The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/xpconnect/tests/unit/test_bug780370.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,23 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +/* See https://bugzilla.mozilla.org/show_bug.cgi?id=780370 */
     1.9 +
    1.10 +const Cu = Components.utils;
    1.11 +
    1.12 +// Use a COW to expose a function from a standard prototype, and make sure it's
    1.13 +// still remapped.
    1.14 +
    1.15 +function run_test()
    1.16 +{
    1.17 +  var sb = Cu.Sandbox("http://www.example.com");
    1.18 +  sb.obj = { foo: 42, __exposedProps__: { hasOwnProperty: 'r' } };
    1.19 +  do_check_eq(Cu.evalInSandbox('typeof obj.foo', sb), 'undefined', "COW works as expected");
    1.20 +  do_check_true(Cu.evalInSandbox('obj.hasOwnProperty === Object.prototype.hasOwnProperty', sb),
    1.21 +                "Remapping happens even when the property is explicitly exposed");
    1.22 +  // NB: We used to test for the following, but such behavior became very
    1.23 +  // difficult to implement in a recent refactor. We're moving away from this
    1.24 +  // API anyway, so we decided to explicitly drop support for this.
    1.25 +  // do_check_eq(Cu.evalInSandbox('Object.prototype.bar = 10; obj.bar', sb), 10);
    1.26 +}