michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* See https://bugzilla.mozilla.org/show_bug.cgi?id=780370 */
michael@0: 
michael@0: const Cu = Components.utils;
michael@0: 
michael@0: // Use a COW to expose a function from a standard prototype, and make sure it's
michael@0: // still remapped.
michael@0: 
michael@0: function run_test()
michael@0: {
michael@0:   var sb = Cu.Sandbox("http://www.example.com");
michael@0:   sb.obj = { foo: 42, __exposedProps__: { hasOwnProperty: 'r' } };
michael@0:   do_check_eq(Cu.evalInSandbox('typeof obj.foo', sb), 'undefined', "COW works as expected");
michael@0:   do_check_true(Cu.evalInSandbox('obj.hasOwnProperty === Object.prototype.hasOwnProperty', sb),
michael@0:                 "Remapping happens even when the property is explicitly exposed");
michael@0:   // NB: We used to test for the following, but such behavior became very
michael@0:   // difficult to implement in a recent refactor. We're moving away from this
michael@0:   // API anyway, so we decided to explicitly drop support for this.
michael@0:   // do_check_eq(Cu.evalInSandbox('Object.prototype.bar = 10; obj.bar', sb), 10);
michael@0: }