40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
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// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --harmony-proxies
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var handler = {};
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var target = {a:1};
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var proxy = new Proxy(target, handler);
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assertTrue(target.hasOwnProperty('a'));
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assertTrue(proxy.hasOwnProperty('a'));
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assertFalse(target.hasOwnProperty('b'));
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assertFalse(proxy.hasOwnProperty('b'));
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handler.has = function() {
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return false;
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}
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assertTrue(target.hasOwnProperty('a'));
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assertFalse(proxy.hasOwnProperty('a'));
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assertFalse(target.hasOwnProperty('b'));
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assertFalse(proxy.hasOwnProperty('b'));
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handler.has = function() {
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return true;
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}
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assertTrue(target.hasOwnProperty('a'));
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assertTrue(proxy.hasOwnProperty('a'));
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assertFalse(target.hasOwnProperty('b'));
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assertTrue(proxy.hasOwnProperty('b'));
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handler.has = function() {
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throw Error();
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}
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assertTrue(target.hasOwnProperty('a'));
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assertThrows(function(){ proxy.hasOwnProperty('a') }, Error);
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assertFalse(target.hasOwnProperty('b'));
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assertThrows(function(){ proxy.hasOwnProperty('b') }, Error);
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