text">text</b>
+        </div>
+        <div class="xt te">xt te</div>
+        <script type="text/javascript">
+            test(function()
+            {
+                var collection = document.getElementsByClassName("te xt");
+                assert_equals(collection.length, 3);
+                assert_equals(collection[0].parentNode.nodeName, "BODY");
+                assert_equals(collection[1].parentNode.nodeName, "DIV");
+                assert_equals(collection[2].parentNode.nodeName, "BODY");
+            }, "generic element listed");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-29.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-29.htm
new file mode 100644
index 000000000..ad489752c
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-29.htm
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html><head>
+    <title>getElementsByClassName</title>
+    <meta content="get class from children of element" name="description">
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+</head>
+    <body>
+        <div id='log'></div>
+        <div>
+            <div>
+                <a class="text link" href="#foo">test link #foo</a>
+            </div>
+            <b class="text">text</b>
+        </div>
+        <table>
+            <caption class="text caption">text caption</caption>
+            <thead>
+                <tr>
+                    <td class="TEXT head">TEXT head</td>
+                </tr>
+            </thead>
+            <tbody>
+                <tr>
+                    <td class="td text1">td text1</td>
+                </tr>
+                <tr>
+                    <td class="td text">td text</td>
+                </tr>
+                <tr>
+                    <td class="td te xt">td te xt</td>
+                </tr>
+            </tbody>
+            <tfoot>
+                <tr>
+                    <td class="TEXT foot">TEXT foot</td>
+                </tr>
+            </tfoot>
+        </table>
+        <div class="xt te">xt te</div>
+
+        <script type="text/javascript">
+            test(function()
+            {
+                var collection = document.getElementsByTagName("table")[0].getElementsByClassName("te xt");
+                assert_equals(collection.length, 1);
+                assert_equals(collection[0].parentNode.nodeName, "TR");
+            }, "get class from children of element");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-30.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-30.htm
new file mode 100644
index 000000000..c0b4faf2d
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-30.htm
@@ -0,0 +1,190 @@
+<!DOCTYPE html>
+<html><head class="foo">
+        <title class="foo">getElementsByClassName</title>
+        <meta class="foo" content="big element listing" name="description">
+        <link class="foo">
+        <base class="foo">
+        <script class="foo"></script>
+        <style class="foo"></style>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <link href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname" rel="help">
+</head>
+    <body class="foo">
+    <div id='log'></div>
+        <a class="foo">a</a>
+        <abbr class="foo">abbr</abbr>
+        <acronym class="foo">acronym</acronym>
+        <address class="foo">address</address>
+        <applet class="foo">applet</applet>
+        <b class="foo">b</b>
+        <bdo class="foo">bdo</bdo>
+        <big class="foo">big</big>
+        <blockquote class="foo">blockquote</blockquote>
+        <br class="foo">
+        <button class="foo">button</button>
+        <center class="foo">center</center>
+        <cite class="foo">cite</cite>
+        <code class="foo">code</code>
+        <del class="foo">del</del>
+        <dfn class="foo">dfn</dfn>
+        <dir class="foo">dir
+            <li class="foo">li</li>
+        </dir>
+        <div class="foo">div</div>
+        <dl class="foo">
+            <dt class="foo">
+                </dt><dd class="foo">dd</dd>
+        </dl>
+        <em class="foo">em</em>
+        <font class="foo">font</font>
+        <form class="foo">
+            <label class="foo">label</label>
+            <fieldset class="foo">
+                <legend class="foo">legend</legend>
+            </fieldset>
+        </form>
+        <h1 class="foo">h1</h1>
+        <hr class="foo">
+        <i class="foo">i</i>
+        <iframe class="foo">iframe</iframe>
+        <img class="foo">
+        <input class="foo">
+        <ins class="foo">ins</ins>
+        <kbd class="foo">kbd</kbd>
+        <map class="foo">
+            <area class="foo"></area>
+        </map>
+        <menu class="foo">menu</menu>
+        <noscript class="foo">noscript</noscript>
+        <object class="foo">
+            <param class="foo">
+        </object>
+        <ol class="foo">ol</ol>
+        <p class="foo">p</p>
+        <pre class="foo">pre</pre>
+        <q class="foo">q</q>
+        <s class="foo">s</s>
+        <samp class="foo">samp</samp>
+        <select class="foo">
+            <optgroup class="foo">optgroup</optgroup>
+            <option class="foo">option</option>
+        </select>
+        <small class="foo">small</small>
+        <span class="foo">span</span>
+        <strike class="foo">strike</strike>
+        <strong class="foo">strong</strong>
+        <sub class="foo">sub</sub>
+        <sup class="foo">sup</sup>
+        colgroup<table class="foo">
+            <caption class="foo">caption</caption>
+            <colgroup><col class="foo">
+            </colgroup><colgroup class="foo"></colgroup>
+            <thead class="foo">
+                <tr><th class="foo">th</th>
+            </tr></thead>
+            <tbody class="foo">
+                <tr class="foo">
+                    <td class="foo">td</td>
+                </tr>
+            </tbody>
+            <tfoot class="foo"></tfoot>
+        </table>
+        <textarea class="foo">textarea</textarea>
+        <tt class="foo">tt</tt>
+        <u class="foo">u</u>
+        <ul class="foo">ul</ul>
+        <var class="foo">var</var>
+        <script type="text/javascript">
+    test(function ()
+          {
+           var arrElements = [
+                "HEAD",
+                "TITLE",
+                "META",
+                "LINK",
+                "BASE",
+                "SCRIPT",
+                "STYLE",
+                "BODY",
+                "A",
+                "ABBR",
+                "ACRONYM",
+                "ADDRESS",
+                "APPLET",
+                "B",
+                "BDO",
+                "BIG",
+                "BLOCKQUOTE",
+                "BR",
+                "BUTTON",
+                "CENTER",
+                "CITE",
+                "CODE",
+                "DEL",
+                "DFN",
+                "DIR",
+                "LI",
+                "DIV",
+                "DL",
+                "DT",
+                "DD",
+                "EM",
+                "FONT",
+                "FORM",
+                "LABEL",
+                "FIELDSET",
+                "LEGEND",
+                "H1",
+                "HR",
+                "I",
+                "IFRAME",
+                "IMG",
+                "INPUT",
+                "INS",
+                "KBD",
+                "MAP",
+                "AREA",
+                "MENU",
+                "NOSCRIPT",
+                "OBJECT",
+                "PARAM",
+                "OL",
+                "P",
+                "PRE",
+                "Q",
+                "S",
+                "SAMP",
+                "SELECT",
+                "OPTGROUP",
+                "OPTION",
+                "SMALL",
+                "SPAN",
+                "STRIKE",
+                "STRONG",
+                "SUB",
+                "SUP",
+                "TABLE",
+                "CAPTION",
+                "COL",
+                "COLGROUP",
+                "THEAD",
+                "TH",
+                "TBODY",
+                "TR",
+                "TD",
+                "TFOOT",
+                "TEXTAREA",
+                "TT",
+                "U",
+                "UL",
+                "VAR"];
+
+                var collection = document.getElementsByClassName("foo");
+                for (var x = 0; x < collection.length; x++)
+                {
+                    assert_equals(collection[x].nodeName, arrElements[x]);
+                }
+}, "big element listing");
+        </script>
+</body></html>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassName-31.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassName-31.htm
new file mode 100644
index 000000000..0e1ac014a
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassName-31.htm
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html class=foo>
+<meta charset=utf-8>
+<title>getElementsByClassName across documents</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script class=foo>
+async_test(function() {
+  var iframe = document.createElement("iframe");
+  iframe.onload = this.step_func_done(function() {
+    var collection = iframe.contentDocument.getElementsByClassName("foo");
+    assert_equals(collection.length, 3);
+    assert_equals(collection[0].localName, "html");
+    assert_equals(collection[1].localName, "head");
+    assert_equals(collection[2].localName, "body");
+  });
+  iframe.src = "getElementsByClassNameFrame.htm";
+  document.body.appendChild(iframe);
+});
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/getElementsByClassNameFrame.htm b/testing/web-platform/tests/dom/nodes/getElementsByClassNameFrame.htm
new file mode 100644
index 000000000..544df60a9
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/getElementsByClassNameFrame.htm
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<html class=foo>
+<head class=foo>
+<meta charset=utf-8>
+<title>getElementsByClassName</title>
+<body class=foo>
diff --git a/testing/web-platform/tests/dom/nodes/insert-adjacent.html b/testing/web-platform/tests/dom/nodes/insert-adjacent.html
new file mode 100644
index 000000000..247b7d174
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/insert-adjacent.html
@@ -0,0 +1,79 @@
+<!doctype html>
+<meta charset="utf-8">
+<title></title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#element {
+  display: none;
+}
+</style>
+
+<div id="element"></div>
+<div id="log"></div>
+
+<script>
+var possiblePositions = {
+    'beforebegin': 'previousSibling'
+  , 'afterbegin': 'firstChild'
+  , 'beforeend': 'lastChild'
+  , 'afterend': 'nextSibling'
+}
+var texts = {
+   'beforebegin': 'raclette'
+  , 'afterbegin': 'tartiflette'
+  , 'beforeend': 'lasagne'
+  , 'afterend': 'gateau aux pommes'
+}
+
+var el = document.querySelector('#element');
+
+Object.keys(possiblePositions).forEach(function(position) {
+  var div = document.createElement('h3');
+  test(function() {
+    div.id = texts[position];
+    el.insertAdjacentElement(position, div);
+    assert_equals(el[possiblePositions[position]].id, texts[position]);
+  }, 'insertAdjacentElement(' + position + ', ' + div + ' )');
+
+  test(function() {
+    el.insertAdjacentText(position, texts[position]);
+    assert_equals(el[possiblePositions[position]].textContent, texts[position]);
+  }, 'insertAdjacentText(' + position + ', ' + texts[position] + ' )');
+});
+
+test(function() {
+  assert_throws(new TypeError(), function() {
+    el.insertAdjacentElement('afterbegin',
+    document.implementation.createDocumentType("html"))
+  })
+}, 'invalid object argument insertAdjacentElement')
+test(function() {
+  var el = document.implementation.createHTMLDocument().documentElement;
+  assert_throws("HIERARCHY_REQUEST_ERR", function() {
+    el.insertAdjacentElement('beforebegin', document.createElement('banane'))
+  })
+}, 'invalid caller object insertAdjacentElement')
+test(function() {
+  var el = document.implementation.createHTMLDocument().documentElement;
+  assert_throws("HIERARCHY_REQUEST_ERR", function() {
+    el.insertAdjacentText('beforebegin', 'tomate farcie')
+  })
+}, 'invalid caller object insertAdjacentText')
+test(function() {
+  var div = document.createElement('h3');
+  assert_throws("SYNTAX_ERR", function() {
+    el.insertAdjacentElement('heeeee', div)
+  })
+}, "invalid syntax for insertAdjacentElement")
+test(function() {
+  assert_throws("SYNTAX_ERR", function() {
+    el.insertAdjacentText('hoooo', 'magret de canard')
+  })
+}, "invalid syntax for insertAdjacentText")
+test(function() {
+  var div = document.createElement('div');
+  assert_equals(div.insertAdjacentElement("beforebegin", el), null);
+}, 'insertAdjacentText should return null');
+
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/mutationobservers.js b/testing/web-platform/tests/dom/nodes/mutationobservers.js
new file mode 100644
index 000000000..772f280be
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/mutationobservers.js
@@ -0,0 +1,76 @@
+// Compares a mutation record to a predefined one
+// mutationToCheck is a mutation record from the user agent
+// expectedRecord is a mutation record minted by the test
+//    for expectedRecord, if properties are ommitted, they get default ones
+function checkRecords(target, mutationToCheck, expectedRecord) {
+  var mr1;
+  var mr2;
+
+
+  function checkField(property, isArray) {
+    var field = mr2[property];
+    if (isArray === undefined) {
+      isArray = false;
+    }
+    if (field instanceof Function) {
+      field = field();
+    } else if (field === undefined) {
+      if (isArray) {
+        field = new Array();
+      } else {
+        field = null;
+      }
+    }
+    if (isArray) {
+      assert_array_equals(mr1[property], field, property + " didn't match");
+    } else {
+      assert_equals(mr1[property], field, property + " didn't match");
+    }
+  }
+
