OLD | NEW |
| (Empty) |
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 = { isExtensible: 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 = { isExtensible: true }; | |
43 var proxy = new Proxy(target, handler); | |
44 | |
45 assertThrows(() => {Reflect.isExtensible(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 var target = {}; | |
65 var handler = { isExtensible() {return 0} }; | |
66 var proxy = new Proxy(target, handler); | |
67 | |
68 // Trap returns falsish but target is extensible. | |
69 assertThrows(() => {Reflect.isExtensible(proxy)}, TypeError); | |
70 | |
71 // Trap returns falsish and target is not extensible. | |
72 Reflect.preventExtensions(target); | |
73 assertFalse(Reflect.isExtensible(proxy)); | |
74 })(); | |
OLD | NEW |