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<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=688277
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<
title>Tests for nondeterministicGetWeakMapKeys</
title>
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script src=
"/tests/SimpleTest/SimpleTest.js"></
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/** 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();
});
SimpleTest.waitForExplicitFinish();
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