// Copyright (c) 2012 Ecma International. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es5id: 15.2.3.10-3-5 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);