OLD | NEW |
(Empty) | |
| 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 |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Flags: --harmony-computed-property-names |
| 6 |
| 7 |
| 8 function ID(x) { |
| 9 return x; |
| 10 } |
| 11 |
| 12 |
| 13 |
| 14 (function TestBasicsString() { |
| 15 var object = { |
| 16 a: 'A', |
| 17 ['b']: 'B', |
| 18 c: 'C', |
| 19 [ID('d')]: 'D', |
| 20 }; |
| 21 assertEquals('A', object.a); |
| 22 assertEquals('B', object.b); |
| 23 assertEquals('C', object.c); |
| 24 assertEquals('D', object.d); |
| 25 assertArrayEquals(['a', 'b', 'c', 'd'], Object.keys(object)); |
| 26 })(); |
| 27 |
| 28 |
| 29 (function TestBasicsNumber() { |
| 30 var object = { |
| 31 a: 'A', |
| 32 [1]: 'B', |
| 33 c: 'C', |
| 34 [ID(2)]: 'D', |
| 35 }; |
| 36 assertEquals('A', object.a); |
| 37 assertEquals('B', object[1]); |
| 38 assertEquals('C', object.c); |
| 39 assertEquals('D', object[2]); |
| 40 // Array indexes first. |
| 41 assertArrayEquals(['1', '2', 'a', 'c'], Object.keys(object)); |
| 42 })(); |
| 43 |
| 44 |
| 45 (function TestBasicsSymbol() { |
| 46 var sym1 = Symbol(); |
| 47 var sym2 = Symbol(); |
| 48 var object = { |
| 49 a: 'A', |
| 50 [sym1]: 'B', |
| 51 c: 'C', |
| 52 [ID(sym2)]: 'D', |
| 53 }; |
| 54 assertEquals('A', object.a); |
| 55 assertEquals('B', object[sym1]); |
| 56 assertEquals('C', object.c); |
| 57 assertEquals('D', object[sym2]); |
| 58 assertArrayEquals(['a', 'c'], Object.keys(object)); |
| 59 assertArrayEquals([sym1, sym2], Object.getOwnPropertySymbols(object)); |
| 60 })(); |
| 61 |
| 62 |
| 63 (function TestToNameSideEffects() { |
| 64 var counter = 0; |
| 65 var key1 = { |
| 66 toString: function() { |
| 67 assertEquals(0, counter++); |
| 68 return 'b'; |
| 69 } |
| 70 }; |
| 71 var key2 = { |
| 72 toString: function() { |
| 73 assertEquals(1, counter++); |
| 74 return 'd'; |
| 75 } |
| 76 }; |
| 77 var object = { |
| 78 a: 'A', |
| 79 [key1]: 'B', |
| 80 c: 'C', |
| 81 [key2]: 'D', |
| 82 }; |
| 83 assertEquals(2, counter); |
| 84 assertEquals('A', object.a); |
| 85 assertEquals('B', object.b); |
| 86 assertEquals('C', object.c); |
| 87 assertEquals('D', object.d); |
| 88 assertArrayEquals(['a', 'b', 'c', 'd'], Object.keys(object)); |
| 89 })(); |
| 90 |
| 91 |
| 92 (function TestToNameSideEffectsNumbers() { |
| 93 var counter = 0; |
| 94 var key1 = { |
| 95 valueOf: function() { |
| 96 assertEquals(0, counter++); |
| 97 return 1; |
| 98 }, |
| 99 toString: null |
| 100 }; |
| 101 var key2 = { |
| 102 valueOf: function() { |
| 103 assertEquals(1, counter++); |
| 104 return 2; |
| 105 }, |
| 106 toString: null |
| 107 }; |
| 108 |
| 109 var object = { |
| 110 a: 'A', |
| 111 [key1]: 'B', |
| 112 c: 'C', |
| 113 [key2]: 'D', |
| 114 }; |
| 115 assertEquals(2, counter); |
| 116 assertEquals('A', object.a); |
| 117 assertEquals('B', object[1]); |
| 118 assertEquals('C', object.c); |
| 119 assertEquals('D', object[2]); |
| 120 // Array indexes first. |
| 121 assertArrayEquals(['1', '2', 'a', 'c'], Object.keys(object)); |
| 122 })(); |
| 123 |
| 124 |
| 125 (function TestDoubleName() { |
| 126 var object = { |
