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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
(function () {
// No trap.
var target = {};
var handler = {};
var proxy = new Proxy(target, handler);
assertTrue(Reflect.isExtensible(target));
assertTrue(Reflect.isExtensible(proxy));
assertTrue(Reflect.preventExtensions(proxy));
assertFalse(Reflect.isExtensible(target));
assertFalse(Reflect.isExtensible(proxy));
})();
(function () {
// "Undefined" trap.
var target = {};
var handler = { isExtensible: null };
var proxy = new Proxy(target, handler);
assertTrue(Reflect.isExtensible(target));
assertTrue(Reflect.isExtensible(proxy));
assertTrue(Reflect.preventExtensions(proxy));
assertFalse(Reflect.isExtensible(target));
assertFalse(Reflect.isExtensible(proxy));
})();
(function () {
// Invalid trap.
var target = {};
var handler = { isExtensible: true };
var proxy = new Proxy(target, handler);
assertThrows(() => {Reflect.isExtensible(proxy)}, TypeError);
})();
(function () {
var target = {};
var handler = { isExtensible() {return "bla"} };
var proxy = new Proxy(target, handler);
// Trap returns trueish and target is extensible.
assertTrue(Reflect.isExtensible(proxy));
// Trap returns trueish but target is not extensible.
Reflect.preventExtensions(target);
assertThrows(() => {Reflect.isExtensible(proxy)}, TypeError);
})();
(function () {
var target = {};
var handler = { isExtensible() {return 0} };
var proxy = new Proxy(target, handler);
// Trap returns falsish but target is extensible.
assertThrows(() => {Reflect.isExtensible(proxy)}, TypeError);
// Trap returns falsish and target is not extensible.
Reflect.preventExtensions(target);
assertFalse(Reflect.isExtensible(proxy));
})();
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