| // 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.map |
| description: > |
| Array.prototype.map - deleting property of prototype causes |
| prototype index property not to be visited on an Array |
| ---*/ |
| |
| function callbackfn(val, idx, obj) { |
| return idx === 1 && typeof val === "undefined"; |
| } |
| var arr = [0, , 2]; |
| |
| Object.defineProperty(arr, "0", { |
| get: function() { |
| delete Array.prototype[1]; |
| return 0; |
| }, |
| configurable: true |
| }); |
| |
| Array.prototype[1] = 1; |
| var testResult = arr.map(callbackfn); |
| |
| assert.sameValue(testResult.length, 3, 'testResult.length'); |
| assert.sameValue(typeof testResult[1], "undefined", 'typeof testResult[1]'); |
