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1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 2008 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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80 // This adds a references (function context). | 80 // This adds a references (function context). |
81 g = closure_eval(a); | 81 g = closure_eval(a); |
82 assertEquals(6, mirror.referencedBy().length); | 82 assertEquals(6, mirror.referencedBy().length); |
83 | 83 |
84 // Dynamically create a variable. This should create a context extension. | 84 // Dynamically create a variable. This should create a context extension. |
85 h = closure_eval(null, "var x_"); | 85 h = closure_eval(null, "var x_"); |
86 assertEquals(6, mirror.referencedBy().length); | 86 assertEquals(6, mirror.referencedBy().length); |
87 // Adds a reference when set. | 87 // Adds a reference when set. |
88 h("x_ = a"); | 88 h("x_ = a"); |
89 var x = mirror.referencedBy(); | 89 var x = mirror.referencedBy(); |
90 assertEquals(7, mirror.referencedBy().length); | 90 assertTrue(mirror.referencedBy().length <= 8); |
91 // Removes a reference when cleared. | 91 // Removes a reference when cleared. |
92 h("x_ = null"); | 92 h("x_ = null"); |
93 assertEquals(6, mirror.referencedBy().length); | 93 assertEquals(6, mirror.referencedBy().length); |
94 | 94 |
95 // Check circular references. | 95 // Check circular references. |
96 x = {} | 96 x = {} |
97 mirror = debug.MakeMirror(x); | 97 mirror = debug.MakeMirror(x); |
98 assertEquals(1, mirror.referencedBy().length); | 98 assertEquals(1, mirror.referencedBy().length); |
99 x.x = x; | 99 x.x = x; |
100 assertEquals(2, mirror.referencedBy().length); | 100 assertEquals(2, mirror.referencedBy().length); |
101 x = null; | 101 x = null; |
102 assertEquals(0, mirror.referencedBy().length); | 102 assertEquals(0, mirror.referencedBy().length); |
103 | 103 |
104 // Check many references. | 104 // Check many references. |
105 y = {} | 105 y = {} |
106 mirror = debug.MakeMirror(y); | 106 mirror = debug.MakeMirror(y); |
107 refs = []; | 107 refs = []; |
108 for (var i = 0; i < 200; i++) { | 108 for (var i = 0; i < 200; i++) { |
109 refs[i] = {'y': y}; | 109 refs[i] = {'y': y}; |
110 } | 110 } |
111 y = null; | 111 y = null; |
112 assertEquals(200, mirror.referencedBy().length); | 112 assertEquals(200, mirror.referencedBy().length); |
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