The Tor Browser: js/src/tests/ecma_6/Set/NaN-as-key.js@b8a032363ba2

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

     1 /*

     2  * Any copyright is dedicated to the Public Domain.

     3  * http://creativecommons.org/licenses/publicdomain/

     4  */

     6 //-----------------------------------------------------------------------------

     7 var BUGNUMBER = 722260;

     8 var summary = 'All NaNs must be treated as identical keys for Set';

    10 print(BUGNUMBER + ": " + summary);

    12 /**************

    13  * BEGIN TEST *

    14  **************/

    16 /* Avoid constant-folding that would happen were |undefined| to be used. */

    17 var key = -/a/g.missingProperty;

    19 var s = new Set();

    20 s.add(key, 17);

    21 assertEq(s.has(key), true);

    22 assertEq(s.has(-key), true);

    23 assertEq(s.has(NaN), true);

    25 s.delete(-key);

    26 assertEq(s.has(key), false);

    27 assertEq(s.has(-key), false);

    28 assertEq(s.has(NaN), false);

    30 s.add(-key, 17);

    31 assertEq(s.has(key), true);

    32 assertEq(s.has(-key), true);

    33 assertEq(s.has(NaN), true);

    35 s.delete(NaN);

    36 assertEq(s.has(key), false);

    37 assertEq(s.has(-key), false);

    38 assertEq(s.has(NaN), false);

    40 s.add(NaN, 17);

    41 assertEq(s.has(key), true);

    42 assertEq(s.has(-key), true);

    43 assertEq(s.has(NaN), true);

    45 s.delete(key);

    46 assertEq(s.has(key), false);

    47 assertEq(s.has(-key), false);

    48 assertEq(s.has(NaN), false);

    51 /******************************************************************************/

    53 if (typeof reportCompare === "function")

    54   reportCompare(true, true);

    56 print("Tests complete");

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