// Copyright (c) 2012 Ecma International. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es5id: 15.2.3.6-4-193 description: > Object.defineProperty - 'O' is an Array, 'name' is an array index named property, 'name' is own data property that overrides an inherited accessor property, test TypeError is thrown when update the [[Configurable]] attribute to true and value of [[Configurable]] attribute of original is false (15.4.5.1 step 4.c) includes: [runTestCase.js] ---*/ function testcase() { try { Object.defineProperty(Array.prototype, "0", { get: function () { return 11; }, configurable: true }); var arrObj = []; Object.defineProperty(arrObj, "0", { value: 12, configurable: false }); Object.defineProperty(arrObj, "0", { configurable: true }); return false; } catch (e) { return e instanceof TypeError && Array.prototype[0] === 11 && arrObj[0] === 12; } finally { delete Array.prototype[0]; } } runTestCase(testcase);