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Diffstat (limited to 'testing/web-platform/tests/selection/extend.html')
| -rw-r--r-- | testing/web-platform/tests/selection/extend.html | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/testing/web-platform/tests/selection/extend.html b/testing/web-platform/tests/selection/extend.html new file mode 100644 index 000000000..e00f8c401 --- /dev/null +++ b/testing/web-platform/tests/selection/extend.html @@ -0,0 +1,149 @@ +<!doctype html> +<title>Selection extend() tests</title> +<meta charset=utf-8> +<meta name=timeout content=long> +<body> +<script src=/resources/testharness.js></script> +<script src=/resources/testharnessreport.js></script> +<script src=common.js></script> +<div id=log></div> +<script> +"use strict"; + +// Also test a selection with no ranges +testRanges.unshift("[]"); + +/** + * We test Selections that go both forwards and backwards here. In the latter + * case we need to use extend() to force it to go backwards, which is fair + * enough, since that's what we're testing. We test collapsed selections only + * once. + */ +for (var i = 0; i < testRanges.length; i++) { + var endpoints = eval(testRanges[i]); + for (var j = 0; j < testPoints.length; j++) { + if (endpoints[0] == endpoints[2] + && endpoints[1] == endpoints[3]) { + // Test collapsed selections only once + test(function() { + setSelectionForwards(endpoints); + testExtend(endpoints, eval(testPoints[j])); + }, "extend() with range " + i + " " + testRanges[i] + + " and point " + j + " " + testPoints[j]); + } else { + test(function() { + setSelectionForwards(endpoints); + testExtend(endpoints, eval(testPoints[j])); + }, "extend() forwards with range " + i + " " + testRanges[i] + + " and point " + j + " " + testPoints[j]); + + test(function() { + setSelectionBackwards(endpoints); + testExtend(endpoints, eval(testPoints[j])); + }, "extend() backwards with range " + i + " " + testRanges[i] + + " and point " + j + " " + testPoints[j]); + } + } +} + +function testExtend(endpoints, target) { + assert_equals(getSelection().rangeCount, endpoints.length/4, + "Sanity check: rangeCount must be correct"); + + var node = target[0]; + var offset = target[1]; + + // "If the context object's range is null, throw an InvalidStateError + // exception and abort these steps." + if (getSelection().rangeCount == 0) { + assert_throws("INVALID_STATE_ERR", function() { + selection.extend(node, offset); + }, "extend() when rangeCount is 0 must throw InvalidStateError"); + return; + } + + assert_equals(getSelection().getRangeAt(0).startContainer, endpoints[0], + "Sanity check: startContainer must be correct"); + assert_equals(getSelection().getRangeAt(0).startOffset, endpoints[1], + "Sanity check: startOffset must be correct"); + assert_equals(getSelection().getRangeAt(0).endContainer, endpoints[2], + "Sanity check: endContainer must be correct"); + assert_equals(getSelection().getRangeAt(0).endOffset, endpoints[3], + "Sanity check: endOffset must be correct"); + + // "Let anchor and focus be the context object's anchor and focus, and let + // new focus be the boundary point (node, offset)." + var anchorNode = getSelection().anchorNode; + var anchorOffset = getSelection().anchorOffset; + var focusNode = getSelection().focusNode; + var focusOffset = getSelection().focusOffset; + + // "Let new range be a new range." + // + // We'll always be setting either new range's start or its end to new + // focus, so we'll always throw at some point. Test that now. + // + // From DOM4's "set the start or end of a range": "If node is a doctype, + // throw an "InvalidNodeTypeError" exception and terminate these steps." + if (node.nodeType == Node.DOCUMENT_TYPE_NODE) { + assert_throws("INVALID_NODE_TYPE_ERR", function() { + selection.extend(node, offset); + }, "extend() to a doctype must throw InvalidNodeTypeError"); + return; + } + + // From DOM4's "set the start or end of a range": "If offset is greater + // than node's length, throw an "IndexSizeError" exception and terminate + // these steps." + // + // FIXME: We should be casting offset to an unsigned int per WebIDL. Until + // we do, we need the offset < 0 check too. + if (offset < 0 || offset > getNodeLength(node)) { + assert_throws("INDEX_SIZE_ERR", function() { + selection.extend(node, offset); + }, "extend() to an offset that's greater than node length (" + getNodeLength(node) + ") must throw IndexSizeError"); + return; + } + + // Now back to the editing spec. + var originalRange = getSelection().getRangeAt(0); + + // "If node's root is not the same as the context object's range's root, + // set new range's start and end to (node, offset)." + // + // "Otherwise, if anchor is before or equal to new focus, set new range's + // start to anchor, then set its end to new focus." + // + // "Otherwise, set new range's start to new focus, then set its end to + // anchor." + // + // "Set the context object's range to new range." + // + // "If new focus is before anchor, set the context object's direction to + // backwards. Otherwise, set it to forwards." + // + // The upshot of all these is summed up by just testing the anchor and + // offset. + getSelection().extend(node, offset); + + if (furthestAncestor(anchorNode) == furthestAncestor(node)) { + assert_equals(getSelection().anchorNode, anchorNode, + "anchorNode must not change if the node passed to extend() has the same root as the original range"); + assert_equals(getSelection().anchorOffset, anchorOffset, + "anchorOffset must not change if the node passed to extend() has the same root as the original range"); + } else { + assert_equals(getSelection().anchorNode, node, + "anchorNode must be the node passed to extend() if it has a different root from the original range"); + assert_equals(getSelection().anchorOffset, offset, + "anchorOffset must be the offset passed to extend() if the node has a different root from the original range"); + } + assert_equals(getSelection().focusNode, node, + "focusNode must be the node passed to extend()"); + assert_equals(getSelection().focusOffset, offset, + "focusOffset must be the offset passed to extend()"); + assert_not_equals(getSelection().getRangeAt(0), originalRange, + "extend() must replace any existing range with a new one, not mutate the existing one"); +} + +testDiv.style.display = "none"; +</script> |