+  assert_equals(mutationToCheck.length, expectedRecord.length, "mutation records must match");
+  for (var item = 0; item < mutationToCheck.length; item++) {
+    mr1 = mutationToCheck[item];
+    mr2 = expectedRecord[item];
+
+    if (mr2.target instanceof Function) {
+      assert_equals(mr1.target, mr2.target(), "target node must match");
+    } else if (mr2.target !== undefined) {
+      assert_equals(mr1.target, mr2.target, "target node must match");
+    } else {
+      assert_equals(mr1.target, target, "target node must match");
+    }
+
+    checkField("type");
+    checkField("addedNodes", true);
+    checkField("removedNodes", true);
+    checkField("previousSibling");
+    checkField("nextSibling");
+    checkField("attributeName");
+    checkField("attributeNamespace");
+    checkField("oldValue");
+  };
+}
+
+function runMutationTest(node, mutationObserverOptions, mutationRecordSequence, mutationFunction, description, target) {
+  var test = async_test(description);
+
+
+  function moc(mrl, obs) {
+    test.step(
+      function () {
+            if (target === undefined) target = node;
+            checkRecords(target, mrl, mutationRecordSequence);
+        test.done();
+      }
+     );
+  }
+
+  test.step(
+    function () {
+      (new MutationObserver(moc)).observe(node, mutationObserverOptions);
+      mutationFunction();
+    }
+  );
+  return mutationRecordSequence.length
+}
diff --git a/testing/web-platform/tests/dom/nodes/prepend-on-Document.html b/testing/web-platform/tests/dom/nodes/prepend-on-Document.html
new file mode 100644
index 000000000..ccc56894d
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/prepend-on-Document.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>DocumentType.prepend</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-parentnode-prepend">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+
+function test_prepend_on_Document() {
+
+    var node = document.implementation.createDocument(null, null);
+    test(function() {
+        var parent = node.cloneNode();
+        parent.prepend();
+        assert_array_equals(parent.childNodes, []);
+    }, 'Document.prepend() without any argument, on a Document having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        parent.prepend(x);
+        assert_array_equals(parent.childNodes, [x]);
+    }, 'Document.prepend() with only one element as an argument, on a Document having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        parent.appendChild(x);
+        assert_throws('HierarchyRequestError', function() { parent.prepend(y); });
+        assert_array_equals(parent.childNodes, [x]);
+    }, 'Document.append() with only one element as an argument, on a Document having one child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        assert_throws('HierarchyRequestError', function() { parent.prepend('text'); });
+        assert_array_equals(parent.childNodes, []);
+    }, 'Document.prepend() with text as an argument, on a Document having no child.');
+
+    test(function() {
+        var parent = node.cloneNode();
+        var x = document.createElement('x');
+        var y = document.createElement('y');
+        assert_throws('HierarchyRequestError', function() { parent.prepend(x, y); });
+        assert_array_equals(parent.childNodes, []);
+    }, 'Document.prepend() with two elements as the argument, on a Document having no child.');
+
+}
+
+test_prepend_on_Document();
+
+</script>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/productions.js b/testing/web-platform/tests/dom/nodes/productions.js
new file mode 100644
index 000000000..2b9959041
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/productions.js
@@ -0,0 +1,3 @@
+var invalid_names = ["", "invalid^Name", "\\", "'", '"', "0", "0:a"] // XXX
+var valid_names = ["x", ":", "a:0"]
+var invalid_qnames = [":a", "b:", "x:y:z"] // XXX
diff --git a/testing/web-platform/tests/dom/nodes/remove-unscopable.html b/testing/web-platform/tests/dom/nodes/remove-unscopable.html
new file mode 100644
index 000000000..0238b0fa9
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/remove-unscopable.html
@@ -0,0 +1,32 @@
+<!doctype html>
+<meta charset=utf-8>
+<title></title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id="testDiv" onclick="result1 = remove; result2 = this.remove;"></div>
+<script>
+var result1;
+var result2;
+var unscopables = [
+    "before",
+    "after",
+    "replaceWith",
+    "remove",
+    "prepend",
+    "append"
+];
+for (var i in unscopables) {
+    var name = unscopables[i];
+    window[name] = "Hello there";
+    result1 = result2 = undefined;
+    test(function () {
+        assert_true(Element.prototype[Symbol.unscopables][name]);
+        var div = document.querySelector('#testDiv');
+        div.setAttribute(
+            "onclick", "result1 = " + name + "; result2 = this." + name + ";");
+        div.dispatchEvent(new Event("click"));
+        assert_equals(typeof result1, "string");
+        assert_equals(typeof result2, "function");
+    }, name + "() should be unscopable");
+}
+</script>
diff --git a/testing/web-platform/tests/dom/nodes/rootNode.html b/testing/web-platform/tests/dom/nodes/rootNode.html
new file mode 100644
index 000000000..66343e7e2
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/rootNode.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset=utf-8>
+<title>Node.prototype.getRootNode()</title>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-node-getrootnode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<script>
+
+test(function () {
+    var element = document.createElement('div');
+    assert_equals(element.getRootNode(), element, 'getRootNode() on an element without a parent must return the element itself');
+
+    var text = document.createTextNode('');
+    assert_equals(text.getRootNode(), text, 'getRootNode() on a text node without a parent must return the text node itself');
+
+    var processingInstruction = document.createProcessingInstruction('target', 'data');
+    assert_equals(processingInstruction.getRootNode(), processingInstruction, 'getRootNode() on a processing instruction node without a parent must return the processing instruction node itself');
+
+    assert_equals(document.getRootNode(), document, 'getRootNode() on a document node must return the document itself');
+
+}, 'getRootNode() must return the context object when it does not have any parent');
+
+test(function () {
+    var parent = document.createElement('div');
+
+    var element = document.createElement('div');
+    parent.appendChild(element);
+    assert_equals(element.getRootNode(), parent, 'getRootNode() on an element with a single ancestor must return the parent node');
+
+    var text = document.createTextNode('');
+    parent.appendChild(text);
+    assert_equals(text.getRootNode(), parent, 'getRootNode() on a text node with a single ancestor must return the parent node');
+
+    var processingInstruction = document.createProcessingInstruction('target', 'data');
+    parent.appendChild(processingInstruction)
+    assert_equals(processingInstruction.getRootNode(), parent, 'getRootNode() on a processing instruction node with a single ancestor must return the parent node');
+
+}, 'getRootNode() must return the parent node of the context object when the context object has a single ancestor not in a document');
+
+test(function () {
+    var parent = document.createElement('div');
+    document.body.appendChild(parent);
+
+    var element = document.createElement('div');
+    parent.appendChild(element);
+    assert_equals(element.getRootNode(), document, 'getRootNode() on an element inside a document must return the document');
+
+    var text = document.createTextNode('');
+    parent.appendChild(text);
+    assert_equals(text.getRootNode(), document, 'getRootNode() on a text node inside a document must return the document');
+
+    var processingInstruction = document.createProcessingInstruction('target', 'data');
+    parent.appendChild(processingInstruction)
+    assert_equals(processingInstruction.getRootNode(), document, 'getRootNode() on a processing instruction node inside a document must return the document');
+}, 'getRootNode() must return the document when a node is in document');
+
+test(function () {
+    var fragment = document.createDocumentFragment();
+    var parent = document.createElement('div');
+    fragment.appendChild(parent);
+
+    var element = document.createElement('div');
+    parent.appendChild(element);
+    assert_equals(element.getRootNode(), fragment, 'getRootNode() on an element inside a document fragment must return the fragment');
+
+    var text = document.createTextNode('');
+    parent.appendChild(text);
+    assert_equals(text.getRootNode(), fragment, 'getRootNode() on a text node inside a document fragment must return the fragment');
+
+    var processingInstruction = document.createProcessingInstruction('target', 'data');
+    parent.appendChild(processingInstruction)
+    assert_equals(processingInstruction.getRootNode(), fragment,
+        'getRootNode() on a processing instruction node inside a document fragment must return the fragment');
+}, 'getRootNode() must return a document fragment when a node is in the fragment');
+
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/dom/nodes/selectors.js b/testing/web-platform/tests/dom/nodes/selectors.js
new file mode 100644
index 000000000..ac722a6fe
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/selectors.js
@@ -0,0 +1,734 @@
+// Bit-mapped flags to indicate which tests the selector is suitable for
+var TEST_QSA              = 0x01; // querySelector() and querySelectorAll() tests
+var TEST_FIND             = 0x04; // find() and findAll() tests, may be unsuitable for querySelector[All]
+var TEST_MATCH            = 0x10; // matches() tests
+
+/*
+ * All of these invalid selectors should result in a SyntaxError being thrown by the APIs.
+ *
+ *   name:     A descriptive name of the selector being tested
+ *   selector: The selector to test
+ */
+var invalidSelectors = [
+  {name: "Empty String",                 selector: ""},
+  {name: "Invalid character",            selector: "["},
+  {name: "Invalid character",            selector: "]"},
+  {name: "Invalid character",            selector: "("},
+  {name: "Invalid character",            selector: ")"},
+  {name: "Invalid character",            selector: "{"},
+  {name: "Invalid character",            selector: "}"},
+  {name: "Invalid character",            selector: "<"},
+  {name: "Invalid character",            selector: ">"},
+  {name: "Invalid ID",                   selector: "#"},
+  {name: "Invalid group of selectors",   selector: "div,"},
+  {name: "Invalid class",                selector: "."},
+  {name: "Invalid class",                selector: ".5cm"},
+  {name: "Invalid class",                selector: "..test"},
+  {name: "Invalid class",                selector: ".foo..quux"},
+  {name: "Invalid class",                selector: ".bar."},
+  {name: "Invalid combinator",           selector: "div & address, p"},
+  {name: "Invalid combinator",           selector: "div ++ address, p"},
+  {name: "Invalid combinator",           selector: "div ~~ address, p"},
+  {name: "Invalid [att=value] selector", selector: "[*=test]"},
+  {name: "Invalid [att=value] selector", selector: "[*|*=test]"},
+  {name: "Invalid [att=value] selector", selector: "[class= space unquoted ]"},
+  {name: "Unknown pseudo-class",         selector: "div:example"},
+  {name: "Unknown pseudo-class",         selector: ":example"},
+  {name: "Unknown pseudo-element",       selector: "div::example"},
+  {name: "Unknown pseudo-element",       selector: "::example"},
+  {name: "Invalid pseudo-element",       selector: ":::before"},
+  {name: "Undeclared namespace",         selector: "ns|div"},
+  {name: "Undeclared namespace",         selector: ":not(ns|div)"},
+  {name: "Invalid namespace",            selector: "^|div"},
+  {name: "Invalid namespace",            selector: "$|div"}
+];
+
+/*
+ * All of these should be valid selectors, expected to match zero or more elements in the document.
+ * None should throw any errors.
+ *
+ *   name:     A descriptive name of the selector being tested
+ *   selector: The selector to test
+ *   expect:   A list of IDs of the elements expected to be matched. List must be given in tree order.
+ *   exclude:  An array of contexts to exclude from testing. The valid values are:
+ *             ["document", "element", "fragment", "detached", "html", "xhtml"]
+ *             The "html" and "xhtml" values represent the type of document being queried. These are useful
+ *             for tests that are affected by differences between HTML and XML, such as case sensitivity.
+ *   level:    An integer indicating the CSS or Selectors level in which the selector being tested was introduced.
+ *   testType: A bit-mapped flag indicating the type of test.
+ *
+ * Note: Interactive pseudo-classes (:active :hover and :focus) have not been tested in this test suite.
+ */
+var validSelectors = [
+  // Type Selector
+  {name: "Type selector, matching html element", selector: "html", expect: ["html"],          exclude: ["element", "fragment", "detached"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Type selector, matching html element", selector: "html", expect: [] /*no matches*/, exclude: ["document"],                        level: 1, testType: TEST_QSA},
+  {name: "Type selector, matching body element", selector: "body", expect: ["body"],          exclude: ["element", "fragment", "detached"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Type selector, matching body element", selector: "body", expect: [] /*no matches*/, exclude: ["document"],                        level: 1, testType: TEST_QSA},
+
+  // Universal Selector
+  // Testing "*" for entire an entire context node is handled separately.