| 127 [1.2]: 'A', |
| 128 [1e55]: 'B', |
| 129 [0.000001]: 'C', |
| 130 [-0]: 'D', |
| 131 [Infinity]: 'E', |
| 132 [-Infinity]: 'F', |
| 133 [NaN]: 'G', |
| 134 }; |
| 135 assertEquals('A', object['1.2']); |
| 136 assertEquals('B', object['1e+55']); |
| 137 assertEquals('C', object['0.000001']); |
| 138 assertEquals('D', object[0]); |
| 139 assertEquals('E', object[Infinity]); |
| 140 assertEquals('F', object[-Infinity]); |
| 141 assertEquals('G', object[NaN]); |
| 142 })(); |
| 143 |
| 144 |
| 145 (function TestGetter() { |
| 146 var object = { |
| 147 get ['a']() { |
| 148 return 'A'; |
| 149 } |
| 150 }; |
| 151 assertEquals('A', object.a); |
| 152 |
| 153 object = { |
| 154 get b() { |
| 155 assertUnreachable(); |
| 156 }, |
| 157 get ['b']() { |
| 158 return 'B'; |
| 159 } |
| 160 }; |
| 161 assertEquals('B', object.b); |
| 162 |
| 163 object = { |
| 164 get c() { |
| 165 assertUnreachable(); |
| 166 }, |
| 167 get ['c']() { |
| 168 assertUnreachable(); |
| 169 }, |
| 170 get ['c']() { |
| 171 return 'C'; |
| 172 } |
| 173 }; |
| 174 assertEquals('C', object.c); |
| 175 |
| 176 object = { |
| 177 get ['d']() { |
| 178 assertUnreachable(); |
| 179 }, |
| 180 get d() { |
| 181 return 'D'; |
| 182 } |
| 183 }; |
| 184 assertEquals('D', object.d); |
| 185 })(); |
| 186 |
| 187 |
| 188 (function TestSetter() { |
| 189 var calls = 0; |
| 190 var object = { |
| 191 set ['a'](_) { |
| 192 calls++; |
| 193 } |
| 194 }; |
| 195 object.a = 'A'; |
| 196 assertEquals(1, calls); |
| 197 |
| 198 calls = 0; |
| 199 object = { |
| 200 set b(_) { |
| 201 assertUnreachable(); |
| 202 }, |
| 203 set ['b'](_) { |
| 204 calls++; |
| 205 } |
| 206 }; |
| 207 object.b = 'B'; |
| 208 assertEquals(1, calls); |
| 209 |
| 210 calls = 0; |
| 211 object = { |
| 212 set c(_) { |
| 213 assertUnreachable() |
| 214 }, |
| 215 set ['c'](_) { |
| 216 assertUnreachable() |
| 217 }, |
| 218 set ['c'](_) { |
| 219 calls++ |
| 220 } |
| 221 }; |
| 222 object.c = 'C'; |
| 223 assertEquals(1, calls); |
| 224 |
| 225 calls = 0; |
| 226 object = { |
| 227 set ['d'](_) { |
| 228 assertUnreachable() |
| 229 }, |
| 230 set d(_) { |
| 231 calls++ |
| 232 } |
| 233 }; |
| 234 object.d = 'D'; |
| 235 assertEquals(1, calls); |
| 236 })(); |
| 237 |
| 238 |
| 239 (function TestDuplicateKeys() { |
| 240 'use strict'; |
| 241 // ES5 does not allow duplicate keys. |
| 242 // ES6 does but we haven't changed our code yet. |
| 243 |
| 244 var object = { |
| 245 a: 1, |
| 246 ['a']: 2, |
| 247 }; |
| 248 assertEquals(2, object.a); |
| 249 })(); |
| 250 |
| 251 |
| 252 (function TestProto() { |
| 253 var proto = {}; |
| 254 var object = { |
| 255 __proto__: proto |
| 256 }; |
| 257 assertEquals(proto, Object.getPrototypeOf(object)); |
| 258 |
| 259 object = { |
| 260 '__proto__': proto |
| 261 }; |
| 262 assertEquals(proto, Object.getPrototypeOf(object)); |
| 263 |
| 264 var object = { |
| 265 ['__proto__']: proto |
| 266 }; |
| 267 assertEquals(Object.prototype, Object.getPrototypeOf(object)); |
| 268 assertEquals(proto, object.__proto__); |
| 269 assertTrue(object.hasOwnProperty('__proto__')); |
| 270 })(); |
OLD | NEW |