/// 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 ch15/15.4/15.4.4/15.4.4.22/15.4.4.22-3-19.js * @description Array.prototype.reduceRight - value of 'length' is an object which has an own toString method */ function testcase() { var testResult1 = true; var testResult2 = false; function callbackfn(prevVal, curVal, idx, obj) { if (idx > 1) { testResult1 = false; } if (idx === 1) { testResult2 = true; } return false; } var toStringAccessed = false; var obj = { 0: 12, 1: 11, 2: 9, length: { toString: function () { toStringAccessed = true; return '2'; } } }; // objects inherit the default valueOf() method from Object // that simply returns itself. Since the default valueOf() method // does not return a primitive value, ES next tries to convert the object // to a number by calling its toString() method and converting the // resulting string to a number. Array.prototype.reduceRight.call(obj, callbackfn, 1); return testResult1 && testResult2 && toStringAccessed; } runTestCase(testcase);