The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/ecma_5/extensions/proxy-array-target-length-definition.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,46 @@
     1.4 +/*
     1.5 + * Any copyright is dedicated to the Public Domain.
     1.6 + * http://creativecommons.org/licenses/publicdomain/
     1.7 + */
     1.8 +
     1.9 +var gTestfile = 'proxy-array-target-length-definition.js';
    1.10 +var BUGNUMBER = 905947;
    1.11 +var summary =
    1.12 +  "Redefining an array's |length| property when redefining the |length| " +
    1.13 +  "property on a proxy with an array as target";
    1.14 +
    1.15 +print(BUGNUMBER + ": " + summary);
    1.16 +
    1.17 +/**************
    1.18 + * BEGIN TEST *
    1.19 + **************/
    1.20 +
    1.21 +var arr = [];
    1.22 +var p = new Proxy(arr, {});
    1.23 +
    1.24 +// This really should throw a TypeError, but we're buggy just yet, and this
    1.25 +// silently does nothing.
    1.26 +Object.defineProperty(p, "length", { value: 17, configurable: true });
    1.27 +
    1.28 +// Same here.
    1.29 +Object.defineProperty(p, "length", { value: 42, enumerable: true });
    1.30 +
    1.31 +// But at least we can check the property went unchanged.
    1.32 +var pd = Object.getOwnPropertyDescriptor(p, "length");
    1.33 +assertEq(pd.value, 0);
    1.34 +assertEq(pd.writable, true);
    1.35 +assertEq(pd.enumerable, false);
    1.36 +assertEq(pd.configurable, false);
    1.37 +
    1.38 +var ad = Object.getOwnPropertyDescriptor(arr, "length");
    1.39 +assertEq(ad.value, 0);
    1.40 +assertEq(ad.writable, true);
    1.41 +assertEq(ad.enumerable, false);
    1.42 +assertEq(ad.configurable, false);
    1.43 +
    1.44 +/******************************************************************************/
    1.45 +
    1.46 +if (typeof reportCompare === "function")
    1.47 +  reportCompare(true, true);
    1.48 +
    1.49 +print("Tests complete");