OLD | NEW |
1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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 |
(...skipping 15 matching lines...) Expand all Loading... |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 // Tests the Object.preventExtensions method - ES 15.2.3.10 | 28 // Tests the Object.preventExtensions method - ES 15.2.3.10 |
29 | 29 |
30 | 30 |
31 var obj1 = {}; | 31 var obj1 = {}; |
32 // Extensible defaults to true. | 32 // Extensible defaults to true. |
33 assertTrue(Object.isExtensible(obj1)); | 33 assertTrue(Object.isExtensible(obj1)); |
34 Object.preventExtensions(obj1); | 34 Object.preventExtensions(obj1); |
35 | 35 |
36 // Make sure the is_extensible flag is set. | 36 // Make sure the is_extensible flag is set. |
37 assertFalse(Object.isExtensible(obj1)); | 37 assertFalse(Object.isExtensible(obj1)); |
38 obj1.x = 42; | 38 obj1.x = 42; |
39 assertEquals(undefined, obj1.x); | 39 assertEquals(undefined, obj1.x); |
40 | 40 |
41 // Try adding a new element. | 41 // Try adding a new element. |
42 obj1[1] = 42; | 42 obj1[1] = 42; |
43 assertEquals(undefined, obj1[1]); | 43 assertEquals(undefined, obj1[1]); |
44 | 44 |
45 | 45 |
46 // Try when the object has an existing property. | 46 // Try when the object has an existing property. |
(...skipping 60 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
107 | 107 |
108 // Test that attributes on functions are also handled correctly. | 108 // Test that attributes on functions are also handled correctly. |
109 function foo() { | 109 function foo() { |
110 return 42; | 110 return 42; |
111 } | 111 } |
112 | 112 |
113 Object.preventExtensions(foo); | 113 Object.preventExtensions(foo); |
114 | 114 |
115 foo.x = 29; | 115 foo.x = 29; |
116 assertEquals(undefined, foo.x); | 116 assertEquals(undefined, foo.x); |
OLD | NEW |