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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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124 } | 124 } |
125 TestSetPrototypeToNull(); | 125 TestSetPrototypeToNull(); |
126 | 126 |
127 | 127 |
128 function TestSetPrototypeOfNonExtensibleObject() { | 128 function TestSetPrototypeOfNonExtensibleObject() { |
129 var objects = getObjects(); | 129 var objects = getObjects(); |
130 var proto = {}; | 130 var proto = {}; |
131 for (var i = 0; i < objects.length; i++) { | 131 for (var i = 0; i < objects.length; i++) { |
132 var object = objects[i]; | 132 var object = objects[i]; |
133 Object.preventExtensions(object); | 133 Object.preventExtensions(object); |
| 134 // Setting the current prototype must succeed. |
| 135 Object.setPrototypeOf(object, Object.getPrototypeOf(object)); |
| 136 // Setting any other must fail. |
134 assertThrows(function() { | 137 assertThrows(function() { |
135 Object.setPrototypeOf(object, proto); | 138 Object.setPrototypeOf(object, proto); |
136 }, TypeError); | 139 }, TypeError); |
137 } | 140 } |
138 } | 141 } |
139 TestSetPrototypeOfNonExtensibleObject(); | 142 TestSetPrototypeOfNonExtensibleObject(); |
140 | 143 |
141 | 144 |
142 function TestSetPrototypeCyclic() { | 145 function TestSetPrototypeCyclic() { |
143 var objects = [ | 146 var objects = [ |
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171 assertEquals(object.y, 'old y'); | 174 assertEquals(object.y, 'old y'); |
172 | 175 |
173 var newProto = { | 176 var newProto = { |
174 x: 'new x' | 177 x: 'new x' |
175 }; | 178 }; |
176 Object.setPrototypeOf(object, newProto); | 179 Object.setPrototypeOf(object, newProto); |
177 assertEquals(object.x, 'new x'); | 180 assertEquals(object.x, 'new x'); |
178 assertFalse('y' in object); | 181 assertFalse('y' in object); |
179 } | 182 } |
180 TestLookup(); | 183 TestLookup(); |
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