// 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. /*--- description: > Object.preventExtensions - indexed properties cannot be added into a String object includes: [runTestCase.js] ---*/ 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);