The Tor Browser: js/src/jit-test/tests/collections/WeakMap-clear.js@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 var key = {};

     2 var wm = WeakMap();

     4 assertEq(wm.has(key), false);

     5 // Clearing an already empty WeakMap

     6 wm.clear();

     7 assertEq(wm.has(key), false);

     9 // Clearing a WeakMap with a live key

    10 wm.set(key, 42);

    11 assertEq(wm.has(key), true);

    12 wm.clear();

    13 assertEq(wm.has(key), false);

    15 // Clearing a WeakMap with keys turned to garbage

    16 wm.set(key, {});

    17 for (var i = 0; i < 10; i++)

    18     wm.set({}, {});

    19 assertEq(wm.has(key), true);

    20 wm.clear();

    21 assertEq(wm.has(key), false);

    23 // Clearing a WeakMap with keys turned to garbage and after doing a GC

    24 wm.set(key, {});

    25 for (var i = 0; i < 10; i++)

    26     wm.set({}, {});

    27 assertEq(wm.has(key), true);

    28 gc();

    29 assertEq(wm.has(key), true);

    30 wm.clear();

    31 assertEq(wm.has(key), false);

    33 // More testing when the key is no longer live

    34 wm.set(key, {});

    35 key = null;

    36 wm.clear();

    37 gc();

    38 var key2 = {};

    39 wm.set(key2, {});

    40 key2 = null;

    41 gc();

    42 wm.clear();

The Tor Browser / file revision