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// Copyright 2015 Microsoft Corporation. All rights reserved.
// This code is governed by the license found in the LICENSE file.
/*---
description: Elements added after the call to from
esid: sec-array.from
es6id: 22.1.2.1
---*/
var arrayIndex = -1;
var originalLength = 7;
var obj = {
length: originalLength,
0: 2,
1: 4,
2: 8,
3: 16,
4: 32,
5: 64,
6: 128
};
var array = [2, 4, 8, 16, 32, 64, 128];
function mapFn(value, index) {
arrayIndex++;
assert.sameValue(value, obj[arrayIndex], "Value mismatch in mapFn at index " + index + ".");
assert.sameValue(index, arrayIndex, "Index mismatch in mapFn.");
obj[originalLength + arrayIndex] = 2 * arrayIndex + 1;
return obj[arrayIndex];
}
var a = Array.from(obj, mapFn);
assert.sameValue(a.length, array.length, "Length mismatch.");
for (var j = 0; j < a.length; j++) {
assert.sameValue(a[j], array[j], "Element mismatch for array at index " + j + ".");
}
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