/// 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. /** * @path ch15/15.2/15.2.3/15.2.3.6/15.2.3.6-4-429.js * @description ES5 Attributes - success to update [[Configurable]] attribute of accessor property ([[Get]] is undefined, [[Set]] is undefined, [[Enumerable]] is true, [[Configurable]] is true) to different value */ function testcase() { var obj = {}; Object.defineProperty(obj, "prop", { get: undefined, set: undefined, enumerable: true, configurable: true }); var desc1 = Object.getOwnPropertyDescriptor(obj, "prop"); Object.defineProperty(obj, "prop", { configurable: false }); var desc2 = Object.getOwnPropertyDescriptor(obj, "prop"); delete obj.prop; return desc1.configurable === true && desc2.configurable === false && obj.hasOwnProperty("prop"); } runTestCase(testcase);