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1 // Copyright 2014 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 // Flags: --harmony-symbols | |
29 | |
30 | |
31 function getObjects() { | |
32 function func() {} | |
33 return [ | |
34 func, | |
35 new func(), | |
36 {x: 5}, | |
37 /regexp/, | |
38 ['array'], | |
39 // new Error(), | |
40 new Date(), | |
41 new Number(1), | |
42 new Boolean(true), | |
43 new String('str'), | |
44 Object(Symbol()) | |
45 ]; | |
46 } | |
47 | |
48 | |
49 var coercibleValues = [ | |
50 1, | |
51 true, | |
52 'string', | |
53 Symbol() | |
54 ]; | |
55 | |
56 | |
57 var nonCoercibleValues = [ | |
58 undefined, | |
59 null | |
60 ]; | |
61 | |
62 | |
63 var valuesWithoutNull = coercibleValues.concat(undefined); | |
64 | |
65 | |
66 function TestSetPrototypeOfCoercibleValues() { | |
67 for (var i = 0; i < coercibleValues.length; i++) { | |
68 var value = coercibleValues[i]; | |
69 assertThrows(function() { | |
70 Object.getPrototypeOf(value); | |
71 }, TypeError); | |
72 | |
73 assertEquals(Object.setPrototypeOf(value, {}), value); | |
74 | |
75 assertThrows(function() { | |
76 Object.getPrototypeOf(value); | |
77 }, TypeError); | |
78 } | |
79 } | |
80 TestSetPrototypeOfCoercibleValues(); | |
81 | |
82 | |
83 function TestSetPrototypeOfNonCoercibleValues() { | |
84 for (var i = 0; i < nonCoercibleValues.length; i++) { | |
85 var value = nonCoercibleValues[i]; | |
86 assertThrows(function() { | |
87 Object.setPrototypeOf(value, {}); | |
88 }, TypeError); | |
89 } | |
90 } | |
91 TestSetPrototypeOfNonCoercibleValues(); | |
92 | |
93 | |
94 function TestSetPrototypeToNonObject(proto) { | |
95 var objects = getObjects(); | |
96 for (var i = 0; i < objects.length; i++) { | |
97 var object = objects[i]; | |
98 for (var j = 0; j < valuesWithoutNull.length; j++) { | |
99 var proto = valuesWithoutNull[j]; | |
100 assertThrows(function() { | |
101 Object.setPrototypeOf(object, proto); | |
102 }, TypeError); | |
103 } | |
104 } | |
105 } | |
106 TestSetPrototypeToNonObject(); | |
107 | |
108 | |
109 function TestSetPrototypeOf(object, proto) { | |
110 assertEquals(Object.setPrototypeOf(object, proto), object); | |
111 assertEquals(Object.getPrototypeOf(object), proto); | |
112 } | |
113 | |
114 | |
115 function TestSetPrototypeOfForObjects() { | |
116 var objects1 = getObjects(); | |
117 var objects2 = getObjects(); | |
118 for (var i = 0; i < objects1.length; i++) { | |
119 for (var j = 0; j < objects2.length; j++) { | |
120 TestSetPrototypeOf(objects1[i], objects2[j]); | |
121 } | |
122 } | |
123 } | |
124 TestSetPrototypeOfForObjects(); | |
125 | |
126 | |
127 function TestSetPrototypeToNull() { | |
128 var objects = getObjects(); | |
129 for (var i = 0; i < objects.length; i++) { | |
130 TestSetPrototypeOf(objects[i], null); | |
131 } | |
132 } | |
133 TestSetPrototypeToNull(); | |
134 | |
135 | |
136 function TestSetPrototypeOfNonExtensibleObject() { | |
137 var objects = getObjects(); | |
138 var proto = {}; | |
139 for (var i = 0; i < objects.length; i++) { | |
140 var object = objects[i]; | |
141 Object.preventExtensions(object); | |
142 assertThrows(function() { | |
143 Object.setPrototypeOf(object, proto); | |
144 }, TypeError); | |
145 } | |
146 } | |
147 TestSetPrototypeOfNonExtensibleObject(); | |
148 | |
149 | |
150 function TestLookup() { | |
151 var object = {}; | |
152 assertFalse('x' in object); | |
153 assertFalse('y' in object); | |
154 | |
155 var oldProto = { | |
156 x: 'old x', | |
157 y: 'old y' | |
158 }; | |
159 Object.setPrototypeOf(object, oldProto); | |
160 assertEquals(object.x, 'old x'); | |
161 assertEquals(object.y, 'old y'); | |
162 | |
163 var newProto = { | |
164 x: 'new x' | |
165 }; | |
166 Object.setPrototypeOf(object, newProto); | |
167 assertEquals(object.x, 'new x'); | |
168 assertFalse('y' in object); | |
169 } | |
170 TestLookup(); | |
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