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452c0e5c61
* 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
39 lines
1.0 KiB
JavaScript
39 lines
1.0 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: Elements added after the call to from
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esid: sec-array.from
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---*/
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var arrayIndex = -1;
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var originalLength = 7;
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var obj = {
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length: originalLength,
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0: 2,
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1: 4,
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2: 8,
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3: 16,
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4: 32,
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5: 64,
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6: 128
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};
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var array = [2, 4, 8, 16, 32, 64, 128];
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function mapFn(value, index) {
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arrayIndex++;
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assert.sameValue(value, obj[arrayIndex], 'The value of value is expected to equal the value of obj[arrayIndex]');
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assert.sameValue(index, arrayIndex, 'The value of index is expected to equal the value of arrayIndex');
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obj[originalLength + arrayIndex] = 2 * arrayIndex + 1;
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return obj[arrayIndex];
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}
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var a = Array.from(obj, mapFn);
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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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for (var j = 0; j < a.length; j++) {
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assert.sameValue(a[j], array[j], 'The value of a[j] is expected to equal the value of array[j]');
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}
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