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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 22.1.1
description: Subclassing Array
info: |
22.1.1 The Array Constructor
The Array constructor is designed to be subclassable. It may be used as the
value of an extends clause of a class definition. (...)
includes: [compareArray.js]
---*/
class Sub extends Array {}
var a1 = new Sub(42, 'foo');
assert.sameValue(a1.length, 2);
assert.sameValue(a1[0], 42);
assert.sameValue(a1[1], 'foo');
a1.push(true);
assert.sameValue(a1.length, 3, 'Array#push updates the length property');
assert.sameValue(a1[0], 42);
assert.sameValue(a1[1], 'foo');
assert.sameValue(a1[2], true, 'Adds new item');
var a2 = new Sub(7);
assert.sameValue(a2.length, 7);
var a3 = new Sub();
assert.compareArray(a3, []);
assert.sameValue(a3.length, 0);
reportCompare(0, 0);
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