gecko/js/xpconnect/tests/chrome/test_weakmap_keys_preserved.xul

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<?xml version="1.0"?>
<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=673468
-->
<window title="Mozilla Bug "
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
<!-- 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="
target="_blank">Mozilla Bug 673468</a>
</body>
<!-- test code goes here -->
<script type="application/javascript">
<![CDATA[
/** Test for Bug 673468 **/
let Cc = Components.classes;
let Cu = Components.utils;
let Ci = Components.interfaces;
let system = Cc["@mozilla.org/systemprincipal;1"].createInstance();
let sandbox = Cu.Sandbox(system);
let map = sandbox.WeakMap();
let obj = {};
map.set(obj, {});
Cu.forceGC();
ok(map.has(obj), "Weakmap still contains our wrapper!");
]]>
</script>
</window>