gecko-dev/js/xpconnect/tests/chrome/test_bug500931.xul

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
                 type="text/css"?>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=500931
-->
<window title="Mozilla Bug 500931"
  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
  <script type="application/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

  <!-- test results are displayed in the html:body -->
  <body xmlns="http://www.w3.org/1999/xhtml">
  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=500931"
     target="_blank">Mozilla Bug 500931</a>
  </body>

  <!-- test code goes here -->
  <script type="application/javascript"><![CDATA[

  /** Test for Bug 500931 **/

  function go() {
    var ifr = document.getElementById("ifr");
    var doc = ifr.contentDocument;
    ok(Components.utils.isXrayWrapper(doc), "doc is an XrayWrapper");
    var weak = Components.utils.getWeakReference(doc);
    ok(Components.utils.isXrayWrapper(weak.get()), "weak reference returns a wrapper");
    SimpleTest.finish();
  }

  SimpleTest.waitForExplicitFinish();

  ]]></script>
  <iframe type="content"
          src="http://example.org/tests/js/xpconnect/tests/mochitest/bug500931_helper.html"
          onload="go()"
          id="ifr">
  </iframe>
</window>