Import wpt@40665266227e475bc4a56884247d8c09d78dfb6a

third_party/WebKit/LayoutTests/external/wpt/selection/collapse.js

+"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]));
+}
+
+// Run a subset of all of collapse tests.
+// Huge number of tests in a single file causes problems. Each of
+// collapse-NN.html runs a part of them.
+//
+// startIndex - Start index in testRanges array
+// optionalEndIndex - End index in testRanges array + 1. If this argument is
+//     omitted, testRanges.length is applied.
+function testCollapseSubSet(startIndex, optionalEndIndex) {
+    var endIndex = optionalEndIndex === undefined ? testRanges.length : optionalEndIndex;
+    if (startIndex < 0 || startIndex >= testRanges.length)
+        throw "Sanity check: Specified index is invalid.";
+    if (endIndex < 0 || endIndex > testRanges.length)
+        throw "Sanity check: Specified index is invalid.";
+
+    var tests = [];
+    for (var i = startIndex; i < endIndex; 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);
+}
+