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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 9.5.1
description: >
Throws a TypeError if the target is not extensible and the trap result is
not the same as the target.[[GetPrototypeOf]] result.
info: |
[[GetPrototypeOf]] ( )
...
1. Let handler be the value of the [[ProxyHandler]] internal slot of O.
...
4. Let target be the value of the [[ProxyTarget]] internal slot of O.
5. Let trap be GetMethod(handler, "getPrototypeOf").
...
8. Let handlerProto be Call(trap, handler, «target»).
...
11. Let extensibleTarget be IsExtensible(target).
...
14. Let targetProto be target.[[GetPrototypeOf]]().
15. ReturnIfAbrupt(targetProto).
16. If SameValue(handlerProto, targetProto) is false, throw a TypeError
exception.
...
features: [Proxy]
---*/
var target = Object.create({
foo: 1
});
var p = new Proxy(target, {
getPrototypeOf: function() {
return {};
}
});
Object.preventExtensions(target);
assert.throws(TypeError, function() {
Object.getPrototypeOf(p);
});
reportCompare(0, 0);
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