| // 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.lastindexof |
| description: > |
| Array.prototype.lastIndexOf - deleting own property with |
| prototype property causes prototype index property to be visited |
| on an Array-like object |
| ---*/ |
| |
| var arr = { |
| 0: 0, |
| 1: 111, |
| 2: 2, |
| length: 10 |
| }; |
| |
| Object.defineProperty(arr, "6", { |
| get: function() { |
| delete arr[1]; |
| return 0; |
| }, |
| configurable: true |
| }); |
| |
| Object.prototype[1] = 1; |
| |
| assert.sameValue(Array.prototype.lastIndexOf.call(arr, 1), 1, 'Array.prototype.lastIndexOf.call(arr, 1)'); |
