| // Copyright 2014 the V8 project authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| "use strict"; | |
| var obj = { | |
| "length": 6, | |
| "1": "A", | |
| "3": "B", | |
| "5": "C" | |
| }; | |
| obj[Symbol.isConcatSpreadable] = true; | |
| var obj2 = { length: 3, "0": "0", "1": "1", "2": "2" }; | |
| var arr = ["X", "Y", "Z"]; | |
| assertEquals([void 0, "A", void 0, "B", void 0, "C", | |
| { "length": 3, "0": "0", "1": "1", "2": "2" }, | |
| "X", "Y", "Z"], Array.prototype.concat.call(obj, obj2, arr)); |