// Copyright (c) 2012 Ecma International. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es5id: 15.2.3.6-4-171 description: > Object.defineProperty - 'O' is an Array, 'name' is the length property of 'O', the [[Value]] field of 'desc' is less than value of the length property, test the [[Configurable]] attribute of an inherited data property with large index named in 'O' can't stop deleting index named properties (15.4.5.1 step 3.l.ii) includes: [runTestCase.js] ---*/ function testcase() { var arrObj = [0, 1]; try { Array.prototype[1] = 2; // Not setting the [[Configurable]] attribute of property "1" to false here, since Array.prototype is a global object, and non-configurbale property can't revert to configurable Object.defineProperty(arrObj, "length", { value: 1 }); return arrObj.length === 1 && !arrObj.hasOwnProperty("1"); } finally { delete Array.prototype[1]; } } runTestCase(testcase);