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Diffstat (limited to 'dom/base/test/test_NodeIterator_basics_filters.xhtml')
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1 files changed, 178 insertions, 0 deletions
diff --git a/dom/base/test/test_NodeIterator_basics_filters.xhtml b/dom/base/test/test_NodeIterator_basics_filters.xhtml new file mode 100644 index 0000000000..768782dc2a --- /dev/null +++ b/dom/base/test/test_NodeIterator_basics_filters.xhtml @@ -0,0 +1,178 @@ +<html xmlns="http://www.w3.org/1999/xhtml"> +<!-- NodeIterator basics and filters tests. + Originally written by Ian Hickson, Mochi-ified by Zack Weinberg. + This file based on 001.xml, 002.xml, and 010.xml from + http://hixie.ch/tests/adhoc/dom/traversal/node-iterator/ + with some additional cases. + --> +<head> + <title>DOM Traversal: NodeIterator: Basics and Filters</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> +</head> +<body> +<p id="display"></p> +<div id="content" style="display: none"> +<!-- comment --> +<?body processing instruction?> +</div> +<pre id="test"> +<script class="testbody" type="text/javascript"><![CDATA[ + function compare_arrays(e, f, label) { + var length = (e.length > f.length) ? e.length : f.length; + for (var i = 0; i < length; i += 1) { + if (e[i] > 0) + is(f[i], e[i], label + " - index " + i + ": "); + else + todo_is(f[i], -e[i], label + " - index " + i + ": "); + } + } + + /** DOM Traversal: NodeIterator: Basics **/ + // NOTE: If you change the document structure, you have to make sure + // the magic numbers in this array (and 'expected_f', below) match. + var expected = new Array(9, // document + 1, // html + 3, 8, // leading comment + 3, 1, // head + 3, 1, 3, // title + 3, 1, // first script tag + 3, 1, // stylesheet tag + 3, // close head + 3, 1, // body + 3, 1, // p#display + 3, 1, // div#content + 3, 8, // comment + 3, 7, // processing instruction + 3, // close div + 3, 1, // pre#test + 3, 1, 4, // script and CDATA block + -3, -3, -3); // close close close + // these aren't there + // not sure why + var found = new Array(); + + var iterator = document.createNodeIterator(document, + NodeFilter.SHOW_ALL, + null); + var node; + + // forwards + while ((node = iterator.nextNode())) + found.push(node.nodeType); + compare_arrays(expected, found, 'basics forward'); + + // backwards + found.length = 0; + while ((node = iterator.previousNode())) + found.unshift(node.nodeType); + compare_arrays(expected, found, 'basics backward'); + + /** DOM Traversal: NodeIterator: Filters **/ + function filter(n) { + if (n.nodeType == 3) { + return NodeFilter.FILTER_SKIP; + } else if (n.nodeName == 'body') { + return NodeFilter.FILTER_REJECT; // same as _SKIP + } + return 1; // FILTER_ACCEPT + } + + // Same warning applies to this array as to 'expected'. + var expect_f = new Array(9, // document + 1, // html + 8, // leading comment + 1, // head + 1, // title + 1, // first script tag + 1, // stylesheet tag + // body skipped + 1, // p#display + 1, // div#content + 8, // comment + // processing instruction skipped + 1, // pre#test + 1, 4); // script and CDATA block + + found.length = 0; + iterator = document.createNodeIterator(document, NodeFilter.SHOW_ALL, + filter); + + // forwards + while ((node = iterator.nextNode())) + found.push(node.nodeType); + compare_arrays(expect_f, found, 'filtered forward'); + + // backwards + found.length = 0; + while ((node = iterator.previousNode())) + found.unshift(node.nodeType); + compare_arrays(expect_f, found, 'filtered backward'); + + function checkBadFilter(method, n) { + var iter = + document.createNodeIterator(document, NodeFilter.SHOW_ALL, + function() { + if (n < 0) + iter.detach(); + return NodeFilter.FILTER_ACCEPT; + }); + while (--n >= 0) + iter.nextNode(); + try { + iter[method](); + ok(true, "Able to call " + method + " on a NodeIterator after calling no-op detach()"); + } catch (x) { ok(false, x) } + } + checkBadFilter("nextNode", 2); + checkBadFilter("previousNode", 3); + + (function() { + // Implementing the scenario outlined in + // http://bugzilla.mozilla.org/show_bug.cgi?id=552110#c4 + + var iter = (function(filt) { + var grandparent = document.createElement("div"), + parent = document.createElement("span"); + + grandparent.appendChild(parent); + parent.appendChild(document.createElement("img")); + parent.appendChild(document.createElement("p")); + + return document.createNodeIterator(grandparent, + NodeFilter.SHOW_ALL, + filt); + })(function(n) { + if (n.nodeName != "img") + return NodeFilter.FILTER_ACCEPT; + + iter.detach(); + + n.parentNode.remove(); + // Drop any node references passed into this function. + for (var i = 0; i < arguments.length; ++i) + arguments[i] = null; + ok(!n, "arguments[0] = null should have nulled out n"); + + // Try to trigger GC. + var xhr = new XMLHttpRequest(); + xhr.open("GET", location.href, false); + xhr.send(); + + return NodeFilter.FILTER_SKIP; + }); + + is(iter.nextNode().nodeName, "div", + "iter.nextNode() returned the wrong node"); + is(iter.nextNode().nodeName, "span", + "iter.nextNode() returned the wrong node"); + try { + var p = iter.nextNode(); + ok(false, "iter.nextNode() should have thrown, but instead it returned <" + p.nodeName + ">"); + } catch (x) { ok(true, x) } + })(); + +]]></script> +</pre> +</body> +</html> |