| // 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.concat |
| description: > |
| Array.prototype.concat will concat an Array when index property |
| (read-only) exists in Array.prototype (Step 5.b.iii.3.b) |
| includes: [propertyHelper.js] |
| ---*/ |
| |
| Object.defineProperty(Array.prototype, "0", { |
| value: 100, |
| writable: false, |
| configurable: true |
| }); |
| |
| var oldArr = [101]; |
| var newArr = Array.prototype.concat.call(oldArr); |
| |
| verifyProperty(newArr, "0", { |
| value: 101, |
| writable: true, |
| enumerable: true, |
| configurable: true, |
| }); |
