test_bug585745.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=585745

-->

<head>

  <title>Test for Bug 585745</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=585745">Mozilla Bug 585745</a>

<p id="display"></p>

<div id="content" style="display: none">

</div>

<pre id="test">

<script type="application/javascript">

/** Test for Bug 585745 **/

  var a = document.createElementNS("http://www.w3.org/1998/Math/MathML", 'mrow');

  var b = document.createElementNS("http://www.w3.org/1999/xhtml", 'span');

  var htmlProto = Object.getPrototypeOf(b);

  var mathMLProto = Object.getPrototypeOf(a);

  // XXXbz once bug 560072 is fixed, we should be able to use

  // getOwnPropertyDescriptor here.

  Object.defineProperty(mathMLProto, "style", {

      get: htmlProto.__lookupGetter__("style"),

});

  var threw = false;

  try {

    a.style;

  } catch(e) {

    threw = true;

  is(threw, true,

     "Getting .style off a mathml element should throw in this case");

</script>

</pre>

</body>

</html>