<!DOCTYPEHTML>
<html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=688277
-->
<head>
<meta charset="utf-8">
<title>Tests for nondeterministicGetWeakMapKeys</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
/** Test for Bug 688277 **/
/* Fail gracefully if junk is passed in. */
is(SpecialPowers.nondeterministicGetWeakMapKeys(11), undefined, "nondeterministicGetWeakMapKeys should return undefined for non-objects");
is(SpecialPowers.nondeterministicGetWeakMapKeys({}), undefined, "nondeterministicGetWeakMapKeys should return undefined for non-weakmap objects");
is(SpecialPowers.nondeterministicGetWeakMapKeys(null), undefined, "nondeterministicGetWeakMapKeys should return undefined for null");
/* return an empty array for an empty WeakMap */
let mempty = new WeakMap();
is(SpecialPowers.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();
SpecialPowers.exactGC(function () {
let keys = SpecialPowers.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();
});
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