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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.
/*---
esid: sec-array.prototype.concat
description: Species constructor of a Proxy object whose target is an array
info: |
[...]
2. Let A be ? ArraySpeciesCreate(O, 0).
[...]
7. Return A.
9.4.2.3 ArraySpeciesCreate
[...]
3. Let isArray be ? IsArray(originalArray).
7.2.2 IsArray
[...]
3. If argument is a Proxy exotic object, then
a. If the value of the [[ProxyHandler]] internal slot of argument is
null, throw a TypeError exception.
b. Let target be the value of the [[ProxyTarget]] internal slot of
argument.
c. Return ? IsArray(target).
features: [Proxy, Symbol.species]
---*/
var array = [];
var proxy = new Proxy(new Proxy(array, {}), {});
var Ctor = function() {};
var result;
array.constructor = function() {};
array.constructor[Symbol.species] = Ctor;
result = Array.prototype.concat.call(proxy);
assert.sameValue(
Object.getPrototypeOf(result),
Ctor.prototype,
'Object.getPrototypeOf(Array.prototype.concat.call(proxy)) returns Ctor.prototype'
);
reportCompare(0, 0);
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