1 files changed, 88 insertions, 0 deletions
diff --git a/testing/web-platform/tests/selection/collapse.html b/testing/web-platform/tests/selection/collapse.html
new file mode 100644
index 000000000..530158a05
--- /dev/null
+++ b/testing/web-platform/tests/selection/collapse.html
@@ -0,0 +1,88 @@
+<!doctype html>
+<title>Selection.collapse() tests</title>
+<meta name=timeout content=long>
+<div id=log></div>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=common.js></script>
+<script>
+"use strict";
+
+function testCollapse(range, point) {
+    selection.removeAllRanges();
+    var addedRange;
+    if (range) {
+        addedRange = range.cloneRange();
+        selection.addRange(addedRange);
+    }
+
+    if (point[0].nodeType == Node.DOCUMENT_TYPE_NODE) {
+        assert_throws("INVALID_NODE_TYPE_ERR", function() {
+            selection.collapse(point[0], point[1]);
+        }, "Must throw INVALID_NODE_TYPE_ERR when collapse()ing if the node is a DocumentType");
+        return;
+    }
+
+    if (point[1] < 0 || point[1] > getNodeLength(point[0])) {
+        assert_throws("INDEX_SIZE_ERR", function() {
+            selection.collapse(point[0], point[1]);
+        }, "Must throw INDEX_SIZE_ERR when collapse()ing if the offset is negative or greater than the node's length");
+        return;
+    }
+
+    selection.collapse(point[0], point[1]);
+
+    assert_equals(selection.rangeCount, 1,
+        "selection.rangeCount must equal 1 after collapse()");
+    assert_equals(selection.focusNode, point[0],
+        "focusNode must equal the node we collapse()d to");
+    assert_equals(selection.focusOffset, point[1],
+        "focusOffset must equal the offset we collapse()d to");
+    assert_equals(selection.focusNode, selection.anchorNode,
+        "focusNode and anchorNode must be equal after collapse()");
+    assert_equals(selection.focusOffset, selection.anchorOffset,
+        "focusOffset and anchorOffset must be equal after collapse()");
+    if (range) {
+        assert_equals(addedRange.startContainer, range.startContainer,
+            "collapse() must not change the startContainer of a preexisting Range");
+        assert_equals(addedRange.endContainer, range.endContainer,
+            "collapse() must not change the endContainer of a preexisting Range");
+        assert_equals(addedRange.startOffset, range.startOffset,
+            "collapse() must not change the startOffset of a preexisting Range");
+        assert_equals(addedRange.endOffset, range.endOffset,
+            "collapse() must not change the endOffset of a preexisting Range");
+    }
+}
+
+// Also test a selection with no ranges
+testRanges.unshift("[]");
+
+// Don't want to eval() each point a bazillion times
+var testPointsCached = [];
+for (var i = 0; i < testPoints.length; i++) {
+    testPointsCached.push(eval(testPoints[i]));
+}
+
+var tests = [];
+for (var i = 0; i < testRanges.length; i++) {
+    var endpoints = eval(testRanges[i]);
+    var range;
+    test(function() {
+        if (endpoints.length) {
+            range = ownerDocument(endpoints[0]).createRange();
+            range.setStart(endpoints[0], endpoints[1]);
+            range.setEnd(endpoints[2], endpoints[3]);
+        } else {
+            // Empty selection
+            range = null;
+        }
+    }, "Set up range " + i + " " + testRanges[i]);
+    for (var j = 0; j < testPoints.length; j++) {
+        tests.push(["Range " + i + " " + testRanges[i] + ", point " + j + " " + testPoints[j], range, testPointsCached[j]]);
+    }
+}
+
+generate_tests(testCollapse, tests);
+
+testDiv.style.display = "none";
+</script>