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// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-setprototypeof-v
description: >
If "setPrototypeOf" trap is null or undefined, [[SetPrototypeOf]] call
is properly forwarded to [[ProxyTarget]] (which is also a Proxy object).
info: |
[[SetPrototypeOf]] ( V )
[...]
5. Let target be O.[[ProxyTarget]].
6. Let trap be ? GetMethod(handler, "setPrototypeOf").
7. If trap is undefined, then
a. Return ? target.[[SetPrototypeOf]](V).
OrdinarySetPrototypeOf ( O, V )
[...]
4. Let extensible be O.[[Extensible]].
5. If extensible is false, return false.
features: [Proxy]
---*/
var array = [];
var arrayTarget = new Proxy(array, {});
var arrayProxy = new Proxy(arrayTarget, {
setPrototypeOf: undefined,
});
Object.setPrototypeOf(arrayProxy, Number.prototype);
assert.sameValue(Object.getPrototypeOf(array), Number.prototype);
Object.preventExtensions(array);
assert.throws(TypeError, function() {
Object.setPrototypeOf(arrayProxy, null);
});
reportCompare(0, 0);
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