+  {name: "Universal selector, matching all children of element with specified ID",       selector: "#universal>*",   expect: ["universal-p1", "universal-hr1", "universal-pre1", "universal-p2", "universal-address1"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Universal selector, matching all grandchildren of element with specified ID",  selector: "#universal>*>*", expect: ["universal-code1", "universal-span1", "universal-a1", "universal-code2"],                 level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Universal selector, matching all children of empty element with specified ID", selector: "#empty>*",       expect: [] /*no matches*/,                                                                         level: 2, testType: TEST_QSA},
+  {name: "Universal selector, matching all descendants of element with specified ID",    selector: "#universal *",   expect: ["universal-p1", "universal-code1", "universal-hr1", "universal-pre1", "universal-span1", "universal-p2", "universal-a1", "universal-address1", "universal-code2", "universal-a2"], level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // Attribute Selectors
+  // - presence                  [att]
+  {name: "Attribute presence selector, matching align attribute with value",                    selector: ".attr-presence-div1[align]",                             expect: ["attr-presence-div1"],                                             level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, matching align attribute with empty value",              selector: ".attr-presence-div2[align]",                             expect: ["attr-presence-div2"],                                             level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, matching title attribute, case insensitivity",           selector: "#attr-presence [TiTlE]",                                 expect: ["attr-presence-a1", "attr-presence-span1"], exclude: ["xhtml"],    level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, not matching title attribute, case sensitivity",         selector: "#attr-presence [TiTlE]",                                 expect: [],                                          exclude: ["html"],     level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, matching custom data-* attribute",                       selector: "[data-attr-presence]",                                   expect: ["attr-presence-pre1", "attr-presence-blockquote1"],                level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, not matching attribute with similar name",               selector: ".attr-presence-div3[align], .attr-presence-div4[align]", expect: [] /*no matches*/,                                                  level: 2, testType: TEST_QSA},
+  {name: "Attribute presence selector, matching attribute with non-ASCII characters",           selector: "ul[data-中文]",                                            expect: ["attr-presence-ul1"],                                              level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, not matching default option without selected attribute", selector: "#attr-presence-select1 option[selected]",                expect: [] /* no matches */,                                                level: 2, testType: TEST_QSA},
+  {name: "Attribute presence selector, matching option with selected attribute",                selector: "#attr-presence-select2 option[selected]",                expect: ["attr-presence-select2-option4"],                                  level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, matching multiple options with selected attributes",     selector: "#attr-presence-select3 option[selected]",                expect: ["attr-presence-select3-option2", "attr-presence-select3-option3"], level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - value                     [att=val]
+  {name: "Attribute value selector, matching align attribute with value",                                    selector: "#attr-value [align=\"center\"]",                                     expect: ["attr-value-div1"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector, matching align attribute with empty value",                              selector: "#attr-value [align=\"\"]",                                           expect: ["attr-value-div2"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector, not matching align attribute with partial value",                        selector: "#attr-value [align=\"c\"]",                                          expect: [] /*no matches*/,   level: 2, testType: TEST_QSA},
+  {name: "Attribute value selector, not matching align attribute with incorrect value",                      selector: "#attr-value [align=\"centera\"]",                                    expect: [] /*no matches*/,   level: 2, testType: TEST_QSA},
+  {name: "Attribute value selector, matching custom data-* attribute with unicode escaped value",            selector: "[data-attr-value=\"\\e9\"]",                                         expect: ["attr-value-div3"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector, matching custom data-* attribute with escaped character",                selector: "[data-attr-value\_foo=\"\\e9\"]",                                    expect: ["attr-value-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector with single-quoted value, matching multiple inputs with type attributes", selector: "#attr-value input[type='hidden'],#attr-value input[type='radio']",   expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector with double-quoted value, matching multiple inputs with type attributes", selector: "#attr-value input[type=\"hidden\"],#attr-value input[type='radio']", expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector with unquoted value, matching multiple inputs with type attributes",      selector: "#attr-value input[type=hidden],#attr-value input[type=radio]",       expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector, matching attribute with value using non-ASCII characters",               selector: "[data-attr-value=中文]",                                               expect: ["attr-value-div5"], level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - whitespace-separated list [att~=val]
+  {name: "Attribute whitespace-separated list selector, matching class attribute with value",                                  selector: "#attr-whitespace [class~=\"div1\"]",                                        expect: ["attr-whitespace-div1"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector, not matching class attribute with empty value",                        selector: "#attr-whitespace [class~=\"\"]",                                            expect: [] /*no matches*/ ,       level: 2, testType: TEST_QSA},
+  {name: "Attribute whitespace-separated list selector, not matching class attribute with partial value",                      selector: "[data-attr-whitespace~=\"div\"]",                                           expect: [] /*no matches*/ ,       level: 2, testType: TEST_QSA},
+  {name: "Attribute whitespace-separated list selector, matching custom data-* attribute with unicode escaped value",          selector: "[data-attr-whitespace~=\"\\0000e9\"]",                                      expect: ["attr-whitespace-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector, matching custom data-* attribute with escaped character",              selector: "[data-attr-whitespace\_foo~=\"\\e9\"]",                                     expect: ["attr-whitespace-div5"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with single-quoted value, matching multiple links with rel attributes", selector: "#attr-whitespace a[rel~='bookmark'],  #attr-whitespace a[rel~='nofollow']", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with double-quoted value, matching multiple links with rel attributes", selector: "#attr-whitespace a[rel~=\"bookmark\"],#attr-whitespace a[rel~='nofollow']", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with unquoted value, matching multiple links with rel attributes",      selector: "#attr-whitespace a[rel~=bookmark],    #attr-whitespace a[rel~=nofollow]",   expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with double-quoted value, not matching value with space",               selector: "#attr-whitespace a[rel~=\"book mark\"]",                                    expect: [] /* no matches */,      level: 2, testType: TEST_QSA},
+  {name: "Attribute whitespace-separated list selector, matching title attribute with value using non-ASCII characters",       selector: "#attr-whitespace [title~=中文]",                                              expect: ["attr-whitespace-p1"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - hyphen-separated list     [att|=val]
+  {name: "Attribute hyphen-separated list selector, not matching unspecified lang attribute",    selector: "#attr-hyphen-div1[lang|=\"en\"]",    expect: [] /*no matches*/,    level: 2, testType: TEST_QSA},
+  {name: "Attribute hyphen-separated list selector, matching lang attribute with exact value",   selector: "#attr-hyphen-div2[lang|=\"fr\"]",    expect: ["attr-hyphen-div2"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute hyphen-separated list selector, matching lang attribute with partial value", selector: "#attr-hyphen-div3[lang|=\"en\"]",    expect: ["attr-hyphen-div3"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute hyphen-separated list selector, not matching incorrect value",               selector: "#attr-hyphen-div4[lang|=\"es-AR\"]", expect: [] /*no matches*/,    level: 2, testType: TEST_QSA},
+
+  // - substring begins-with     [att^=val] (Level 3)
+  {name: "Attribute begins with selector, matching href attributes beginning with specified substring",                             selector: "#attr-begins a[href^=\"http://www\"]", expect: ["attr-begins-a1", "attr-begins-a3"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute begins with selector, matching lang attributes beginning with specified substring, ",                           selector: "#attr-begins [lang^=\"en-\"]",         expect: ["attr-begins-div2", "attr-begins-div4"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute begins with selector, not matching class attribute not beginning with specified substring",                     selector: "#attr-begins [class^=apple]",          expect: [] /*no matches*/,                        level: 3, testType: TEST_QSA},
+  {name: "Attribute begins with selector with single-quoted value, matching class attribute beginning with specified substring",    selector: "#attr-begins [class^=' apple']",       expect: ["attr-begins-p1"],                       level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute begins with selector with double-quoted value, matching class attribute beginning with specified substring",    selector: "#attr-begins [class^=\" apple\"]",     expect: ["attr-begins-p1"],                       level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute begins with selector with unquoted value, not matching class attribute not beginning with specified substring", selector: "#attr-begins [class^= apple]",         expect: [] /*no matches*/,                        level: 3, testType: TEST_QSA},
+
+  // - substring ends-with       [att$=val] (Level 3)
+  {name: "Attribute ends with selector, matching href attributes ending with specified substring",                             selector: "#attr-ends a[href$=\".org\"]",   expect: ["attr-ends-a1", "attr-ends-a3"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute ends with selector, matching lang attributes ending with specified substring, ",                           selector: "#attr-ends [lang$=\"-CH\"]",     expect: ["attr-ends-div2", "attr-ends-div4"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute ends with selector, not matching class attribute not ending with specified substring",                     selector: "#attr-ends [class$=apple]",      expect: [] /*no matches*/,                    level: 3, testType: TEST_QSA},
+  {name: "Attribute ends with selector with single-quoted value, matching class attribute ending with specified substring",    selector: "#attr-ends [class$='apple ']",   expect: ["attr-ends-p1"],                     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute ends with selector with double-quoted value, matching class attribute ending with specified substring",    selector: "#attr-ends [class$=\"apple \"]", expect: ["attr-ends-p1"],                     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute ends with selector with unquoted value, not matching class attribute not ending with specified substring", selector: "#attr-ends [class$=apple ]",     expect: [] /*no matches*/,                    level: 3, testType: TEST_QSA},
+
+  // - substring contains        [att*=val] (Level 3)
+  {name: "Attribute contains selector, matching href attributes beginning with specified substring",                          selector: "#attr-contains a[href*=\"http://www\"]",     expect: ["attr-contains-a1", "attr-contains-a3"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector, matching href attributes ending with specified substring",                             selector: "#attr-contains a[href*=\".org\"]",           expect: ["attr-contains-a1", "attr-contains-a2"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector, matching href attributes containing specified substring",                              selector: "#attr-contains a[href*=\".example.\"]",      expect: ["attr-contains-a1", "attr-contains-a3"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector, matching lang attributes beginning with specified substring, ",                        selector: "#attr-contains [lang*=\"en-\"]",             expect: ["attr-contains-div2", "attr-contains-div6"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector, matching lang attributes ending with specified substring, ",                           selector: "#attr-contains [lang*=\"-CH\"]",             expect: ["attr-contains-div3", "attr-contains-div5"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute beginning with specified substring", selector: "#attr-contains [class*=' apple']",           expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute ending with specified substring",    selector: "#attr-contains [class*='orange ']",          expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute containing specified substring",     selector: "#attr-contains [class*='ple banana ora']",   expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute beginning with specified substring", selector: "#attr-contains [class*=\" apple\"]",         expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute ending with specified substring",    selector: "#attr-contains [class*=\"orange \"]",        expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute containing specified substring",     selector: "#attr-contains [class*=\"ple banana ora\"]", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute beginning with specified substring",      selector: "#attr-contains [class*= apple]",             expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute ending with specified substring",         selector: "#attr-contains [class*=orange ]",            expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute containing specified substring",          selector: "#attr-contains [class*= banana ]",           expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // Pseudo-classes
+  // - :root                 (Level 3)
+  {name: ":root pseudo-class selector, matching document root element",      selector: ":root", expect: ["html"],          exclude: ["element", "fragment", "detached"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":root pseudo-class selector, not matching document root element",  selector: ":root", expect: [] /*no matches*/, exclude: ["document"],                        level: 3, testType: TEST_QSA},
+
+  // - :nth-child(n)         (Level 3)
+  // XXX write descriptions
+  {name: ":nth-child selector, matching the third child element",                              selector: "#pseudo-nth-table1 :nth-child(3)", expect: ["pseudo-nth-td3", "pseudo-nth-td9", "pseudo-nth-tr3", "pseudo-nth-td15"],                    level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-child selector, matching every third child element",                            selector: "#pseudo-nth li:nth-child(3n)",     expect: ["pseudo-nth-li3", "pseudo-nth-li6", "pseudo-nth-li9", "pseudo-nth-li12"],                    level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-child selector, matching every second child element, starting from the fourth", selector: "#pseudo-nth li:nth-child(2n+4)",   expect: ["pseudo-nth-li4", "pseudo-nth-li6", "pseudo-nth-li8", "pseudo-nth-li10", "pseudo-nth-li12"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-child selector, matching every fourth child element, starting from the third",  selector: "#pseudo-nth-p1 :nth-child(4n-1)",  expect: ["pseudo-nth-em2", "pseudo-nth-span3"],                                                       level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :nth-last-child       (Level 3)
