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1 // Copyright 2015 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 // This file only tests very simple descriptors that always have | |
29 // configurable, enumerable, and writable set to true. | |
30 | |
31 // This is adapted from mjsunit/get-own-property-descriptor.js. | |
32 | |
33 // Flags: --harmony-reflect | |
34 | |
35 function get() { return x; } | |
36 function set(x) { this.x = x; } | |
37 | |
38 var obj = {x: 1}; | |
39 obj.__defineGetter__("accessor", get); | |
40 obj.__defineSetter__("accessor", set); | |
41 var a = new Array(); | |
42 a[1] = 42; | |
43 obj[1] = 42; | |
44 | |
45 var descIsData = Reflect.getOwnPropertyDescriptor(obj, 'x'); | |
46 assertTrue(descIsData.enumerable); | |
47 assertTrue(descIsData.writable); | |
48 assertTrue(descIsData.configurable); | |
49 | |
50 var descIsAccessor = Reflect.getOwnPropertyDescriptor(obj, 'accessor'); | |
51 assertTrue(descIsAccessor.enumerable); | |
52 assertTrue(descIsAccessor.configurable); | |
53 assertTrue(descIsAccessor.get == get); | |
54 assertTrue(descIsAccessor.set == set); | |
55 | |
56 var descIsNotData = Reflect.getOwnPropertyDescriptor(obj, 'not-x'); | |
57 assertTrue(descIsNotData == undefined); | |
58 | |
59 var descIsNotAccessor = Reflect.getOwnPropertyDescriptor(obj, 'not-accessor'); | |
60 assertTrue(descIsNotAccessor == undefined); | |
61 | |
62 var descArray = Reflect.getOwnPropertyDescriptor(a, '1'); | |
63 assertTrue(descArray.enumerable); | |
64 assertTrue(descArray.configurable); | |
65 assertTrue(descArray.writable); | |
66 assertEquals(descArray.value, 42); | |
67 | |
68 var descObjectElement = Reflect.getOwnPropertyDescriptor(obj, '1'); | |
69 assertTrue(descObjectElement.enumerable); | |
70 assertTrue(descObjectElement.configurable); | |
71 assertTrue(descObjectElement.writable); | |
72 assertEquals(descObjectElement.value, 42); | |
73 | |
74 // String objects. | |
75 var a = new String('foobar'); | |
76 for (var i = 0; i < a.length; i++) { | |
77 var descStringObject = Reflect.getOwnPropertyDescriptor(a, i); | |
78 assertTrue(descStringObject.enumerable); | |
79 assertFalse(descStringObject.configurable); | |
80 assertFalse(descStringObject.writable); | |
81 assertEquals(descStringObject.value, a.substring(i, i+1)); | |
82 } | |
83 | |
84 // Support for additional attributes on string objects. | |
85 a.x = 42; | |
86 a[10] = 'foo'; | |
87 var descStringProperty = Reflect.getOwnPropertyDescriptor(a, 'x'); | |
88 assertTrue(descStringProperty.enumerable); | |
89 assertTrue(descStringProperty.configurable); | |
90 assertTrue(descStringProperty.writable); | |
91 assertEquals(descStringProperty.value, 42); | |
92 | |
93 var descStringElement = Reflect.getOwnPropertyDescriptor(a, '10'); | |
94 assertTrue(descStringElement.enumerable); | |
95 assertTrue(descStringElement.configurable); | |
96 assertTrue(descStringElement.writable); | |
97 assertEquals(descStringElement.value, 'foo'); | |
98 | |
99 // Test that elements in the prototype chain is not returned. | |
100 var proto = {}; | |
101 proto[10] = 42; | |
102 | |
103 var objWithProto = new Array(); | |
104 objWithProto.prototype = proto; | |
105 objWithProto[0] = 'bar'; | |
106 var descWithProto = Reflect.getOwnPropertyDescriptor(objWithProto, '10'); | |
107 assertEquals(undefined, descWithProto); | |
108 | |
109 // Test elements on global proxy object. | |
110 var global = (function() { return this; })(); | |
111 | |
112 global[42] = 42; | |
113 | |
114 function el_getter() { return 239; }; | |
115 function el_setter() {}; | |
116 Object.defineProperty(global, '239', {get: el_getter, set: el_setter}); | |
117 | |
118 var descRegularElement = Reflect.getOwnPropertyDescriptor(global, '42'); | |
119 assertEquals(42, descRegularElement.value); | |
120 | |
121 var descAccessorElement = Reflect.getOwnPropertyDescriptor(global, '239'); | |
122 assertEquals(el_getter, descAccessorElement.get); | |
123 assertEquals(el_setter, descAccessorElement.set); | |
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