| // Copyright 2015 Microsoft Corporation. All rights reserved. |
| // This code is governed by the license found in the LICENSE file. |
| |
| /*--- |
| description: Elements are updated after the call to from |
| esid: sec-array.from |
| ---*/ |
| |
| var array = [127, 4, 8, 16, 32, 64, 128]; |
| var arrayIndex = -1; |
| |
| function mapFn(value, index) { |
| arrayIndex++; |
| if (index + 1 < array.length) { |
| array[index + 1] = 127; |
| } |
| assert.sameValue(value, 127, 'The value of value is expected to be 127'); |
| assert.sameValue(index, arrayIndex, 'The value of index is expected to equal the value of arrayIndex'); |
| |
| return value; |
| } |
| |
| var a = Array.from(array, mapFn); |
| assert.sameValue(a.length, array.length, 'The value of a.length is expected to equal the value of array.length'); |
| for (var j = 0; j < a.length; j++) { |
| assert.sameValue(a[j], 127, 'The value of a[j] is expected to be 127'); |
| } |