+  {name: ":nth-last-child selector, matching the third last child element",                                           selector: "#pseudo-nth-table1 :nth-last-child(3)", expect: ["pseudo-nth-tr1", "pseudo-nth-td4", "pseudo-nth-td10", "pseudo-nth-td16"],                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every third child element from the end",                                 selector: "#pseudo-nth li:nth-last-child(3n)",     expect: ["pseudo-nth-li1", "pseudo-nth-li4", "pseudo-nth-li7", "pseudo-nth-li10"],                  level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every second child element from the end, starting from the fourth last", selector: "#pseudo-nth li:nth-last-child(2n+4)",   expect: ["pseudo-nth-li1", "pseudo-nth-li3", "pseudo-nth-li5", "pseudo-nth-li7", "pseudo-nth-li9"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every fourth element from the end, starting from the third last",        selector: "#pseudo-nth-p1 :nth-last-child(4n-1)",  expect: ["pseudo-nth-span2", "pseudo-nth-span4"],                                                   level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :nth-of-type(n)       (Level 3)
+  {name: ":nth-of-type selector, matching the third em element",                                        selector: "#pseudo-nth-p1 em:nth-of-type(3)",      expect: ["pseudo-nth-em3"],                                                                                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-of-type selector, matching every second element of their type",                          selector: "#pseudo-nth-p1 :nth-of-type(2n)",       expect: ["pseudo-nth-em2", "pseudo-nth-span2", "pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-of-type selector, matching every second elemetn of their type, starting from the first", selector: "#pseudo-nth-p1 span:nth-of-type(2n-1)", expect: ["pseudo-nth-span1", "pseudo-nth-span3"],                                                           level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :nth-last-of-type(n)  (Level 3)
+  {name: ":nth-last-of-type selector, matching the thrid last em element", selector: "#pseudo-nth-p1 em:nth-last-of-type(3)",      expect: ["pseudo-nth-em2"],                                                                                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-of-type selector, matching every second last element of their type", selector: "#pseudo-nth-p1 :nth-last-of-type(2n)",       expect: ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1", "pseudo-nth-em3", "pseudo-nth-span3"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-of-type selector, matching every second last element of their type, starting from the last", selector: "#pseudo-nth-p1 span:nth-last-of-type(2n-1)", expect: ["pseudo-nth-span2", "pseudo-nth-span4"],                                                           level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :first-of-type        (Level 3)
+  {name: ":first-of-type selector, matching the first em element", selector: "#pseudo-nth-p1 em:first-of-type",      expect: ["pseudo-nth-em1"],                                           level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":first-of-type selector, matching the first of every type of element", selector: "#pseudo-nth-p1 :first-of-type",        expect: ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":first-of-type selector, matching the first td element in each table row", selector: "#pseudo-nth-table1 tr :first-of-type", expect: ["pseudo-nth-td1", "pseudo-nth-td7", "pseudo-nth-td13"],      level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :last-of-type         (Level 3)
+  {name: ":last-of-type selector, matching the last em elemnet", selector: "#pseudo-nth-p1 em:last-of-type",      expect: ["pseudo-nth-em4"],                                           level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":last-of-type selector, matching the last of every type of element", selector: "#pseudo-nth-p1 :last-of-type",        expect: ["pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":last-of-type selector, matching the last td element in each table row", selector: "#pseudo-nth-table1 tr :last-of-type", expect: ["pseudo-nth-td6", "pseudo-nth-td12", "pseudo-nth-td18"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :first-child
+  {name: ":first-child pseudo-class selector, matching first child div element",          selector: "#pseudo-first-child div:first-child",                                        expect: ["pseudo-first-child-div1"],                                                          level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: ":first-child pseudo-class selector, doesn't match non-first-child elements",    selector: ".pseudo-first-child-div2:first-child, .pseudo-first-child-div3:first-child", expect: [] /*no matches*/,                                                                    level: 2, testType: TEST_QSA},
+  {name: ":first-child pseudo-class selector, matching first-child of multiple elements", selector: "#pseudo-first-child span:first-child",                                       expect: ["pseudo-first-child-span1", "pseudo-first-child-span3", "pseudo-first-child-span5"], level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - :last-child           (Level 3)
+  {name: ":last-child pseudo-class selector, matching last child div element",           selector: "#pseudo-last-child div:last-child",                                       expect: ["pseudo-last-child-div3"],                                                        level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":last-child pseudo-class selector, doesn't match non-last-child elements",     selector: ".pseudo-last-child-div1:last-child, .pseudo-last-child-div2:first-child", expect: [] /*no matches*/,                                                                 level: 3, testType: TEST_QSA},
+  {name: ":last-child pseudo-class selector, matching first-child of multiple elements", selector: "#pseudo-last-child span:last-child",                                      expect: ["pseudo-last-child-span2", "pseudo-last-child-span4", "pseudo-last-child-span6"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :only-child           (Level 3)
+  {name: ":pseudo-only-child pseudo-class selector, matching all only-child elements", selector: "#pseudo-only :only-child", expect: ["pseudo-only-span1"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":pseudo-only-child pseudo-class selector, matching only-child em elements",  selector: "#pseudo-only em:only-child", expect: [] /*no matches*/,   level: 3, testType: TEST_QSA},
+
+  // - :only-of-type         (Level 3)
+  {name: ":pseudo-only-of-type pseudo-class selector, matching all elements with no siblings of the same type", selector: "#pseudo-only :only-of-type", expect: ["pseudo-only-span1", "pseudo-only-em1"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":pseudo-only-of-type pseudo-class selector, matching em elements with no siblings of the same type",  selector: "#pseudo-only em:only-of-type", expect: ["pseudo-only-em1"],                    level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :empty                (Level 3)
+  {name: ":empty pseudo-class selector, matching empty p elements",   selector: "#pseudo-empty p:empty", expect: ["pseudo-empty-p1", "pseudo-empty-p2"],                       level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":empty pseudo-class selector, matching all empty elements", selector: "#pseudo-empty :empty",  expect: ["pseudo-empty-p1", "pseudo-empty-p2", "pseudo-empty-span1"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :link and :visited
+  // Implementations may treat all visited links as unvisited, so these cannot be tested separately.
+  // The only guarantee is that ":link,:visited" matches the set of all visited and unvisited links and that they are individually mutually exclusive sets.
+  {name: ":link and :visited pseudo-class selectors, matching a and area elements with href attributes",        selector: "#pseudo-link :link, #pseudo-link :visited", expect: ["pseudo-link-a1", "pseudo-link-a2", "pseudo-link-area1"],                                level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: ":link and :visited pseudo-class selectors, matching link elements with href attributes",              selector: "#head :link, #head :visited",               expect: ["pseudo-link-link1", "pseudo-link-link2"], exclude: ["element", "fragment", "detached"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: ":link and :visited pseudo-class selectors, not matching link elements with href attributes",          selector: "#head :link, #head :visited",               expect: [] /*no matches*/,                          exclude: ["document"],                        level: 1, testType: TEST_QSA},
+  {name: ":link and :visited pseudo-class selectors, chained, mutually exclusive pseudo-classes match nothing", selector: ":link:visited",                             expect: [] /*no matches*/,                          exclude: ["document"],                        level: 1, testType: TEST_QSA},
+
+  // - :target               (Level 3)
+  {name: ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", selector: ":target", expect: [] /*no matches*/, exclude: ["document", "element"],  level: 3, testType: TEST_QSA},
+  {name: ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", selector: ":target", expect: ["target"],        exclude: ["fragment", "detached"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :lang()
+  {name: ":lang pseudo-class selector, matching inherited language",                     selector: "#pseudo-lang-div1:lang(en)",    expect: ["pseudo-lang-div1"], exclude: ["detached", "fragment"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: ":lang pseudo-class selector, not matching element with no inherited language", selector: "#pseudo-lang-div1:lang(en)",    expect: [] /*no matches*/,    exclude: ["document", "element"],  level: 2, testType: TEST_QSA},
+  {name: ":lang pseudo-class selector, matching specified language with exact value",    selector: "#pseudo-lang-div2:lang(fr)",    expect: ["pseudo-lang-div2"],                                    level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: ":lang pseudo-class selector, matching specified language with partial value",  selector: "#pseudo-lang-div3:lang(en)",    expect: ["pseudo-lang-div3"],                                    level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: ":lang pseudo-class selector, not matching incorrect language",                 selector: "#pseudo-lang-div4:lang(es-AR)", expect: [] /*no matches*/,                                       level: 2, testType: TEST_QSA},
+
+  // - :enabled              (Level 3)
+  {name: ":enabled pseudo-class selector, matching all enabled form controls",  selector: "#pseudo-ui :enabled",  expect: ["pseudo-ui-input1", "pseudo-ui-input2", "pseudo-ui-input3", "pseudo-ui-input4", "pseudo-ui-input5", "pseudo-ui-input6",
+                                                                                                                           "pseudo-ui-input7", "pseudo-ui-input8", "pseudo-ui-input9", "pseudo-ui-textarea1", "pseudo-ui-button1"],    level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :disabled             (Level 3)
+  {name: ":enabled pseudo-class selector, matching all disabled form controls", selector: "#pseudo-ui :disabled", expect: ["pseudo-ui-input10", "pseudo-ui-input11", "pseudo-ui-input12", "pseudo-ui-input13", "pseudo-ui-input14", "pseudo-ui-input15",
+                                                                                                                           "pseudo-ui-input16", "pseudo-ui-input17", "pseudo-ui-input18", "pseudo-ui-textarea2", "pseudo-ui-button2"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :checked              (Level 3)
+  {name: ":checked pseudo-class selector, matching checked radio buttons and checkboxes", selector: "#pseudo-ui :checked", expect: ["pseudo-ui-input4", "pseudo-ui-input6", "pseudo-ui-input13", "pseudo-ui-input15"],  level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :not(s)               (Level 3)
+  {name: ":not pseudo-class selector, matching ", selector: "#not>:not(div)",   expect: ["not-p1", "not-p2", "not-p3"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":not pseudo-class selector, matching ", selector: "#not * :not(:first-child)",   expect: ["not-em1", "not-em2", "not-em3"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":not pseudo-class selector, matching nothing", selector: ":not(*)",   expect: [] /* no matches */, level: 3, testType: TEST_QSA},
+  {name: ":not pseudo-class selector, matching nothing", selector: ":not(*|*)", expect: [] /* no matches */, level: 3, testType: TEST_QSA},
+
+  // Pseudo-elements
+  // - ::first-line
+  {name: ":first-line pseudo-element (one-colon syntax) selector, not matching any elements",    selector: "#pseudo-element:first-line",    expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "::first-line pseudo-element (two-colon syntax) selector, not matching any elements",   selector: "#pseudo-element::first-line",   expect: [] /*no matches*/, level: 3, testType: TEST_QSA},
+
+  // - ::first-letter
+  {name: ":first-letter pseudo-element (one-colon syntax) selector, not matching any elements",  selector: "#pseudo-element:first-letter",  expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "::first-letter pseudo-element (two-colon syntax) selector, not matching any elements", selector: "#pseudo-element::first-letter", expect: [] /*no matches*/, level: 3, testType: TEST_QSA},
+
+  // - ::before
+  {name: ":before pseudo-element (one-colon syntax) selector, not matching any elements",        selector: "#pseudo-element:before",        expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "::before pseudo-element (two-colon syntax) selector, not matching any elements",       selector: "#pseudo-element::before",       expect: [] /*no matches*/, level: 3, testType: TEST_QSA},
+
+  // - ::after
+  {name: ":after pseudo-element (one-colon syntax) selector, not matching any elements",         selector: "#pseudo-element:after",         expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "::after pseudo-element (two-colon syntax) selector, not matching any elements",        selector: "#pseudo-element::after",        expect: [] /*no matches*/, level: 3, testType: TEST_QSA},
+
+  // Class Selectors
+  {name: "Class selector, matching element with specified class",                                           selector: ".class-p",                expect: ["class-p1","class-p2", "class-p3"],                                              level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, chained, matching only elements with all specified classes",                      selector: "#class .apple.orange.banana",    expect: ["class-div1", "class-div2", "class-p4", "class-div3", "class-p6", "class-div4"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class Selector, chained, with type selector",                                                     selector: "div.apple.banana.orange", expect: ["class-div1", "class-div2", "class-div3", "class-div4"],                         level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, matching element with class value using non-ASCII characters (1)",                selector: ".\u53F0\u5317Ta\u0301ibe\u030Ci",             expect: ["class-span1"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, matching multiple elements with class value using non-ASCII characters",          selector: ".\u53F0\u5317",                     expect: ["class-span1","class-span2"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, chained, matching element with multiple class values using non-ASCII characters (1)", selector: ".\u53F0\u5317Ta\u0301ibe\u030Ci.\u53F0\u5317",          expect: ["class-span1"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, matching element with class with escaped character",                              selector: ".foo\\:bar",              expect: ["class-span3"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, matching element with class with escaped character",                              selector: ".test\\.foo\\[5\\]bar",   expect: ["class-span4"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+
+  // ID Selectors
+  {name: "ID selector, matching element with specified id",           selector: "#id #id-div1",              expect: ["id-div1"],            level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, chained, matching element with specified id",  selector: "#id-div1, #id-div1",        expect: ["id-div1"],            level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, chained, matching element with specified id",  selector: "#id-div1, #id-div2",        expect: ["id-div1", "id-div2"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID Selector, chained, with type selector",                  selector: "div#id-div1, div#id-div2",  expect: ["id-div1", "id-div2"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, not matching non-existent descendant",         selector: "#id #none",                 expect: [] /*no matches*/,      level: 1, testType: TEST_QSA},
