js/xpconnect/tests/mochitest/test_bug585745.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=585745
   5 -->
   6 <head>
   7   <title>Test for Bug 585745</title>
   8   <script src="/tests/SimpleTest/SimpleTest.js"></script>
   9   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  10 </head>
  11 <body>
  12 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=585745">Mozilla Bug 585745</a>
  13 <p id="display"></p>
  14 <div id="content" style="display: none">
  15
  16 </div>
  17 <pre id="test">
  18 <script type="application/javascript">
  19
  20 /** Test for Bug 585745 **/
  21
  22   var a = document.createElementNS("http://www.w3.org/1998/Math/MathML", 'mrow');
  23   var b = document.createElementNS("http://www.w3.org/1999/xhtml", 'span');
  24   var htmlProto = Object.getPrototypeOf(b);
  25   var mathMLProto = Object.getPrototypeOf(a);
  26   // XXXbz once bug 560072 is fixed, we should be able to use
  27   // getOwnPropertyDescriptor here.
  28   Object.defineProperty(mathMLProto, "style", {
  29       get: htmlProto.__lookupGetter__("style"),
  30     });
  31
  32   var threw = false;
  33   try {
  34     a.style;
  35   } catch(e) {
  36     threw = true;
  37   }
  38   is(threw, true,
  39      "Getting .style off a mathml element should throw in this case");
  40 </script>
  41 </pre>
  42 </body>
  43 </html>