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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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