| // Copyright 2015 Microsoft Corporation. All rights reserved. |
| // This code is governed by the license found in the LICENSE file. |
| |
| /*--- |
| description: > |
| Elements deleted after the call started and before visited are not |
| visited |
| esid: sec-array.from |
| ---*/ |
| |
| var originalArray = [0, 1, -2, 4, -8, 16]; |
| var array = [0, 1, -2, 4, -8, 16]; |
| var a = []; |
| var arrayIndex = -1; |
| |
| function mapFn(value, index) { |
| this.arrayIndex++; |
| assert.sameValue(value, array[this.arrayIndex], "Value mismatch in mapFn at index " + index + "."); |
| assert.sameValue(index, this.arrayIndex, "Index mismatch in mapFn."); |
| |
| array.splice(array.length - 1, 1); |
| return 127; |
| } |
| |
| |
| a = Array.from(array, mapFn, this); |
| |
| assert.sameValue(a.length, originalArray.length / 2, "Length mismatch. Old array : " + (originalArray.length / 2) + ". array : " + a.length + "."); |
| |
| for (var j = 0; j < originalArray.length / 2; j++) { |
| assert.sameValue(a[j], 127, "Element mismatch for mapped array at index " + j + "."); |
| } |