/// 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 ch15/15.4/15.4.4/15.4.4.22/15.4.4.22-9-b-16.js * @description Array.prototype.reduceRight - decreasing length of array in step 8 does not delete non-configurable properties */ function testcase() { var testResult = false; function callbackfn(prevVal, curVal, idx, obj) { if (idx === 2 && curVal === "unconfigurable") { testResult = true; } } var arr = [0, 1, 2, 3]; Object.defineProperty(arr, "2", { get: function () { return "unconfigurable"; }, configurable: false }); Object.defineProperty(arr, "3", { get: function () { arr.length = 2; return 1; }, configurable: true }); arr.reduceRight(callbackfn); return testResult; } runTestCase(testcase);