/// Copyright (c) 2012 Ecma International. All rights reserved. /// Ecma International makes this code available under the terms and conditions set /// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the /// "Use Terms"). Any redistribution of this code must retain the above /// copyright and this notice and otherwise comply with the Use Terms. /** * This test is actually testing the [[Delete]] internal method (8.12.8). Since the * language provides no way to directly exercise [[Delete]], the tests are placed here. * * @path ch11/11.4/11.4.1/11.4.1-4.a-1.js * @description delete operator returns true when deleting a configurable data property */ function testcase() { var o = {}; var desc = { value: 1, configurable: true }; Object.defineProperty(o, "foo", desc); var d = delete o.foo; if (d === true && o.hasOwnProperty("foo") === false) { return true; } } runTestCase(testcase);