1 files changed, 33 insertions, 0 deletions
diff --git a/testing/web-platform/tests/domparsing/insert_adjacent_html.js b/testing/web-platform/tests/domparsing/insert_adjacent_html.js
new file mode 100644
index 000000000..2451228d1
--- /dev/null
+++ b/testing/web-platform/tests/domparsing/insert_adjacent_html.js
@@ -0,0 +1,33 @@
+function testThrowingNoParent(element, desc) {
+  test(function() {
+    assert_throws("NO_MODIFICATION_ALLOWED_ERR",
+      function() { element.insertAdjacentHTML("afterend", "") }
+    );
+    assert_throws("NO_MODIFICATION_ALLOWED_ERR",
+      function() { element.insertAdjacentHTML("beforebegin", "") }
+    );
+    assert_throws("NO_MODIFICATION_ALLOWED_ERR",
+      function() { element.insertAdjacentHTML("afterend", "foo") }
+    );
+    assert_throws("NO_MODIFICATION_ALLOWED_ERR",
+      function() { element.insertAdjacentHTML("beforebegin", "foo") }
+    );
+  }, "When the parent node is " + desc + ", insertAdjacentHTML should throw for beforebegin and afterend (text)");
+  test(function() {
+    assert_throws("NO_MODIFICATION_ALLOWED_ERR",
+      function() { element.insertAdjacentHTML("afterend", "<!-- fail -->") }
+    );
+    assert_throws("NO_MODIFICATION_ALLOWED_ERR",
+      function() { element.insertAdjacentHTML("beforebegin", "<!-- fail -->") }
+    );
+  }, "When the parent node is " + desc + ", insertAdjacentHTML should throw for beforebegin and afterend (comments)");
+  test(function() {
+    assert_throws("NO_MODIFICATION_ALLOWED_ERR",
+      function() { element.insertAdjacentHTML("afterend", "<div></div>") }
+    );
+    assert_throws("NO_MODIFICATION_ALLOWED_ERR",
+      function() { element.insertAdjacentHTML("beforebegin", "<div></div>") }
+    );
+  }, "When the parent node is " + desc + ", insertAdjacentHTML should throw for beforebegin and afterend (elements)");
+}
+