+  {name: "ID selector, not matching non-existent ancestor",           selector: "#none #id-div1",            expect: [] /*no matches*/,      level: 1, testType: TEST_QSA},
+  {name: "ID selector, matching multiple elements with duplicate id", selector: "#id-li-duplicate",          expect: ["id-li-duplicate", "id-li-duplicate", "id-li-duplicate", "id-li-duplicate"], level: 1, testType: TEST_QSA | TEST_MATCH},
+
+  {name: "ID selector, matching id value using non-ASCII characters (1)",    selector: "#\u53F0\u5317Ta\u0301ibe\u030Ci",           expect: ["\u53F0\u5317Ta\u0301ibe\u030Ci"],       level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, matching id value using non-ASCII characters (2)",    selector: "#\u53F0\u5317",                   expect: ["\u53F0\u5317"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, matching id values using non-ASCII characters (1)", selector: "#\u53F0\u5317Ta\u0301ibe\u030Ci, #\u53F0\u5317",      expect: ["\u53F0\u5317Ta\u0301ibe\u030Ci", "\u53F0\u5317"], level: 1, testType: TEST_QSA | TEST_MATCH},
+
+  // XXX runMatchesTest() in level2-lib.js can't handle this because obtaining the expected nodes requires escaping characters when generating the selector from 'expect' values
+  {name: "ID selector, matching element with id with escaped character", selector: "#\\#foo\\:bar",         expect: ["#foo:bar"],         level: 1, testType: TEST_QSA},
+  {name: "ID selector, matching element with id with escaped character", selector: "#test\\.foo\\[5\\]bar", expect: ["test.foo[5]bar"],   level: 1, testType: TEST_QSA},
+
+  // Namespaces
+  // XXX runMatchesTest() in level2-lib.js can't handle these because non-HTML elements don't have a recognised id
+  {name: "Namespace selector, matching element with any namespace",        selector: "#any-namespace *|div", expect: ["any-namespace-div1", "any-namespace-div2", "any-namespace-div3", "any-namespace-div4"], level: 3, testType: TEST_QSA},
+  {name: "Namespace selector, matching div elements in no namespace only", selector: "#no-namespace |div",   expect: ["no-namespace-div3"], level: 3, testType: TEST_QSA},
+  {name: "Namespace selector, matching any elements in no namespace only", selector: "#no-namespace |*",     expect: ["no-namespace-div3"], level: 3, testType: TEST_QSA},
+
+  // Combinators
+  // - Descendant combinator ' '
+  {name: "Descendant combinator, matching element that is a descendant of an element with id",                 selector: "#descendant div",                   expect: ["descendant-div1", "descendant-div2", "descendant-div3", "descendant-div4"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element",                 selector: "body #descendant-div1",             expect: ["descendant-div1"], exclude: ["detached", "fragment"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element",                 selector: "div #descendant-div1",              expect: ["descendant-div1"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element with id",         selector: "#descendant #descendant-div2",      expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with class that is a descendant of an element with id",      selector: "#descendant .descendant-div2",      expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with class that is a descendant of an element with class",   selector: ".descendant-div1 .descendant-div3", expect: ["descendant-div3"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, not matching element with id that is not a descendant of an element with id", selector: "#descendant-div1 #descendant-div4", expect: [] /*no matches*/,                                      level: 1, testType: TEST_QSA},
+  {name: "Descendant combinator, whitespace characters",                                                       selector: "#descendant\t\r\n#descendant-div2", expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+
+  // - Descendant combinator '>>'
+  {name: "Descendant combinator '>>', matching element that is a descendant of an element with id",                 selector: "#descendant>>div",                   expect: ["descendant-div1", "descendant-div2", "descendant-div3", "descendant-div4"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator '>>', matching element with id that is a descendant of an element",                 selector: "body>>#descendant-div1",             expect: ["descendant-div1"], exclude: ["detached", "fragment"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator '>>', matching element with id that is a descendant of an element",                 selector: "div>>#descendant-div1",              expect: ["descendant-div1"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator '>>', matching element with id that is a descendant of an element with id",         selector: "#descendant>>#descendant-div2",      expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator '>>', matching element with class that is a descendant of an element with id",      selector: "#descendant>>.descendant-div2",      expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator '>>', matching element with class that is a descendant of an element with class",   selector: ".descendant-div1>>.descendant-div3", expect: ["descendant-div3"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator '>>', not matching element with id that is not a descendant of an element with id", selector: "#descendant-div1>>#descendant-div4", expect: [] /*no matches*/,                                      level: 1, testType: TEST_QSA},
+
+  // - Child combinator '>'
+  {name: "Child combinator, matching element that is a child of an element with id",                       selector: "#child>div",                          expect: ["child-div1", "child-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element",                       selector: "div>#child-div1",                     expect: ["child-div1"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element with id",               selector: "#child>#child-div1",                  expect: ["child-div1"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element with class",            selector: "#child-div1>.child-div2",             expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, matching element with class that is a child of an element with class",         selector: ".child-div1>.child-div2",             expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, not matching element with id that is not a child of an element with id",       selector: "#child>#child-div3",                  expect: [] /*no matches*/,            level: 2, testType: TEST_QSA},
+  {name: "Child combinator, not matching element with id that is not a child of an element with class",    selector: "#child-div1>.child-div3",             expect: [] /*no matches*/,            level: 2, testType: TEST_QSA},
+  {name: "Child combinator, not matching element with class that is not a child of an element with class", selector: ".child-div1>.child-div3",             expect: [] /*no matches*/,            level: 2, testType: TEST_QSA},
+  {name: "Child combinator, surrounded by whitespace",                                                     selector: "#child-div1\t\r\n>\t\r\n#child-div2", expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, whitespace after",                                                             selector: "#child-div1>\t\r\n#child-div2",       expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, whitespace before",                                                            selector: "#child-div1\t\r\n>#child-div2",       expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, no whitespace",                                                                selector: "#child-div1>#child-div2",             expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - Adjacent sibling combinator '+'
+  {name: "Adjacent sibling combinator, matching element that is an adjacent sibling of an element with id",                 selector: "#adjacent-div2+div",                                         expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element",                 selector: "div+#adjacent-div4",                                         expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element with id",         selector: "#adjacent-div2+#adjacent-div4",                              expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with id",      selector: "#adjacent-div2+.adjacent-div4",                              expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with class",   selector: ".adjacent-div2+.adjacent-div4",                              expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching p element that is an adjacent sibling of a div element",                    selector: "#adjacent div+p",                                            expect: ["adjacent-p2"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, not matching element with id that is not an adjacent sibling of an element with id", selector: "#adjacent-div2+#adjacent-p2, #adjacent-div2+#adjacent-div1", expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "Adjacent sibling combinator, surrounded by whitespace",                                                           selector: "#adjacent-p2\t\r\n+\t\r\n#adjacent-p3",                      expect: ["adjacent-p3"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, whitespace after",                                                                   selector: "#adjacent-p2+\t\r\n#adjacent-p3",                            expect: ["adjacent-p3"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, whitespace before",                                                                  selector: "#adjacent-p2\t\r\n+#adjacent-p3",                            expect: ["adjacent-p3"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, no whitespace",                                                                      selector: "#adjacent-p2+#adjacent-p3",                                  expect: ["adjacent-p3"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - General sibling combinator ~ (Level 3)
+  {name: "General sibling combinator, matching element that is a sibling of an element with id",                    selector: "#sibling-div2~div",                                        expect: ["sibling-div4", "sibling-div6"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, matching element with id that is a sibling of an element",                    selector: "div~#sibling-div4",                                        expect: ["sibling-div4"],                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, matching element with id that is a sibling of an element with id",            selector: "#sibling-div2~#sibling-div4",                              expect: ["sibling-div4"],                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, matching element with class that is a sibling of an element with id",         selector: "#sibling-div2~.sibling-div",                               expect: ["sibling-div4", "sibling-div6"],                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, matching p element that is a sibling of a div element",                       selector: "#sibling div~p",                                           expect: ["sibling-p2", "sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, not matching element with id that is not a sibling after a p element",        selector: "#sibling>p~div",                                           expect: [] /*no matches*/,                level: 3, testType: TEST_QSA},
+  {name: "General sibling combinator, not matching element with id that is not a sibling after an element with id", selector: "#sibling-div2~#sibling-div3, #sibling-div2~#sibling-div1", expect: [] /*no matches*/,                level: 3, testType: TEST_QSA},
+  {name: "General sibling combinator, surrounded by whitespace",                                                    selector: "#sibling-p2\t\r\n~\t\r\n#sibling-p3",                      expect: ["sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, whitespace after",                                                            selector: "#sibling-p2~\t\r\n#sibling-p3",                            expect: ["sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, whitespace before",                                                           selector: "#sibling-p2\t\r\n~#sibling-p3",                            expect: ["sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, no whitespace",                                                               selector: "#sibling-p2~#sibling-p3",                                  expect: ["sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // Group of selectors (comma)
+  {name: "Syntax, group of selectors separator, surrounded by whitespace", selector: "#group em\t\r \n,\t\r \n#group strong", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, whitespace after",         selector: "#group em,\t\r\n#group strong",         expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, whitespace before",        selector: "#group em\t\r\n,#group strong",         expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, no whitespace",            selector: "#group em,#group strong",               expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_QSA | TEST_MATCH},
+];
+
+
+/*
+ * These selectors are intended to be used with the find(), findAll() and matches() methods.  Expected results
+ * should be determined under the assumption that :scope will be prepended to the selector where appropriate,
+ * in accordance with the specification.
+ *
+ * All of these should be valid relative selectors, expected to match zero or more elements in the document.
+ * None should throw any errors.
+ *
+ *   name:      A descriptive name of the selector being tested
+ *
+ *   selector:  The selector to test
+ *
+ *   ctx:       A selector to obtain the context object to use for tests invoking context.find(),
+ *              and to use as a single reference node for tests invoking document.find().
+ *              Note: context = root.querySelector(ctx);
+ *
+ *   ref:       A selector to obtain the reference nodes to be used for the selector.
+ *              Note: If root is the document or an in-document element:
+ *                      refNodes = document.querySelectorAll(ref);
+ *                    Otherwise, if root is a fragment or detached element:
+ *                      refNodes = root.querySelectorAll(ref);
+ *
+ *   expect:    A list of IDs of the elements expected to be matched. List must be given in tree order.
+ *
+ *   unexpected: A list of IDs of some elements that are not expected to match the given selector.
+ *               This is used to verify that unexpected.matches(selector, refNode) does not match.
+ *
+ *   exclude:   An array of contexts to exclude from testing. The valid values are:
+ *              ["document", "element", "fragment", "detached", "html", "xhtml"]
+ *              The "html" and "xhtml" values represent the type of document being queried. These are useful
+ *              for tests that are affected by differences between HTML and XML, such as case sensitivity.
+ *
+ *   level:     An integer indicating the CSS or Selectors level in which the selector being tested was introduced.
+ *
+ *   testType:  A bit-mapped flag indicating the type of test.
+ *
+ * The test function for these tests accepts a specified root node, on which the methods will be invoked during the tests.
+ *
+ * Based on whether either 'context' or 'refNodes', or both, are specified the tests will execute the following methods:
+ *
+ * Where testType is TEST_FIND:
+ *
+ * context.findAll(selector, refNodes)
+ * context.findAll(selector)        // Only if refNodes is not specified
+ * root.findAll(selector, context)  // Only if refNodes is not specified
+ * root.findAll(selector, refNodes) // Only if context is not specified
+ * root.findAll(selector)           // Only if neither context nor refNodes is specified
+ *
+ * Where testType is TEST_QSA
+ *
+ * context.querySelectorAll(selector)
+ * root.querySelectorAll(selector)  // Only if neither context nor refNodes is specified
+ *
+ * Equivalent tests will be run for .find() as well.
+ * Note: Do not specify a testType of TEST_QSA where either implied :scope or explicit refNodes
+ * are required.
+ *
+ * Where testType is TEST_MATCH:
+ * For each expected result given, within the specified root:
+ *
+ * expect.matches(selector, context)    // Only where refNodes is not specified
+ * expect.matches(selector, refNodes)
+ * expect.matches(selector)             // Only if neither context nor refNodes is specified
+ *
+ * The tests involving refNodes for both find(), findAll() and matches() will each be run by passing the
+ * collection as a NodeList, an Array and, if there is only a single element, an Element node.
+ *
+ * Note: Interactive pseudo-classes (:active :hover and :focus) have not been tested in this test suite.
