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Side by Side Diff: test/mjsunit/harmony/proxies-construct.js

Issue 1815773002: Remove runtime flags for Proxy and Reflect (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Rebased Created 4 years, 9 months ago
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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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