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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 | |
8 (function () { | |
9 // No trap. | |
10 | |
11 var target = {}; | |
12 var handler = {}; | |
13 var proxy = new Proxy(target, handler); | |
14 | |
15 assertTrue(Reflect.isExtensible(target)); | |
16 assertTrue(Reflect.isExtensible(proxy)); | |
17 assertTrue(Reflect.preventExtensions(proxy)); | |
18 assertFalse(Reflect.isExtensible(target)); | |
19 assertFalse(Reflect.isExtensible(proxy)); | |
20 })(); | |
21 | |
22 | |
23 (function () { | |
24 // "Undefined" trap. | |
25 | |
26 var target = {}; | |
27 var handler = { preventExtensions: null }; | |
28 var proxy = new Proxy(target, handler); | |
29 | |
30 assertTrue(Reflect.isExtensible(target)); | |
31 assertTrue(Reflect.isExtensible(proxy)); | |
32 assertTrue(Reflect.preventExtensions(proxy)); | |
33 assertFalse(Reflect.isExtensible(target)); | |
34 assertFalse(Reflect.isExtensible(proxy)); | |
35 })(); | |
36 | |
37 | |
38 (function () { | |
39 // Invalid trap. | |
40 | |
41 var target = {}; | |
42 var handler = { preventExtensions: 42 }; | |
43 var proxy = new Proxy(target, handler); | |
44 | |
45 assertThrows(() => {Reflect.preventExtensions(proxy)}, TypeError); | |
46 })(); | |
47 | |
48 | |
49 (function () { | |
50 var target = {}; | |
51 var handler = { isExtensible() {return "bla"} }; | |
52 var proxy = new Proxy(target, handler); | |
53 | |
54 // Trap returns trueish and target is extensible. | |
55 assertTrue(Reflect.isExtensible(proxy)); | |
56 | |
57 // Trap returns trueish but target is not extensible. | |
58 Reflect.preventExtensions(target); | |
59 assertThrows(() => {Reflect.isExtensible(proxy)}, TypeError); | |
60 })(); | |
61 | |
62 | |
63 (function () { | |
64 // Trap returns falsish. | |
65 | |
66 var target = {}; | |
67 var handler = { preventExtensions() {return 0} }; | |
68 var proxy = new Proxy(target, handler); | |
69 | |
70 assertFalse(Reflect.preventExtensions(proxy)); | |
71 Reflect.preventExtensions(target); | |
72 assertFalse(Reflect.preventExtensions(proxy)); | |
73 })(); | |
74 | |
75 | |
76 (function () { | |
77 var target = {}; | |
78 var handler = { preventExtensions() {return Symbol()} }; | |
79 var proxy = new Proxy(target, handler); | |
80 | |
81 // Trap returns trueish but target is extensible. | |
82 assertThrows(() => {Reflect.preventExtensions(proxy)}, TypeError); | |
83 | |
84 // Trap returns trueish and target is not extensible. | |
85 Reflect.preventExtensions(target); | |
86 assertTrue(Reflect.preventExtensions(proxy)); | |
87 })(); | |
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