+ */
+
+var scopedSelectors = [
+  //{name: "", selector: "", ctx: "", ref: "", expect: [], level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  // Universal Selector
+  {name: "Universal selector, matching all children of the specified reference element",       selector: ">*",   ctx: "#universal", expect: ["universal-p1", "universal-hr1", "universal-pre1", "universal-p2", "universal-address1"], unexpected: ["universal", "empty"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Universal selector, matching all grandchildren of the specified reference element",  selector: ">*>*", ctx: "#universal", expect: ["universal-code1", "universal-span1", "universal-a1", "universal-code2"],                 unexpected: ["universal", "empty"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Universal selector, matching all children of the specified empty reference element", selector: ">*",   ctx: "#empty",     expect: [] /*no matches*/,                                                                         unexpected: ["universal", "empty"], level: 2, testType: TEST_QSA},
+  {name: "Universal selector, matching all descendants of the specified reference element",    selector: "*",    ctx: "#universal", expect: ["universal-p1", "universal-code1", "universal-hr1", "universal-pre1", "universal-span1",
+                                                                                                                                             "universal-p2", "universal-a1", "universal-address1", "universal-code2", "universal-a2"], unexpected: ["universal", "empty"], level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // Attribute Selectors
+  // - presence                  [att]
+  {name: "Attribute presence selector, matching align attribute with value",                    selector: ".attr-presence-div1[align]",                             ctx: "#attr-presence", expect: ["attr-presence-div1"],                                             level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, matching align attribute with empty value",              selector: ".attr-presence-div2[align]",                             ctx: "#attr-presence", expect: ["attr-presence-div2"],                                             level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, matching title attribute, case insensitivity",           selector: "[TiTlE]",                                                ctx: "#attr-presence", expect: ["attr-presence-a1", "attr-presence-span1"], exclude: ["xhtml"],    level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, not matching title attribute, case sensitivity",         selector: "[TiTlE]",                                                ctx: "#attr-presence", expect: [],                                          exclude: ["html"],     level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, matching custom data-* attribute",                       selector: "[data-attr-presence]",                                   ctx: "#attr-presence", expect: ["attr-presence-pre1", "attr-presence-blockquote1"],                level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, not matching attribute with similar name",               selector: ".attr-presence-div3[align], .attr-presence-div4[align]", ctx: "#attr-presence", expect: [] /*no matches*/,                                                  level: 2, testType: TEST_FIND},
+  {name: "Attribute presence selector, matching attribute with non-ASCII characters",           selector: "ul[data-中文]",                                            ctx: "#attr-presence", expect: ["attr-presence-ul1"],                                              level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, not matching default option without selected attribute", selector: "#attr-presence-select1 option[selected]",                ctx: "#attr-presence", expect: [] /* no matches */,                                                level: 2, testType: TEST_FIND},
+  {name: "Attribute presence selector, matching option with selected attribute",                selector: "#attr-presence-select2 option[selected]",                ctx: "#attr-presence", expect: ["attr-presence-select2-option4"],                                  level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, matching multiple options with selected attributes",     selector: "#attr-presence-select3 option[selected]",                ctx: "#attr-presence", expect: ["attr-presence-select3-option2", "attr-presence-select3-option3"], level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - value                     [att=val]
+  {name: "Attribute value selector, matching align attribute with value",                                    selector: "[align=\"center\"]",                                     ctx: "#attr-value", expect: ["attr-value-div1"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector, matching align attribute with empty value",                              selector: "[align=\"\"]",                                           ctx: "#attr-value", expect: ["attr-value-div2"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector, not matching align attribute with partial value",                        selector: "[align=\"c\"]",                                          ctx: "#attr-value", expect: [] /*no matches*/,   level: 2, testType: TEST_FIND},
+  {name: "Attribute value selector, not matching align attribute with incorrect value",                      selector: "[align=\"centera\"]",                                    ctx: "#attr-value", expect: [] /*no matches*/,   level: 2, testType: TEST_FIND},
+  {name: "Attribute value selector, matching custom data-* attribute with unicode escaped value",            selector: "[data-attr-value=\"\\e9\"]",                             ctx: "#attr-value", expect: ["attr-value-div3"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector, matching custom data-* attribute with escaped character",                selector: "[data-attr-value\_foo=\"\\e9\"]",                        ctx: "#attr-value", expect: ["attr-value-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector with single-quoted value, matching multiple inputs with type attributes", selector: "input[type='hidden'],#attr-value input[type='radio']",   ctx: "#attr-value", expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector with double-quoted value, matching multiple inputs with type attributes", selector: "input[type=\"hidden\"],#attr-value input[type='radio']", ctx: "#attr-value", expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector with unquoted value, matching multiple inputs with type attributes",      selector: "input[type=hidden],#attr-value input[type=radio]",       ctx: "#attr-value", expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector, matching attribute with value using non-ASCII characters",               selector: "[data-attr-value=中文]",                                   ctx: "#attr-value", expect: ["attr-value-div5"], level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - whitespace-separated list [att~=val]
+  {name: "Attribute whitespace-separated list selector, matching class attribute with value",                                  selector: "[class~=\"div1\"]",                                        ctx: "#attr-whitespace", expect: ["attr-whitespace-div1"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector, not matching class attribute with empty value",                        selector: "[class~=\"\"]",                                            ctx: "#attr-whitespace", expect: [] /*no matches*/ ,       level: 2, testType: TEST_FIND},
+  {name: "Attribute whitespace-separated list selector, not matching class attribute with partial value",                      selector: "[data-attr-whitespace~=\"div\"]",                                           ctx: "#attr-whitespace", expect: [] /*no matches*/ ,       level: 2, testType: TEST_FIND},
+  {name: "Attribute whitespace-separated list selector, matching custom data-* attribute with unicode escaped value",          selector: "[data-attr-whitespace~=\"\\0000e9\"]",                                      ctx: "#attr-whitespace", expect: ["attr-whitespace-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector, matching custom data-* attribute with escaped character",              selector: "[data-attr-whitespace\_foo~=\"\\e9\"]",                                     ctx: "#attr-whitespace", expect: ["attr-whitespace-div5"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with single-quoted value, matching multiple links with rel attributes", selector: "a[rel~='bookmark'],  #attr-whitespace a[rel~='nofollow']", ctx: "#attr-whitespace", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with double-quoted value, matching multiple links with rel attributes", selector: "a[rel~=\"bookmark\"],#attr-whitespace a[rel~='nofollow']", ctx: "#attr-whitespace", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with unquoted value, matching multiple links with rel attributes",      selector: "a[rel~=bookmark],    #attr-whitespace a[rel~=nofollow]",   ctx: "#attr-whitespace", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with double-quoted value, not matching value with space",               selector: "a[rel~=\"book mark\"]",                                    ctx: "#attr-whitespace", expect: [] /* no matches */,      level: 2, testType: TEST_FIND},
+  {name: "Attribute whitespace-separated list selector, matching title attribute with value using non-ASCII characters",       selector: "[title~=中文]",                                              ctx: "#attr-whitespace", expect: ["attr-whitespace-p1"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - hyphen-separated list     [att|=val]
+  {name: "Attribute hyphen-separated list selector, not matching unspecified lang attribute",    selector: "#attr-hyphen-div1[lang|=\"en\"]",    ctx: "#attr-hyphen", expect: [] /*no matches*/,    level: 2, testType: TEST_FIND},
+  {name: "Attribute hyphen-separated list selector, matching lang attribute with exact value",   selector: "#attr-hyphen-div2[lang|=\"fr\"]",    ctx: "#attr-hyphen", expect: ["attr-hyphen-div2"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute hyphen-separated list selector, matching lang attribute with partial value", selector: "#attr-hyphen-div3[lang|=\"en\"]",    ctx: "#attr-hyphen", expect: ["attr-hyphen-div3"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute hyphen-separated list selector, not matching incorrect value",               selector: "#attr-hyphen-div4[lang|=\"es-AR\"]", ctx: "#attr-hyphen", expect: [] /*no matches*/,    level: 2, testType: TEST_FIND},
+
+  // - substring begins-with     [att^=val] (Level 3)
+  {name: "Attribute begins with selector, matching href attributes beginning with specified substring",                             selector: "a[href^=\"http://www\"]", ctx: "#attr-begins", expect: ["attr-begins-a1", "attr-begins-a3"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute begins with selector, matching lang attributes beginning with specified substring, ",                           selector: "[lang^=\"en-\"]",         ctx: "#attr-begins", expect: ["attr-begins-div2", "attr-begins-div4"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute begins with selector, not matching class attribute not beginning with specified substring",                     selector: "[class^=apple]",          ctx: "#attr-begins", expect: [] /*no matches*/,                        level: 3, testType: TEST_FIND},
+  {name: "Attribute begins with selector with single-quoted value, matching class attribute beginning with specified substring",    selector: "[class^=' apple']",       ctx: "#attr-begins", expect: ["attr-begins-p1"],                       level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute begins with selector with double-quoted value, matching class attribute beginning with specified substring",    selector: "[class^=\" apple\"]",     ctx: "#attr-begins", expect: ["attr-begins-p1"],                       level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute begins with selector with unquoted value, not matching class attribute not beginning with specified substring", selector: "[class^= apple]",         ctx: "#attr-begins", expect: [] /*no matches*/,                        level: 3, testType: TEST_FIND},
+
+  // - substring ends-with       [att$=val] (Level 3)
+  {name: "Attribute ends with selector, matching href attributes ending with specified substring",                             selector: "a[href$=\".org\"]",   ctx: "#attr-ends", expect: ["attr-ends-a1", "attr-ends-a3"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute ends with selector, matching lang attributes ending with specified substring, ",                           selector: "[lang$=\"-CH\"]",     ctx: "#attr-ends", expect: ["attr-ends-div2", "attr-ends-div4"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute ends with selector, not matching class attribute not ending with specified substring",                     selector: "[class$=apple]",      ctx: "#attr-ends", expect: [] /*no matches*/,                    level: 3, testType: TEST_FIND},
+  {name: "Attribute ends with selector with single-quoted value, matching class attribute ending with specified substring",    selector: "[class$='apple ']",   ctx: "#attr-ends", expect: ["attr-ends-p1"],                     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute ends with selector with double-quoted value, matching class attribute ending with specified substring",    selector: "[class$=\"apple \"]", ctx: "#attr-ends", expect: ["attr-ends-p1"],                     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute ends with selector with unquoted value, not matching class attribute not ending with specified substring", selector: "[class$=apple ]",     ctx: "#attr-ends", expect: [] /*no matches*/,                    level: 3, testType: TEST_FIND},
+
+  // - substring contains        [att*=val] (Level 3)
+  {name: "Attribute contains selector, matching href attributes beginning with specified substring",                          selector: "a[href*=\"http://www\"]",     ctx: "#attr-contains", expect: ["attr-contains-a1", "attr-contains-a3"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector, matching href attributes ending with specified substring",                             selector: "a[href*=\".org\"]",           ctx: "#attr-contains", expect: ["attr-contains-a1", "attr-contains-a2"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector, matching href attributes containing specified substring",                              selector: "a[href*=\".example.\"]",      ctx: "#attr-contains", expect: ["attr-contains-a1", "attr-contains-a3"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector, matching lang attributes beginning with specified substring, ",                        selector: "[lang*=\"en-\"]",             ctx: "#attr-contains", expect: ["attr-contains-div2", "attr-contains-div6"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector, matching lang attributes ending with specified substring, ",                           selector: "[lang*=\"-CH\"]",             ctx: "#attr-contains", expect: ["attr-contains-div3", "attr-contains-div5"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute beginning with specified substring", selector: "[class*=' apple']",           ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute ending with specified substring",    selector: "[class*='orange ']",          ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute containing specified substring",     selector: "[class*='ple banana ora']",   ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute beginning with specified substring", selector: "[class*=\" apple\"]",         ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute ending with specified substring",    selector: "[class*=\"orange \"]",        ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute containing specified substring",     selector: "[class*=\"ple banana ora\"]", ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute beginning with specified substring",      selector: "[class*= apple]",             ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute ending with specified substring",         selector: "[class*=orange ]",            ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute containing specified substring",          selector: "[class*= banana ]",           ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // Pseudo-classes
+  // - :root                 (Level 3)
+  {name: ":root pseudo-class selector, matching document root element",      selector: ":root",               expect: ["html"],          exclude: ["element", "fragment", "detached"], level: 3, testType: TEST_FIND},
+  {name: ":root pseudo-class selector, not matching document root element",  selector: ":root",               expect: [] /*no matches*/, exclude: ["document"],                        level: 3, testType: TEST_FIND},
