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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 )
[...]
8. Repeat, while done is false,
a. If p is null, set done to true.
b. Else if SameValue(p, O) is true, return false.
[...]
features: [Proxy]
---*/
var plainObject = {};
var plainObjectTarget = new Proxy(plainObject, {});
var plainObjectProxy = new Proxy(plainObjectTarget, {
setPrototypeOf: null,
});
Object.setPrototypeOf(plainObjectProxy, null);
assert.sameValue(Object.getPrototypeOf(plainObject), null);
var cyclicPrototype = Object.create(plainObject);
assert.throws(TypeError, function() {
Object.setPrototypeOf(plainObjectProxy, cyclicPrototype);
});
reportCompare(0, 0);
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