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