/// 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 ch15/15.4/15.4.4/15.4.4.21/15.4.4.21-9-c-ii-18.js * @description Array.prototype.reduce - value of 'accumulator' used for first iteration is the value of 'initialValue' when it is present on an Array-like object */ function testcase() { var result = false; function callbackfn(prevVal, curVal, idx, obj) { if (idx === 0) { result = (arguments[0] === 1); } } var obj = { 0: 11, 1: 9, length: 2 }; Array.prototype.reduce.call(obj, callbackfn, 1); return result; } runTestCase(testcase);