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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
Throws a TypeError when target property is not configurable neither writable
and its value is not strictly equal to V.
info: |
14. If targetDesc is not undefined, then
a. If IsDataDescriptor(targetDesc) and targetDesc.[[Configurable]] is
false and targetDesc.[[Writable]] is false, then
i. If SameValue(V, targetDesc.[[Value]]) is false, throw a TypeError
exception.
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return true;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, 'attr', {
configurable: false,
writable: false,
value: 'foo'
});
assert.throws(TypeError, function() {
p.attr = 'bar';
});
assert.throws(TypeError, function() {
p['attr'] = 'bar';
});
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