1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/bindings/test/test_InstanceOf.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,54 @@
1.4 +<!DOCTYPE HTML>
1.5 +<html>
1.6 +<!--
1.7 +https://bugzilla.mozilla.org/show_bug.cgi?id=748983
1.8 +-->
1.9 +<head>
1.10 + <meta charset="utf-8">
1.11 + <title>Test for Bug 748983</title>
1.12 + <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
1.13 + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
1.14 +</head>
1.15 +<body>
1.16 +<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=748983">Mozilla Bug 748983</a>
1.17 +<p id="display"></p>
1.18 +<div id="content" style="display: none">
1.19 +</div>
1.20 +<pre id="test">
1.21 +<script type="application/javascript">
1.22 +
1.23 +/** Test for Bug 748983 **/
1.24 +
1.25 +SimpleTest.waitForExplicitFinish();
1.26 +
1.27 +function runTest()
1.28 +{
1.29 + ok(document instanceof EventTarget, "document is an event target")
1.30 + ok(new XMLHttpRequest() instanceof XMLHttpRequest, "instanceof should work on XHR");
1.31 + ok(HTMLElement.prototype instanceof Node, "instanceof needs to walk the prototype chain")
1.32 +
1.33 + var otherWin = document.getElementById("testFrame").contentWindow;
1.34 +
1.35 + ok(otherWin.HTMLElement.prototype instanceof otherWin.Node, "Same-origin instanceof of a interface prototype object should work, even if called cross-origin");
1.36 + ok(!(otherWin.HTMLElement.prototype instanceof Node), "Cross-origin instanceof of a interface prototype object shouldn't work");
1.37 +
1.38 + // We need to reset HTMLElement.prototype.__proto__ to the original value
1.39 + // before using anything from the harness, otherwise the harness code breaks
1.40 + // in weird ways.
1.41 + HTMLElement.prototype.__proto__ = otherWin.Element.prototype;
1.42 + var [ shouldSucceed, shouldFail ] = otherWin.runTest();
1.43 + shouldSucceed = shouldSucceed && HTMLElement.prototype instanceof otherWin.Element;
1.44 + shouldFail = shouldFail && HTMLElement.prototype instanceof Element;
1.45 + HTMLElement.prototype.__proto__ = Element.prototype;
1.46 +
1.47 + ok(shouldSucceed, "If an interface prototype object is on the protochain then instanceof with the interface object should succeed");
1.48 + ok(!shouldFail, "If an interface prototype object is not on the protochain then instanceof with the interface object should succeed");
1.49 +
1.50 + SimpleTest.finish();
1.51 +}
1.52 +
1.53 +</script>
1.54 +</pre>
1.55 +<iframe id="testFrame" src="file_InstanceOf.html" onload="runTest()"></iframe>
1.56 +</body>
1.57 +</html>