+  {name: ":root pseudo-class selector, not matching document root element",  selector: ":root", ctx: "#html", expect: [] /*no matches*/, exclude: ["fragment", "detached"],            level: 3, testType: TEST_FIND},
+
+  // - :nth-child(n)         (Level 3)
+  {name: ":nth-child selector, matching the third child element",                              selector: ":nth-child(3)",      ctx: "#pseudo-nth-table1", expect: ["pseudo-nth-td3", "pseudo-nth-td9", "pseudo-nth-tr3", "pseudo-nth-td15"],             level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-child selector, matching every third child element",                            selector: "li:nth-child(3n)",   ctx: "#pseudo-nth", expect: ["pseudo-nth-li3", "pseudo-nth-li6", "pseudo-nth-li9", "pseudo-nth-li12"],                    level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-child selector, matching every second child element, starting from the fourth", selector: "li:nth-child(2n+4)", ctx: "#pseudo-nth", expect: ["pseudo-nth-li4", "pseudo-nth-li6", "pseudo-nth-li8", "pseudo-nth-li10", "pseudo-nth-li12"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-child selector, matching every fourth child element, starting from the third",  selector: ":nth-child(4n-1)",   ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-em2", "pseudo-nth-span3"],                                                    level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :nth-last-child       (Level 3)
+  {name: ":nth-last-child selector, matching the third last child element",                                           selector: ":nth-last-child(3)",      ctx: "#pseudo-nth-table1", expect: ["pseudo-nth-tr1", "pseudo-nth-td4", "pseudo-nth-td10", "pseudo-nth-td16"],         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every third child element from the end",                                 selector: "li:nth-last-child(3n)",   ctx: "pseudo-nth", expect: ["pseudo-nth-li1", "pseudo-nth-li4", "pseudo-nth-li7", "pseudo-nth-li10"],                  level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every second child element from the end, starting from the fourth last", selector: "li:nth-last-child(2n+4)", ctx: "pseudo-nth", expect: ["pseudo-nth-li1", "pseudo-nth-li3", "pseudo-nth-li5", "pseudo-nth-li7", "pseudo-nth-li9"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every fourth element from the end, starting from the third last",        selector: ":nth-last-child(4n-1)",   ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-span2", "pseudo-nth-span4"],                                               level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :nth-of-type(n)       (Level 3)
+  {name: ":nth-of-type selector, matching the third em element",                                        selector: "em:nth-of-type(3)",      ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-em3"],                                                                                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-of-type selector, matching every second element of their type",                          selector: ":nth-of-type(2n)",       ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-em2", "pseudo-nth-span2", "pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-of-type selector, matching every second elemetn of their type, starting from the first", selector: "span:nth-of-type(2n-1)", ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-span1", "pseudo-nth-span3"],                                                           level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :nth-last-of-type(n)  (Level 3)
+  {name: ":nth-last-of-type selector, matching the thrid last em element",                                       selector: "em:nth-last-of-type(3)",      ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-em2"],                                                                                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-of-type selector, matching every second last element of their type",                         selector: ":nth-last-of-type(2n)",       ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1", "pseudo-nth-em3", "pseudo-nth-span3"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-of-type selector, matching every second last element of their type, starting from the last", selector: "span:nth-last-of-type(2n-1)", ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-span2", "pseudo-nth-span4"],                                                           level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :first-of-type        (Level 3)
+  {name: ":first-of-type selector, matching the first em element",                   selector: "em:first-of-type",  ctx: "#pseudo-nth-p1",     expect: ["pseudo-nth-em1"],                                           level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":first-of-type selector, matching the first of every type of element",     selector: ":first-of-type",    ctx: "#pseudo-nth-p1",     expect: ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":first-of-type selector, matching the first td element in each table row", selector: "tr :first-of-type", ctx: "#pseudo-nth-table1", expect: ["pseudo-nth-td1", "pseudo-nth-td7", "pseudo-nth-td13"],      level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :last-of-type         (Level 3)
+  {name: ":last-of-type selector, matching the last em elemnet",                     selector: "em:last-of-type",   ctx: "#pseudo-nth-p1",     expect: ["pseudo-nth-em4"],                                           level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":last-of-type selector, matching the last of every type of element",       selector: ":last-of-type",     ctx: "#pseudo-nth-p1",     expect: ["pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":last-of-type selector, matching the last td element in each table row",   selector: "tr :last-of-type",  ctx: "#pseudo-nth-table1", expect: ["pseudo-nth-td6", "pseudo-nth-td12", "pseudo-nth-td18"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :first-child
+  {name: ":first-child pseudo-class selector, matching first child div element",          selector: "div:first-child",                                                            ctx: "#pseudo-first-child", expect: ["pseudo-first-child-div1"],                                                          level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: ":first-child pseudo-class selector, doesn't match non-first-child elements",    selector: ".pseudo-first-child-div2:first-child, .pseudo-first-child-div3:first-child", ctx: "#pseudo-first-child", expect: [] /*no matches*/,                                                                    level: 2, testType: TEST_FIND},
+  {name: ":first-child pseudo-class selector, matching first-child of multiple elements", selector: "span:first-child",                                                           ctx: "#pseudo-first-child", expect: ["pseudo-first-child-span1", "pseudo-first-child-span3", "pseudo-first-child-span5"], level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - :last-child           (Level 3)
+  {name: ":last-child pseudo-class selector, matching last child div element",           selector: "div:last-child",                                                          ctx: "#pseudo-last-child", expect: ["pseudo-last-child-div3"],                                                        level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":last-child pseudo-class selector, doesn't match non-last-child elements",     selector: ".pseudo-last-child-div1:last-child, .pseudo-last-child-div2:first-child", ctx: "#pseudo-last-child", expect: [] /*no matches*/,                                                                 level: 3, testType: TEST_FIND},
+  {name: ":last-child pseudo-class selector, matching first-child of multiple elements", selector: "span:last-child",                                                         ctx: "#pseudo-last-child", expect: ["pseudo-last-child-span2", "pseudo-last-child-span4", "pseudo-last-child-span6"], level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :only-child           (Level 3)
+  {name: ":pseudo-only-child pseudo-class selector, matching all only-child elements", selector: ":only-child",   ctx: "#pseudo-only", expect: ["pseudo-only-span1"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":pseudo-only-child pseudo-class selector, matching only-child em elements",  selector: "em:only-child", ctx: "#pseudo-only", expect: [] /*no matches*/,     level: 3, testType: TEST_FIND},
+
+  // - :only-of-type         (Level 3)
+  {name: ":pseudo-only-of-type pseudo-class selector, matching all elements with no siblings of the same type", selector: " :only-of-type",   ctx: "#pseudo-only", expect: ["pseudo-only-span1", "pseudo-only-em1"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":pseudo-only-of-type pseudo-class selector, matching em elements with no siblings of the same type",  selector: " em:only-of-type", ctx: "#pseudo-only", expect: ["pseudo-only-em1"],                    level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :empty                (Level 3)
+  {name: ":empty pseudo-class selector, matching empty p elements",   selector: "p:empty", ctx: "#pseudo-empty", expect: ["pseudo-empty-p1", "pseudo-empty-p2"],                       level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":empty pseudo-class selector, matching all empty elements", selector: ":empty",  ctx: "#pseudo-empty", expect: ["pseudo-empty-p1", "pseudo-empty-p2", "pseudo-empty-span1"], level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :link and :visited
+  // Implementations may treat all visited links as unvisited, so these cannot be tested separately.
+  // The only guarantee is that ":link,:visited" matches the set of all visited and unvisited links and that they are individually mutually exclusive sets.
+  {name: ":link and :visited pseudo-class selectors, matching a and area elements with href attributes",        selector: " :link, #pseudo-link :visited", ctx: "#pseudo-link", expect: ["pseudo-link-a1", "pseudo-link-a2", "pseudo-link-area1"],                                level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: ":link and :visited pseudo-class selectors, matching link elements with href attributes",              selector: " :link, #head :visited",        ctx: "#head",        expect: ["pseudo-link-link1", "pseudo-link-link2"], exclude: ["element", "fragment", "detached"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: ":link and :visited pseudo-class selectors, not matching link elements with href attributes",          selector: " :link, #head :visited",        ctx: "#head",        expect: [] /*no matches*/,                          exclude: ["document"],                        level: 1, testType: TEST_FIND},
+  {name: ":link and :visited pseudo-class selectors, chained, mutually exclusive pseudo-classes match nothing", selector: ":link:visited",                 ctx: "#html",        expect: [] /*no matches*/,                          exclude: ["document"],                        level: 1, testType: TEST_FIND},
+
+// XXX Figure out context or refNodes for this
+  // - :target               (Level 3)
+  {name: ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", selector: ":target", ctx: "", expect: [] /*no matches*/, exclude: ["document", "element"],  level: 3, testType: TEST_FIND},
+  {name: ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", selector: ":target", ctx: "", expect: ["target"],        exclude: ["fragment", "detached"], level: 3, testType: TEST_FIND},
+
+// XXX Fix ctx in tests below
+
+  // - :lang()
+  {name: ":lang pseudo-class selector, matching inherited language (1)",                     selector: "#pseudo-lang-div1:lang(en)",    ctx: "", expect: ["pseudo-lang-div1"], exclude: ["detached", "fragment"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: ":lang pseudo-class selector, not matching element with no inherited language", selector: "#pseudo-lang-div1:lang(en)",    ctx: "", expect: [] /*no matches*/,    exclude: ["document", "element"],  level: 2, testType: TEST_FIND},
+  {name: ":lang pseudo-class selector, matching specified language with exact value (1)",    selector: "#pseudo-lang-div2:lang(fr)",    ctx: "", expect: ["pseudo-lang-div2"],                                    level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: ":lang pseudo-class selector, matching specified language with partial value (1)",  selector: "#pseudo-lang-div3:lang(en)",    ctx: "", expect: ["pseudo-lang-div3"],                                    level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: ":lang pseudo-class selector, not matching incorrect language",                 selector: "#pseudo-lang-div4:lang(es-AR)", ctx: "", expect: [] /*no matches*/,                                       level: 2, testType: TEST_FIND},
+
+  // - :enabled              (Level 3)
+  {name: ":enabled pseudo-class selector, matching all enabled form controls (1)",  selector: "#pseudo-ui :enabled",  ctx: "", expect: ["pseudo-ui-input1", "pseudo-ui-input2", "pseudo-ui-input3", "pseudo-ui-input4", "pseudo-ui-input5", "pseudo-ui-input6",
+                                                                                                                           "pseudo-ui-input7", "pseudo-ui-input8", "pseudo-ui-input9", "pseudo-ui-textarea1", "pseudo-ui-button1"],    level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :disabled             (Level 3)
+  {name: ":enabled pseudo-class selector, matching all disabled form controls (1)", selector: "#pseudo-ui :disabled", ctx: "", expect: ["pseudo-ui-input10", "pseudo-ui-input11", "pseudo-ui-input12", "pseudo-ui-input13", "pseudo-ui-input14", "pseudo-ui-input15",
+                                                                                                                           "pseudo-ui-input16", "pseudo-ui-input17", "pseudo-ui-input18", "pseudo-ui-textarea2", "pseudo-ui-button2"], level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :checked              (Level 3)
+  {name: ":checked pseudo-class selector, matching checked radio buttons and checkboxes (1)", selector: "#pseudo-ui :checked", ctx: "", expect: ["pseudo-ui-input4", "pseudo-ui-input6", "pseudo-ui-input13", "pseudo-ui-input15"],  level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :not(s)               (Level 3)
+  {name: ":not pseudo-class selector, matching (1)", selector: "#not>:not(div)",   ctx: "", expect: ["not-p1", "not-p2", "not-p3"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":not pseudo-class selector, matching (1)", selector: "#not * :not(:first-child)",   ctx: "", expect: ["not-em1", "not-em2", "not-em3"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":not pseudo-class selector, matching nothing", selector: ":not(*)",   ctx: "", expect: [] /* no matches */, level: 3, testType: TEST_FIND},
+  {name: ":not pseudo-class selector, matching nothing", selector: ":not(*|*)", ctx: "", expect: [] /* no matches */, level: 3, testType: TEST_FIND},
+
+  // Pseudo-elements
+  // - ::first-line
+  {name: ":first-line pseudo-element (one-colon syntax) selector, not matching any elements",    selector: "#pseudo-element:first-line",    ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "::first-line pseudo-element (two-colon syntax) selector, not matching any elements",   selector: "#pseudo-element::first-line",   ctx: "", expect: [] /*no matches*/, level: 3, testType: TEST_FIND},
+
+  // - ::first-letter
+  {name: ":first-letter pseudo-element (one-colon syntax) selector, not matching any elements",  selector: "#pseudo-element:first-letter",  ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "::first-letter pseudo-element (two-colon syntax) selector, not matching any elements", selector: "#pseudo-element::first-letter", ctx: "", expect: [] /*no matches*/, level: 3, testType: TEST_FIND},
+
+  // - ::before
+  {name: ":before pseudo-element (one-colon syntax) selector, not matching any elements",        selector: "#pseudo-element:before",        ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "::before pseudo-element (two-colon syntax) selector, not matching any elements",       selector: "#pseudo-element::before",       ctx: "", expect: [] /*no matches*/, level: 3, testType: TEST_FIND},
+
+  // - ::after
+  {name: ":after pseudo-element (one-colon syntax) selector, not matching any elements",         selector: "#pseudo-element:after",         ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "::after pseudo-element (two-colon syntax) selector, not matching any elements",        selector: "#pseudo-element::after",        ctx: "", expect: [] /*no matches*/, level: 3, testType: TEST_FIND},
+
+  // Class Selectors
