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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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js/xpconnect/tests/chrome/test_getweakmapkeys.xul Normal file
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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=688277
-->
<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 688277</a>
</body>
<!-- test code goes here -->
<script type="application/javascript">
<![CDATA[
/** Test for Bug 688277 **/
let Cu = Components.utils;
/* Fail gracefully if junk is passed in. */
is(ThreadSafeChromeUtils.nondeterministicGetWeakMapKeys(11), undefined,
"nondeterministicGetWeakMapKeys should return undefined for non-objects");
is(ThreadSafeChromeUtils.nondeterministicGetWeakMapKeys({}), undefined,
"nondeterministicGetWeakMapKeys should return undefined for non-weakmap objects");
is(ThreadSafeChromeUtils.nondeterministicGetWeakMapKeys(null), undefined,
"nondeterministicGetWeakMapKeys should return undefined for null");
/* return an empty array for an empty WeakMap */
let mempty = new WeakMap();
is(ThreadSafeChromeUtils.nondeterministicGetWeakMapKeys(mempty).length, 0,
"nondeterministicGetWeakMapKeys should return empty array for empty weakmap");
/* Test freeing/nonfreeing. */
let m = new WeakMap();
let liveKeys = new Array();
let add_elements = function () {
let k1 = {};
m.set(k1, "live1");
liveKeys.push(k1);
let k2 = {};
m.set(k2, "dead1");
let k = {};
m.set(k, k); /* simple cycle */
};
add_elements();
Cu.schedulePreciseGC(function () {
let keys = ThreadSafeChromeUtils.nondeterministicGetWeakMapKeys(m);
is(liveKeys.length, 1, "Wrong number of live keys.");
is(keys.length, 1, "Should have one weak map key.");
is(m.get(keys[0]), "live1", "live1 should be live");
SimpleTest.finish();
});
SimpleTest.waitForExplicitFinish();
]]>
</script>
</window>