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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Flags: --harmony-tostring | 5 // Flags: --harmony-tostring |
6 | 6 |
7 var global = this; | 7 var global = this; |
8 | 8 |
9 var funs = { | 9 var funs = { |
10 Object: [ Object ], | 10 Object: [ Object ], |
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26 Array.prototype.toString.call(funs[f][i]), | 26 Array.prototype.toString.call(funs[f][i]), |
27 funs[f][i]); | 27 funs[f][i]); |
28 } | 28 } |
29 } | 29 } |
30 | 30 |
31 | 31 |
32 function testToStringTag(className) { | 32 function testToStringTag(className) { |
33 // Using builtin toStringTags | 33 // Using builtin toStringTags |
34 var obj = {}; | 34 var obj = {}; |
35 obj[Symbol.toStringTag] = className; | 35 obj[Symbol.toStringTag] = className; |
36 assertEquals("[object ~" + className + "]", | 36 assertEquals("[object " + className + "]", |
37 Array.prototype.toString.call(obj)); | 37 Array.prototype.toString.call(obj)); |
38 | 38 |
39 // Getter throws | 39 // Getter throws |
40 obj = {}; | 40 obj = {}; |
41 Object.defineProperty(obj, Symbol.toStringTag, { | 41 Object.defineProperty(obj, Symbol.toStringTag, { |
42 get: function() { throw className; } | 42 get: function() { throw className; } |
43 }); | 43 }); |
44 assertThrows(function() { | 44 assertThrows(function() { |
45 Array.prototype.toString.call(obj); | 45 Array.prototype.toString.call(obj); |
46 }, className); | 46 }, className); |
47 | 47 |
48 // Getter does not throw | 48 // Getter does not throw |
49 obj = {}; | 49 obj = {}; |
50 Object.defineProperty(obj, Symbol.toStringTag, { | 50 Object.defineProperty(obj, Symbol.toStringTag, { |
51 get: function() { return className; } | 51 get: function() { return className; } |
52 }); | 52 }); |
53 assertEquals("[object ~" + className + "]", | 53 assertEquals("[object " + className + "]", |
54 Array.prototype.toString.call(obj)); | 54 Array.prototype.toString.call(obj)); |
55 | 55 |
56 // Custom, non-builtin toStringTags | 56 // Custom, non-builtin toStringTags |
57 obj = {}; | 57 obj = {}; |
58 obj[Symbol.toStringTag] = "X" + className; | 58 obj[Symbol.toStringTag] = "X" + className; |
59 assertEquals("[object X" + className + "]", | 59 assertEquals("[object X" + className + "]", |
60 Array.prototype.toString.call(obj)); | 60 Array.prototype.toString.call(obj)); |
61 | 61 |
62 // With getter | 62 // With getter |
63 obj = {}; | 63 obj = {}; |
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93 "Function", | 93 "Function", |
94 "Number", | 94 "Number", |
95 "RegExp", | 95 "RegExp", |
96 "String" | 96 "String" |
97 ].forEach(testToStringTag); | 97 ].forEach(testToStringTag); |
98 | 98 |
99 | 99 |
100 function testToStringTagNonString(value) { | 100 function testToStringTagNonString(value) { |
101 var obj = {}; | 101 var obj = {}; |
102 obj[Symbol.toStringTag] = value; | 102 obj[Symbol.toStringTag] = value; |
103 assertEquals("[object ???]", Array.prototype.toString.call(obj)); | 103 assertEquals("[object Object]", Array.prototype.toString.call(obj)); |
104 | 104 |
105 // With getter | 105 // With getter |
106 obj = {}; | 106 obj = {}; |
107 Object.defineProperty(obj, Symbol.toStringTag, { | 107 Object.defineProperty(obj, Symbol.toStringTag, { |
108 get: function() { return value; } | 108 get: function() { return value; } |
109 }); | 109 }); |
110 assertEquals("[object ???]", Array.prototype.toString.call(obj)); | 110 assertEquals("[object Object]", Array.prototype.toString.call(obj)); |
111 } | 111 } |
112 | 112 |
113 | 113 |
114 [ | 114 [ |
115 null, | 115 null, |
116 function() {}, | 116 function() {}, |
117 [], | 117 [], |
118 {}, | 118 {}, |
119 /regexp/, | 119 /regexp/, |
120 42, | 120 42, |
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131 var desc = Object.getOwnPropertyDescriptor(Object.prototype, "toString"); | 131 var desc = Object.getOwnPropertyDescriptor(Object.prototype, "toString"); |
132 assertTrue(desc.writable); | 132 assertTrue(desc.writable); |
133 assertFalse(desc.enumerable); | 133 assertFalse(desc.enumerable); |
134 assertTrue(desc.configurable); | 134 assertTrue(desc.configurable); |
135 } | 135 } |
136 testArrayToStringPropertyDesc(); | 136 testArrayToStringPropertyDesc(); |
137 | 137 |
138 | 138 |
139 function testArrayToStringOwnNonStringValue() { | 139 function testArrayToStringOwnNonStringValue() { |
140 var obj = Object.defineProperty({}, Symbol.toStringTag, { value: 1 }); | 140 var obj = Object.defineProperty({}, Symbol.toStringTag, { value: 1 }); |
141 assertEquals("[object ???]", ([]).toString.call(obj)); | 141 assertEquals("[object Object]", ([]).toString.call(obj)); |
142 } | 142 } |
143 testArrayToStringOwnNonStringValue(); | 143 testArrayToStringOwnNonStringValue(); |
144 | 144 |
145 | 145 |
146 function testArrayToStringBasic() { | 146 function testArrayToStringBasic() { |
147 assertEquals("1,2,3", [1,2,3].toString()); | 147 assertEquals("1,2,3", [1,2,3].toString()); |
148 assertEquals(",,3", [,,3].toString()); | 148 assertEquals(",,3", [,,3].toString()); |
149 } | 149 } |
150 testArrayToStringBasic(); | 150 testArrayToStringBasic(); |
151 | 151 |
152 | 152 |
153 function testArrayToStringObjectWithCallableJoin() { | 153 function testArrayToStringObjectWithCallableJoin() { |
154 var obj = { join: function() { return "CallableJoin"; } }; | 154 var obj = { join: function() { return "CallableJoin"; } }; |
155 assertEquals("CallableJoin", Array.prototype.toString.call(obj)); | 155 assertEquals("CallableJoin", Array.prototype.toString.call(obj)); |
156 } | 156 } |
157 testArrayToStringObjectWithCallableJoin(); | 157 testArrayToStringObjectWithCallableJoin(); |
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