| // 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 when fromIndex is null | |
| ---*/ | |
| var a = new Array(1, 2, 1); | |
| // null resolves to 0 | |
| assert.sameValue(a.lastIndexOf(2, null), -1, 'a.lastIndexOf(2,null)'); | |
| assert.sameValue(a.lastIndexOf(1, null), 0, 'a.lastIndexOf(1,null)'); |