1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/imptests/editing/selecttest/test_extend.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,148 @@
1.4 +<!doctype html>
1.5 +<title>Selection extend() tests</title>
1.6 +<meta charset=utf-8>
1.7 +<body>
1.8 +<script src=/resources/testharness.js></script>
1.9 +<script src=/resources/testharnessreport.js></script>
1.10 +<script src=common.js></script>
1.11 +<div id=log></div>
1.12 +<script>
1.13 +"use strict";
1.14 +
1.15 +// Also test a selection with no ranges
1.16 +testRanges.unshift("[]");
1.17 +
1.18 +/**
1.19 + * We test Selections that go both forwards and backwards here. In the latter
1.20 + * case we need to use extend() to force it to go backwards, which is fair
1.21 + * enough, since that's what we're testing. We test collapsed selections only
1.22 + * once.
1.23 + */
1.24 +for (var i = 0; i < testRanges.length; i++) {
1.25 + var endpoints = eval(testRanges[i]);
1.26 + for (var j = 0; j < testPoints.length; j++) {
1.27 + if (endpoints[0] == endpoints[2]
1.28 + && endpoints[1] == endpoints[3]) {
1.29 + // Test collapsed selections only once
1.30 + test(function() {
1.31 + setSelectionForwards(endpoints);
1.32 + testExtend(endpoints, eval(testPoints[j]));
1.33 + }, "extend() with range " + i + " " + testRanges[i]
1.34 + + " and point " + j + " " + testPoints[j]);
1.35 + } else {
1.36 + test(function() {
1.37 + setSelectionForwards(endpoints);
1.38 + testExtend(endpoints, eval(testPoints[j]));
1.39 + }, "extend() forwards with range " + i + " " + testRanges[i]
1.40 + + " and point " + j + " " + testPoints[j]);
1.41 +
1.42 + test(function() {
1.43 + setSelectionBackwards(endpoints);
1.44 + testExtend(endpoints, eval(testPoints[j]));
1.45 + }, "extend() backwards with range " + i + " " + testRanges[i]
1.46 + + " and point " + j + " " + testPoints[j]);
1.47 + }
1.48 + }
1.49 +}
1.50 +
1.51 +function testExtend(endpoints, target) {
1.52 + assert_equals(getSelection().rangeCount, endpoints.length/4,
1.53 + "Sanity check: rangeCount must be correct");
1.54 +
1.55 + var node = target[0];
1.56 + var offset = target[1];
1.57 +
1.58 + // "If the context object's range is null, throw an InvalidStateError
1.59 + // exception and abort these steps."
1.60 + if (getSelection().rangeCount == 0) {
1.61 + assert_throws("INVALID_STATE_ERR", function() {
1.62 + selection.extend(node, offset);
1.63 + }, "extend() when rangeCount is 0 must throw InvalidStateError");
1.64 + return;
1.65 + }
1.66 +
1.67 + assert_equals(getSelection().getRangeAt(0).startContainer, endpoints[0],
1.68 + "Sanity check: startContainer must be correct");
1.69 + assert_equals(getSelection().getRangeAt(0).startOffset, endpoints[1],
1.70 + "Sanity check: startOffset must be correct");
1.71 + assert_equals(getSelection().getRangeAt(0).endContainer, endpoints[2],
1.72 + "Sanity check: endContainer must be correct");
1.73 + assert_equals(getSelection().getRangeAt(0).endOffset, endpoints[3],
1.74 + "Sanity check: endOffset must be correct");
1.75 +
1.76 + // "Let anchor and focus be the context object's anchor and focus, and let
1.77 + // new focus be the boundary point (node, offset)."
1.78 + var anchorNode = getSelection().anchorNode;
1.79 + var anchorOffset = getSelection().anchorOffset;
1.80 + var focusNode = getSelection().focusNode;
1.81 + var focusOffset = getSelection().focusOffset;
1.82 +
1.83 + // "Let new range be a new range."
1.84 + //
1.85 + // We'll always be setting either new range's start or its end to new
1.86 + // focus, so we'll always throw at some point. Test that now.
1.87 + //
1.88 + // From DOM4's "set the start or end of a range": "If node is a doctype,
1.89 + // throw an "InvalidNodeTypeError" exception and terminate these steps."
1.90 + if (node.nodeType == Node.DOCUMENT_TYPE_NODE) {
1.91 + assert_throws("INVALID_NODE_TYPE_ERR", function() {
1.92 + selection.extend(node, offset);
1.93 + }, "extend() to a doctype must throw InvalidNodeTypeError");
1.94 + return;
1.95 + }
1.96 +
1.97 + // From DOM4's "set the start or end of a range": "If offset is greater
1.98 + // than node's length, throw an "IndexSizeError" exception and terminate
1.99 + // these steps."
1.100 + //
1.101 + // FIXME: We should be casting offset to an unsigned int per WebIDL. Until
1.102 + // we do, we need the offset < 0 check too.
1.103 + if (offset < 0 || offset > getNodeLength(node)) {
1.104 + assert_throws("INDEX_SIZE_ERR", function() {
1.105 + selection.extend(node, offset);
1.106 + }, "extend() to an offset that's greater than node length (" + getNodeLength(node) + ") must throw IndexSizeError");
1.107 + return;
1.108 + }
1.109 +
1.110 + // Now back to the editing spec.
1.111 + var originalRange = getSelection().getRangeAt(0);
1.112 +
1.113 + // "If node's root is not the same as the context object's range's root,
1.114 + // set new range's start and end to (node, offset)."
1.115 + //
1.116 + // "Otherwise, if anchor is before or equal to new focus, set new range's
1.117 + // start to anchor, then set its end to new focus."
1.118 + //
1.119 + // "Otherwise, set new range's start to new focus, then set its end to
1.120 + // anchor."
1.121 + //
1.122 + // "Set the context object's range to new range."
1.123 + //
1.124 + // "If new focus is before anchor, set the context object's direction to
1.125 + // backwards. Otherwise, set it to forwards."
1.126 + //
1.127 + // The upshot of all these is summed up by just testing the anchor and
1.128 + // offset.
1.129 + getSelection().extend(node, offset);
1.130 +
1.131 + if (furthestAncestor(anchorNode) == furthestAncestor(node)) {
1.132 + assert_equals(getSelection().anchorNode, anchorNode,
1.133 + "anchorNode must not change if the node passed to extend() has the same root as the original range");
1.134 + assert_equals(getSelection().anchorOffset, anchorOffset,
1.135 + "anchorOffset must not change if the node passed to extend() has the same root as the original range");
1.136 + } else {
1.137 + assert_equals(getSelection().anchorNode, node,
1.138 + "anchorNode must be the node passed to extend() if it has a different root from the original range");
1.139 + assert_equals(getSelection().anchorOffset, offset,
1.140 + "anchorOffset must be the offset passed to extend() if the node has a different root from the original range");
1.141 + }
1.142 + assert_equals(getSelection().focusNode, node,
1.143 + "focusNode must be the node passed to extend()");
1.144 + assert_equals(getSelection().focusOffset, offset,
1.145 + "focusOffset must be the offset passed to extend()");
1.146 + assert_not_equals(getSelection().getRangeAt(0), originalRange,
1.147 + "extend() must replace any existing range with a new one, not mutate the existing one");
1.148 +}
1.149 +
1.150 +testDiv.style.display = "none";
1.151 +</script>
