1 // Copyright 2015 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Flags: --harmony-proxies 6 7 var handler = {}; 8 var target = {a:1}; 9 var proxy = new Proxy(target, handler); 10 11 assertTrue(target.hasOwnProperty('a')); 12 assertTrue(proxy.hasOwnProperty('a')); 13 assertFalse(target.hasOwnProperty('b')); 14 assertFalse(proxy.hasOwnProperty('b')); 15 16 17 handler.has = function() { assertUnreachable() } 18 handler.getOwnPropertyDescriptor = function () {} 19 20 assertTrue(target.hasOwnProperty('a')); 21 assertFalse(proxy.hasOwnProperty('a')); 22 assertFalse(target.hasOwnProperty('b')); 23 assertFalse(proxy.hasOwnProperty('b')); 24 25 26 handler.getOwnPropertyDescriptor = function() { return {configurable: true} } 27 28 assertTrue(target.hasOwnProperty('a')); 29 assertTrue(proxy.hasOwnProperty('a')); 30 assertFalse(target.hasOwnProperty('b')); 31 assertTrue(proxy.hasOwnProperty('b')); 32 33 34 handler.getOwnPropertyDescriptor = function() { throw Error(); } 35 36 assertTrue(target.hasOwnProperty('a')); 37 assertThrows(function(){ proxy.hasOwnProperty('a') }, Error); 38 assertFalse(target.hasOwnProperty('b')); 39 assertThrows(function(){ proxy.hasOwnProperty('b') }, Error); 40
