function checkThrows(f, rgxp) { try { f(); do_check_false(); } catch (e) { Assert.ok(rgxp.test(e)); } } var o = { foo: 42, bar : { tick: 'tock' } }; function checkClone(clone, frozen) { var waived = Cu.waiveXrays(clone); function touchFoo() { "use strict"; waived.foo = 12; Assert.equal(waived.foo, 12); } function touchBar() { "use strict"; waived.bar.tick = 'tack'; Assert.equal(waived.bar.tick, 'tack'); } function addProp() { "use strict"; waived.newProp = 100; Assert.equal(waived.newProp, 100); } if (!frozen) { touchFoo(); touchBar(); addProp(); } else { checkThrows(touchFoo, /read-only/); checkThrows(touchBar, /read-only/); checkThrows(addProp, /extensible/); } var desc = Object.getOwnPropertyDescriptor(waived, 'foo'); Assert.equal(desc.writable, !frozen); Assert.equal(desc.configurable, !frozen); desc = Object.getOwnPropertyDescriptor(waived.bar, 'tick'); Assert.equal(desc.writable, !frozen); Assert.equal(desc.configurable, !frozen); } function run_test() { var sb = new Cu.Sandbox(null); checkClone(Cu.waiveXrays(Cu.cloneInto(o, sb)), false); checkClone(Cu.cloneInto(o, sb, { deepFreeze: true }), true); }