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60 lines
2.0 KiB
HTML
60 lines
2.0 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=817420
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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 817420</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=817420">Mozilla Bug 817420</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 817420 **/
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is(Object.getPrototypeOf(HTMLElement.prototype), Element.prototype,
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"Must have correct proto chain for HTMLElement.prototype");
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is(Object.getPrototypeOf(document.createElementNS(null, "x")),
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Element.prototype,
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"Must have correct proto chain for random element");
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is(Object.getPrototypeOf(document.createElement("noSuchElementName")),
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HTMLUnknownElement.prototype,
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"Must have correct proto chain for random HTML element");
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// And check that it's really working as it should
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function checkPropPresent(propName, objList, expected)
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{
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for (obj of objList) {
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is(propName in obj,
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expected,
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obj + " should " + (expected ? "" : "not ") + "have the property");
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}
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}
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var objList = [ Element.prototype,
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HTMLElement.prototype,
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document.createElementNS(null, "x"),
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document.createElement("noSuchElementName"),
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document.body ]
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checkPropPresent("somePropertyThatBetterNeverExist", objList, false);
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Element.prototype.somePropertyThatBetterNeverExist = 1;
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checkPropPresent("somePropertyThatBetterNeverExist", objList, true);
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objList = [ HTMLElement.prototype,
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document.createElement("noSuchElementName"),
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document.body ]
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checkPropPresent("someOtherPropertyThatBetterNeverExist", objList, false);
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HTMLElement.prototype.someOtherPropertyThatBetterNeverExist = 1;
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checkPropPresent("someOtherPropertyThatBetterNeverExist", objList, true);
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</script>
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</pre>
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</body>
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</html>
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