+  {name: "Class selector, matching element with specified class (1)",                                           selector: ".class-p",                ctx: "", expect: ["class-p1","class-p2", "class-p3"],                                              level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, chained, matching only elements with all specified classes (1)",                      selector: "#class .apple.orange.banana",    ctx: "", expect: ["class-div1", "class-div2", "class-p4", "class-div3", "class-p6", "class-div4"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class Selector, chained, with type selector (1)",                                                     selector: "div.apple.banana.orange", ctx: "", expect: ["class-div1", "class-div2", "class-div3", "class-div4"],                         level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, matching element with class value using non-ASCII characters (2)",                    selector: ".\u53F0\u5317Ta\u0301ibe\u030Ci",             ctx: "", expect: ["class-span1"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, matching multiple elements with class value using non-ASCII characters (1)",          selector: ".\u53F0\u5317",                     ctx: "", expect: ["class-span1","class-span2"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, chained, matching element with multiple class values using non-ASCII characters (2)", selector: ".\u53F0\u5317Ta\u0301ibe\u030Ci.\u53F0\u5317",          ctx: "", expect: ["class-span1"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, matching element with class with escaped character (1)",                              selector: ".foo\\:bar",              ctx: "", expect: ["class-span3"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, matching element with class with escaped character (1)",                              selector: ".test\\.foo\\[5\\]bar",   ctx: "", expect: ["class-span4"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  // ID Selectors
+  {name: "ID selector, matching element with specified id (1)",           selector: "#id #id-div1",              ctx: "", expect: ["id-div1"],            level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, chained, matching element with specified id (1)",  selector: "#id-div1, #id-div1",        ctx: "", expect: ["id-div1"],            level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, chained, matching element with specified id (1)",  selector: "#id-div1, #id-div2",        ctx: "", expect: ["id-div1", "id-div2"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID Selector, chained, with type selector (1)",                  selector: "div#id-div1, div#id-div2",  ctx: "", expect: ["id-div1", "id-div2"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, not matching non-existent descendant",         selector: "#id #none",                 ctx: "", expect: [] /*no matches*/,      level: 1, testType: TEST_FIND},
+  {name: "ID selector, not matching non-existent ancestor",           selector: "#none #id-div1",            ctx: "", expect: [] /*no matches*/,      level: 1, testType: TEST_FIND},
+  {name: "ID selector, matching multiple elements with duplicate id (1)", selector: "#id-li-duplicate",          ctx: "", expect: ["id-li-duplicate", "id-li-duplicate", "id-li-duplicate", "id-li-duplicate"], level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  {name: "ID selector, matching id value using non-ASCII characters (3)",    selector: "#\u53F0\u5317Ta\u0301ibe\u030Ci",           ctx: "", expect: ["\u53F0\u5317Ta\u0301ibe\u030Ci"],       level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, matching id value using non-ASCII characters (4)",    selector: "#\u53F0\u5317",                   ctx: "", expect: ["\u53F0\u5317"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, matching id values using non-ASCII characters (2)",   selector: "#\u53F0\u5317Ta\u0301ibe\u030Ci, #\u53F0\u5317",      ctx: "", expect: ["\u53F0\u5317Ta\u0301ibe\u030Ci", "\u53F0\u5317"], level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  // XXX runMatchesTest() in level2-lib.js can't handle this because obtaining the expected nodes requires escaping characters when generating the selector from 'expect' values
+  {name: "ID selector, matching element with id with escaped character", selector: "#\\#foo\\:bar",         ctx: "", expect: ["#foo:bar"],         level: 1, testType: TEST_FIND},
+  {name: "ID selector, matching element with id with escaped character", selector: "#test\\.foo\\[5\\]bar", ctx: "", expect: ["test.foo[5]bar"],   level: 1, testType: TEST_FIND},
+
+  // Namespaces
+  // XXX runMatchesTest() in level2-lib.js can't handle these because non-HTML elements don't have a recognised id
+  {name: "Namespace selector, matching element with any namespace",        selector: "#any-namespace *|div", ctx: "", expect: ["any-namespace-div1", "any-namespace-div2", "any-namespace-div3", "any-namespace-div4"], level: 3, testType: TEST_FIND},
+  {name: "Namespace selector, matching div elements in no namespace only", selector: "#no-namespace |div",   ctx: "", expect: ["no-namespace-div3"], level: 3, testType: TEST_FIND},
+  {name: "Namespace selector, matching any elements in no namespace only", selector: "#no-namespace |*",     ctx: "", expect: ["no-namespace-div3"], level: 3, testType: TEST_FIND},
+
+  // Combinators
+  // - Descendant combinator ' '
+  {name: "Descendant combinator, matching element that is a descendant of an element with id (1)",                 selector: "#descendant div",                   ctx: "", expect: ["descendant-div1", "descendant-div2", "descendant-div3", "descendant-div4"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element (1)",                 selector: "body #descendant-div1",             ctx: "", expect: ["descendant-div1"], exclude: ["detached", "fragment"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element (1)",                 selector: "div #descendant-div1",              ctx: "", expect: ["descendant-div1"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element with id (1)",         selector: "#descendant #descendant-div2",      ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with class that is a descendant of an element with id (1)",      selector: "#descendant .descendant-div2",      ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with class that is a descendant of an element with class (1)",   selector: ".descendant-div1 .descendant-div3", ctx: "", expect: ["descendant-div3"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, not matching element with id that is not a descendant of an element with id", selector: "#descendant-div1 #descendant-div4", ctx: "", expect: [] /*no matches*/,                                      level: 1, testType: TEST_FIND},
+  {name: "Descendant combinator, whitespace characters (1)",                                                       selector: "#descendant\t\r\n#descendant-div2", ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  // - Descendant combinator '>>'
+  {name: "Descendant combinator '>>', matching element that is a descendant of an element with id (1)",                 selector: "#descendant>>div",                   ctx: "", expect: ["descendant-div1", "descendant-div2", "descendant-div3", "descendant-div4"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator '>>', matching element with id that is a descendant of an element (1)",                 selector: "body>>#descendant-div1",             ctx: "", expect: ["descendant-div1"], exclude: ["detached", "fragment"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator '>>', matching element with id that is a descendant of an element (1)",                 selector: "div>>#descendant-div1",              ctx: "", expect: ["descendant-div1"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator '>>', matching element with id that is a descendant of an element with id (1)",         selector: "#descendant>>#descendant-div2",      ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator '>>', matching element with class that is a descendant of an element with id (1)",      selector: "#descendant>>.descendant-div2",      ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, '>>', matching element with class that is a descendant of an element with class (1)",   selector: ".descendant-div1>>.descendant-div3", ctx: "", expect: ["descendant-div3"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator '>>', not matching element with id that is not a descendant of an element with id", selector: "#descendant-div1>>#descendant-div4", ctx: "", expect: [] /*no matches*/,                                      level: 1, testType: TEST_FIND},
+
+  // - Child combinator '>'
+  {name: "Child combinator, matching element that is a child of an element with id (1)",                       selector: "#child>div",                          ctx: "", expect: ["child-div1", "child-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element (1)",                       selector: "div>#child-div1",                     ctx: "", expect: ["child-div1"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element with id (1)",               selector: "#child>#child-div1",                  ctx: "", expect: ["child-div1"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element with class (1)",            selector: "#child-div1>.child-div2",             ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, matching element with class that is a child of an element with class (1)",         selector: ".child-div1>.child-div2",             ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, not matching element with id that is not a child of an element with id",       selector: "#child>#child-div3",                  ctx: "", expect: [] /*no matches*/,            level: 2, testType: TEST_FIND},
+  {name: "Child combinator, not matching element with id that is not a child of an element with class",    selector: "#child-div1>.child-div3",             ctx: "", expect: [] /*no matches*/,            level: 2, testType: TEST_FIND},
+  {name: "Child combinator, not matching element with class that is not a child of an element with class", selector: ".child-div1>.child-div3",             ctx: "", expect: [] /*no matches*/,            level: 2, testType: TEST_FIND},
+  {name: "Child combinator, surrounded by whitespace (1)",                                                     selector: "#child-div1\t\r\n>\t\r\n#child-div2", ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, whitespace after (1)",                                                             selector: "#child-div1>\t\r\n#child-div2",       ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, whitespace before (1)",                                                            selector: "#child-div1\t\r\n>#child-div2",       ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, no whitespace (1)",                                                                selector: "#child-div1>#child-div2",             ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - Adjacent sibling combinator '+'
+  {name: "Adjacent sibling combinator, matching element that is an adjacent sibling of an element with id (1)",                 selector: "#adjacent-div2+div",                                         ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element (1)",                 selector: "div+#adjacent-div4",                                         ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element with id (1)",         selector: "#adjacent-div2+#adjacent-div4",                              ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with id (1)",      selector: "#adjacent-div2+.adjacent-div4",                              ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with class (1)",   selector: ".adjacent-div2+.adjacent-div4",                              ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching p element that is an adjacent sibling of a div element (1)",                    selector: "#adjacent div+p",                                            ctx: "", expect: ["adjacent-p2"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, not matching element with id that is not an adjacent sibling of an element with id", selector: "#adjacent-div2+#adjacent-p2, #adjacent-div2+#adjacent-div1", ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "Adjacent sibling combinator, surrounded by whitespace (1)",                                                           selector: "#adjacent-p2\t\r\n+\t\r\n#adjacent-p3",                      ctx: "", expect: ["adjacent-p3"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, whitespace after (1)",                                                                   selector: "#adjacent-p2+\t\r\n#adjacent-p3",                            ctx: "", expect: ["adjacent-p3"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, whitespace before (1)",                                                                  selector: "#adjacent-p2\t\r\n+#adjacent-p3",                            ctx: "", expect: ["adjacent-p3"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, no whitespace (1)",                                                                      selector: "#adjacent-p2+#adjacent-p3",                                  ctx: "", expect: ["adjacent-p3"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - General sibling combinator ~ (Level 3)
+  {name: "General sibling combinator, matching element that is a sibling of an element with id (1)",                    selector: "#sibling-div2~div",                                        ctx: "", expect: ["sibling-div4", "sibling-div6"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, matching element with id that is a sibling of an element (1)",                    selector: "div~#sibling-div4",                                        ctx: "", expect: ["sibling-div4"],                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, matching element with id that is a sibling of an element with id (1)",            selector: "#sibling-div2~#sibling-div4",                              ctx: "", expect: ["sibling-div4"],                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, matching element with class that is a sibling of an element with id (1)",         selector: "#sibling-div2~.sibling-div",                               ctx: "", expect: ["sibling-div4", "sibling-div6"],                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, matching p element that is a sibling of a div element (1)",                       selector: "#sibling div~p",                                           ctx: "", expect: ["sibling-p2", "sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, not matching element with id that is not a sibling after a p element (1)",        selector: "#sibling>p~div",                                           ctx: "", expect: [] /*no matches*/,                level: 3, testType: TEST_FIND},
+  {name: "General sibling combinator, not matching element with id that is not a sibling after an element with id", selector: "#sibling-div2~#sibling-div3, #sibling-div2~#sibling-div1", ctx: "", expect: [] /*no matches*/,                level: 3, testType: TEST_FIND},
+  {name: "General sibling combinator, surrounded by whitespace (1)",                                                    selector: "#sibling-p2\t\r\n~\t\r\n#sibling-p3",                      ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, whitespace after (1)",                                                            selector: "#sibling-p2~\t\r\n#sibling-p3",                            ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, whitespace before (1)",                                                           selector: "#sibling-p2\t\r\n~#sibling-p3",                            ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, no whitespace (1)",                                                               selector: "#sibling-p2~#sibling-p3",                                  ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // Group of selectors (comma)
+  {name: "Syntax, group of selectors separator, surrounded by whitespace (1)", selector: "#group em\t\r \n,\t\r \n#group strong", ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, whitespace after (1)",         selector: "#group em,\t\r\n#group strong",         ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, whitespace before (1)",        selector: "#group em\t\r\n,#group strong",         ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, no whitespace (1)",            selector: "#group em,#group strong",               ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
+];
author	Matt A. Tobin <mattatobin@localhost.localdomain>	2018-02-02 04:16:08 -0500
committer	Matt A. Tobin <mattatobin@localhost.localdomain>	2018-02-02 04:16:08 -0500
commit	5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree	10027f336435511475e392454359edea8e25895d /testing/web-platform/tests/dom/nodes
parent	49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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