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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=817420
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 817420</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=817420">Mozilla Bug 817420</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 817420 **/
is(Object.getPrototypeOf(HTMLElement.prototype), Element.prototype,
"Must have correct proto chain for HTMLElement.prototype");
is(Object.getPrototypeOf(document.createElementNS(null, "x")),
Element.prototype,
"Must have correct proto chain for random element");
is(Object.getPrototypeOf(document.createElement("noSuchElementName")),
HTMLUnknownElement.prototype,
"Must have correct proto chain for random HTML element");
// And check that it's really working as it should
function checkPropPresent(propName, objList, expected)
{
for (obj of objList) {
is(propName in obj,
expected,
obj + " should " + (expected ? "" : "not ") + "have the property");
}
}
var objList = [ Element.prototype,
HTMLElement.prototype,
document.createElementNS(null, "x"),
document.createElement("noSuchElementName"),
document.body ]
checkPropPresent("somePropertyThatBetterNeverExist", objList, false);
Element.prototype.somePropertyThatBetterNeverExist = 1;
checkPropPresent("somePropertyThatBetterNeverExist", objList, true);
objList = [ HTMLElement.prototype,
document.createElement("noSuchElementName"),
document.body ]
checkPropPresent("someOtherPropertyThatBetterNeverExist", objList, false);
HTMLElement.prototype.someOtherPropertyThatBetterNeverExist = 1;
checkPropPresent("someOtherPropertyThatBetterNeverExist", objList, true);
</script>
</pre>
</body>
</html>
|
