/// 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-c-ii-19.js * @description Array.prototype.reduceRight - value of 'accumulator' used for first iteration is the value of max index property which is not undefined when 'initialValue' is not present on an Array */ function testcase() { var arr = [11, 12, 13]; var testResult = false; function callbackfn(prevVal, curVal, idx, obj) { if (idx === 1) { testResult = (prevVal === 13); } return curVal; } arr.reduceRight(callbackfn); return testResult; } runTestCase(testcase);