| // Copyright (c) 2012 Ecma International. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-array.prototype.reduceright |
| description: > |
| Array.prototype.reduceRight - value of 'length' is an object which |
| has an own toString method |
| ---*/ |
| |
| 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); |
| |
| assert(testResult1, 'testResult1 !== true'); |
| assert(testResult2, 'testResult2 !== true'); |
| assert(toStringAccessed, 'toStringAccessed !== true'); |