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| 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 --harmony-reflect |
| 6 |
| 7 (function testNonConstructable() { |
| 8 var proxy = new Proxy({},{}); |
| 9 assertThrows(function(){ new proxy() }, TypeError); |
| 10 |
| 11 var proxy2 = new Proxy(proxy, {}); |
| 12 assertThrows(function(){ proxy2() }, TypeError); |
| 13 })(); |
| 14 |
| 15 (function testFailingConstructRevoked() { |
| 16 var pair = Proxy.revocable(Array, {}); |
| 17 var instance = new pair.proxy(); |
| 18 pair.revoke(); |
| 19 assertThrows(function(){ new pair.proxy() }, TypeError); |
| 20 })(); |
| 21 |
| 22 (function testFailingGetTrap() { |
| 23 var handler = { |
| 24 get() { |
| 25 throw TypeError(); |
| 26 } |
| 27 } |
| 28 var proxy = new Proxy({},{}); |
| 29 var proxy2 = new Proxy({}, proxy); |
| 30 assertThrows(function(){ new proxy2() }, TypeError); |
| 31 })(); |
| 32 |
| 33 (function testConstructFallback() { |
| 34 var called = false; |
| 35 function Target() { |
| 36 called = true; |
| 37 this.property1 = 'value1'; |
| 38 }; |
| 39 Target.prototype = {}; |
| 40 var proxy = new Proxy(Target, {}); |
| 41 |
| 42 assertFalse(called); |
| 43 var instance = new proxy(); |
| 44 assertTrue(called); |
| 45 assertEquals('value1', instance.property1); |
| 46 assertSame(Target.prototype, Reflect.getPrototypeOf(instance)); |
| 47 |
| 48 var proxy2 = new Proxy(proxy, {}); |
| 49 called = false; |
| 50 var instance2 = new proxy2(); |
| 51 assertTrue(called); |
| 52 assertEquals('value1', instance2.property1); |
| 53 assertSame(Target.prototype, Reflect.getPrototypeOf(instance)); |
| 54 })(); |
| 55 |
| 56 (function testConstructTrapDirectReturn() { |
| 57 function Target(a, b) { |
| 58 this.sum = a + b; |
| 59 }; |
| 60 var handler = { |
| 61 construct(t, c, args) { |
| 62 return { sum: 42 }; |
| 63 } |
| 64 }; |
| 65 var proxy = new Proxy(Target, handler); |
| 66 assertEquals(42, (new proxy(1, 2)).sum); |
| 67 })(); |
| 68 |
| 69 (function testConstructTrap() { |
| 70 function Target(arg1, arg2) { |
| 71 this.arg1 = arg1; |
| 72 this.arg2 = arg2; |
| 73 } |
| 74 var seen_target, seen_arguments, seen_new_target; |
| 75 var handler = { |
| 76 construct(target, args, new_target) { |
| 77 seen_target = target; |
| 78 seen_arguments = args; |
| 79 seen_new_target = new_target; |
| 80 return Reflect.construct(target, args, new_target); |
| 81 } |
| 82 } |
| 83 var proxy = new Proxy(Target, handler); |
| 84 var instance = new proxy('a', 'b'); |
| 85 assertEquals(Target, seen_target); |
| 86 assertEquals(['a','b'], seen_arguments); |
| 87 assertEquals(proxy, seen_new_target); |
| 88 assertEquals('a', instance.arg1); |
| 89 assertEquals('b', instance.arg2); |
| 90 |
| 91 var instance2 = Reflect.construct(proxy, ['a1', 'b1'], Array); |
| 92 assertEquals(Target, seen_target); |
| 93 assertEquals(['a1', 'b1'], seen_arguments); |
| 94 assertEquals(Array, seen_new_target); |
| 95 assertEquals('a1', instance2.arg1); |
| 96 assertEquals('b1', instance2.arg2); |
| 97 })(); |
| 98 |
| 99 (function testConstructCrossRealm() { |
| 100 var realm1 = Realm.create(); |
| 101 var handler = { |
| 102 construct(target, args, new_target) { |
| 103 return args; |
| 104 } |
| 105 }; |
| 106 var OtherProxy = Realm.eval(realm1, "Proxy"); |
| 107 var otherArrayPrototype = Realm.eval(realm1, 'Array.prototype'); |
| 108 |
| 109 // Proxy and handler are from this realm. |
| 110 var proxy = new Proxy(Array, handler); |
| 111 var result = new proxy(); |
| 112 assertSame(Array.prototype, Reflect.getPrototypeOf(result)); |
| 113 |
| 114 // Proxy is from this realm, handler is from realm1. |
| 115 var otherProxy = new OtherProxy(Array, handler); |
| 116 var otherResult = new otherProxy(); |
| 117 assertSame(Array.prototype, Reflect.getPrototypeOf(otherResult)); |
| 118 |
| 119 // Proxy and handler are from realm1. |
| 120 var otherProxy2 = Realm.eval(realm1, 'new Proxy('+ |
| 121 'Array, { construct(target, args, new_target) { return args }} )'); |
| 122 var otherResult2 = new otherProxy2(); |
| 123 assertSame(Array.prototype, Reflect.getPrototypeOf(otherResult2)); |
| 124 })(); |
| 125 |
| 126 (function testReflectConstructCrossReal() { |
| 127 var realm1 = Realm.create(); |
| 128 var realm2 = Realm.create(); |
| 129 var realm3 = Realm.create(); |
| 130 var realm4 = Realm.create(); |
| 131 |
| 132 var argsRealm1 = Realm.eval(realm1, '[]'); |
| 133 var ProxyRealm2 = Realm.eval(realm2, 'Proxy'); |
| 134 var constructorRealm3 = Realm.eval(realm3, '(function(){})'); |
| 135 var handlerRealm4 = Realm.eval(realm4, |
| 136 '({ construct(target, args, new_target) {return args} })'); |
| 137 |
| 138 var proxy = new ProxyRealm2(constructorRealm3, handlerRealm4); |
| 139 |
| 140 // Check that the arguments array returned by handlerRealm4 is created in the |
| 141 // realm of the Reflect.construct function. |
| 142 var result = Reflect.construct(proxy, argsRealm1); |
| 143 assertSame(Array.prototype, Reflect.getPrototypeOf(result)); |
| 144 |
| 145 var ReflectConstructRealm1 = Realm.eval(realm1, 'Reflect.construct'); |
| 146 var result2 = ReflectConstructRealm1(proxy, argsRealm1); |
| 147 assertSame(Realm.eval(realm1, 'Array.prototype'), |
| 148 Reflect.getPrototypeOf(result2)); |
| 149 |
| 150 var result3 = ReflectConstructRealm1(proxy, []); |
| 151 assertSame(Realm.eval(realm1, 'Array.prototype'), |
| 152 Reflect.getPrototypeOf(result3)); |
| 153 |
| 154 var ReflectConstructRealm2 = Realm.eval(realm2, 'Reflect.construct'); |
| 155 var result4 = ReflectConstructRealm2(proxy, argsRealm1); |
| 156 assertSame(Realm.eval(realm2, 'Array.prototype'), |
| 157 Reflect.getPrototypeOf(result4)); |
| 158 })(); |
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