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55 lines
2.2 KiB
HTML
55 lines
2.2 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=748983
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-->
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<head>
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<meta charset="utf-8">
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<title>Test for Bug 748983</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=748983">Mozilla Bug 748983</a>
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<p id="display"></p>
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<div id="content" style="display: none">
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</div>
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<pre id="test">
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<script type="application/javascript">
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/** Test for Bug 748983 **/
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SimpleTest.waitForExplicitFinish();
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function runTest()
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{
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ok(document instanceof EventTarget, "document is an event target")
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ok(new XMLHttpRequest() instanceof XMLHttpRequest, "instanceof should work on XHR");
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ok(HTMLElement.prototype instanceof Node, "instanceof needs to walk the prototype chain")
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var otherWin = document.getElementById("testFrame").contentWindow;
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ok(otherWin.HTMLElement.prototype instanceof otherWin.Node, "Same-origin instanceof of a interface prototype object should work, even if called cross-origin");
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ok(!(otherWin.HTMLElement.prototype instanceof Node), "Cross-origin instanceof of a interface prototype object shouldn't work");
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// We need to reset HTMLElement.prototype.__proto__ to the original value
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// before using anything from the harness, otherwise the harness code breaks
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// in weird ways.
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HTMLElement.prototype.__proto__ = otherWin.Element.prototype;
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var [ shouldSucceed, shouldFail ] = otherWin.runTest();
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shouldSucceed = shouldSucceed && HTMLElement.prototype instanceof otherWin.Element;
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shouldFail = shouldFail && HTMLElement.prototype instanceof Element;
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HTMLElement.prototype.__proto__ = Element.prototype;
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ok(shouldSucceed, "If an interface prototype object is on the protochain then instanceof with the interface object should succeed");
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ok(!shouldFail, "If an interface prototype object is not on the protochain then instanceof with the interface object should succeed");
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SimpleTest.finish();
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}
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</script>
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</pre>
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<iframe id="testFrame" src="file_InstanceOf.html" onload="runTest()"></iframe>
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</body>
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</html>
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