| // Copyright 2015 Microsoft Corporation. All rights reserved. |
| // This code is governed by the license found in the LICENSE file. |
| |
| /*--- |
| description: Source array with boundary values |
| esid: sec-array.from |
| es6id: 22.1.2.1 |
| ---*/ |
| |
| var array = [Number.MAX_VALUE, Number.MIN_VALUE, Number.NaN, Number.NEGATIVE_INFINITY, Number.POSITIVE_INFINITY]; |
| var arrayIndex = -1; |
| |
| function mapFn(value, index) { |
| this.arrayIndex++; |
| assert.sameValue(value, array[this.arrayIndex], 'The value of value is expected to equal the value of array[this.arrayIndex]'); |
| assert.sameValue(index, this.arrayIndex, 'The value of index is expected to equal the value of this.arrayIndex'); |
| |
| return value; |
| } |
| |
| var a = Array.from(array, mapFn, this); |
| |
| assert.sameValue(a.length, array.length, 'The value of a.length is expected to equal the value of array.length'); |
| assert.sameValue(a[0], Number.MAX_VALUE, 'The value of a[0] is expected to equal the value of Number.MAX_VALUE'); |
| assert.sameValue(a[1], Number.MIN_VALUE, 'The value of a[1] is expected to equal the value of Number.MIN_VALUE'); |
| assert.sameValue(a[2], Number.NaN, 'The value of a[2] is expected to equal the value of Number.NaN'); |
| assert.sameValue(a[3], Number.NEGATIVE_INFINITY, 'The value of a[3] is expected to equal the value of Number.NEGATIVE_INFINITY'); |
| assert.sameValue(a[4], Number.POSITIVE_INFINITY, 'The value of a[4] is expected to equal the value of Number.POSITIVE_INFINITY'); |