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// Copyright (c) 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/*---
esid: sec-array.prototype.concat
description: Array.prototype.concat array like string length
includes: [compareArray.js]
features: [Symbol.isConcatSpreadable]
---*/
var obj = {
"length": "6",
"1": "A",
"3": "B",
"5": "C"
};
obj[Symbol.isConcatSpreadable] = true;
var obj2 = {
length: 3,
"0": "0",
"1": "1",
"2": "2"
};
var arr = ["X", "Y", "Z"];
var expected = [
void 0, "A", void 0, "B", void 0, "C",
obj2,
"X", "Y", "Z"
];
var actual = Array.prototype.concat.call(obj, obj2, arr);
assert.compareArray(actual, expected, 'The value of actual is expected to equal the value of expected');
reportCompare(0, 0);
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