/// 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 ch15/15.2/15.2.3/15.2.3.10/15.2.3.10-3-5.js * @description Object.preventExtensions - indexed properties cannot be added into a String object */ function testcase() { var strObj = new String(); var preCheck = Object.isExtensible(strObj); Object.preventExtensions(strObj); try { Object.defineProperty(strObj, "0", { value: "c" }); return false; } catch (e) { return e instanceof TypeError && preCheck && !strObj.hasOwnProperty("0") && typeof strObj[0] === "undefined"; } } runTestCase(testcase);