Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 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 | |
| 6 | function ID(x) { |
| 7 | return x; |
| 8 | } |
| 9 | |
| 10 | |
| 11 | |
| 12 | (function TestBasicsString() { |
| 13 | var object = { |
| 14 | a: 'A', |
| 15 | ['b']: 'B', |
| 16 | c: 'C', |
| 17 | [ID('d')]: 'D', |
| 18 | }; |
| 19 | assertEquals('A', object.a); |
| 20 | assertEquals('B', object.b); |
| 21 | assertEquals('C', object.c); |
| 22 | assertEquals('D', object.d); |
| 23 | assertArrayEquals(['a', 'b', 'c', 'd'], Object.keys(object)); |
| 24 | })(); |
| 25 | |
| 26 | |
| 27 | (function TestBasicsNumber() { |
| 28 | var object = { |
| 29 | a: 'A', |
| 30 | [1]: 'B', |
| 31 | c: 'C', |
| 32 | [ID(2)]: 'D', |
| 33 | }; |
| 34 | assertEquals('A', object.a); |
| 35 | assertEquals('B', object[1]); |
| 36 | assertEquals('C', object.c); |
| 37 | assertEquals('D', object[2]); |
| 38 | // Array indexes first. |
| 39 | assertArrayEquals(['1', '2', 'a', 'c'], Object.keys(object)); |
| 40 | })(); |
| 41 | |
| 42 | |
| 43 | (function TestBasicsSymbol() { |
| 44 | var sym1 = Symbol(); |
| 45 | var sym2 = Symbol(); |
| 46 | var object = { |
| 47 | a: 'A', |
| 48 | [sym1]: 'B', |
| 49 | c: 'C', |
| 50 | [ID(sym2)]: 'D', |
| 51 | }; |
| 52 | assertEquals('A', object.a); |
| 53 | assertEquals('B', object[sym1]); |
| 54 | assertEquals('C', object.c); |
| 55 | assertEquals('D', object[sym2]); |
| 56 | assertArrayEquals(['a', 'c'], Object.keys(object)); |
| 57 | assertArrayEquals([sym1, sym2], Object.getOwnPropertySymbols(object)); |
| 58 | })(); |
| 59 | |
| 60 | |
| 61 | (function TestToNameSideEffects() { |
| 62 | var counter = 0; |
| 63 | var key1 = { |
| 64 | toString: function() { |
| 65 | assertEquals(0, counter++); |
| 66 | return 'b'; |
| 67 | } |
| 68 | }; |
| 69 | var key2 = { |
| 70 | toString: function() { |
| 71 | assertEquals(1, counter++); |
| 72 | return 'd'; |
| 73 | } |
| 74 | }; |
| 75 | var object = { |
| 76 | a: 'A', |
| 77 | [key1]: 'B', |
| 78 | c: 'C', |
| 79 | [key2]: 'D', |
| 80 | }; |
| 81 | assertEquals(2, counter); |
| 82 | assertEquals('A', object.a); |
| 83 | assertEquals('B', object.b); |
| 84 | assertEquals('C', object.c); |
| 85 | assertEquals('D', object.d); |
| 86 | assertArrayEquals(['a', 'b', 'c', 'd'], Object.keys(object)); |
| 87 | })(); |
| 88 | |
| 89 | |
| 90 | (function TestToNameSideEffectsNumbers() { |
| 91 | var counter = 0; |
| 92 | var key1 = { |
| 93 | valueOf: function() { |
| 94 | assertEquals(0, counter++); |
| 95 | return 1; |
| 96 | }, |
| 97 | toString: null |
| 98 | }; |
| 99 | var key2 = { |
| 100 | valueOf: function() { |
| 101 | assertEquals(1, counter++); |
| 102 | return 2; |
| 103 | }, |
| 104 | toString: null |
| 105 | }; |
| 106 | |
| 107 | var object = { |
| 108 | a: 'A', |
| 109 | [key1]: 'B', |
| 110 | c: 'C', |
| 111 | [key2]: 'D', |
| 112 | }; |
| 113 | assertEquals(2, counter); |
| 114 | assertEquals('A', object.a); |
| 115 | assertEquals('B', object[1]); |
| 116 | assertEquals('C', object.c); |
| 117 | assertEquals('D', object[2]); |
| 118 | // Array indexes first. |
| 119 | assertArrayEquals(['1', '2', 'a', 'c'], Object.keys(object)); |
| 120 | })(); |
| 121 | |
| 122 | |
| 123 | (function TestDoubleName() { |
| 124 | var object = { |
| 125 | [1.2]: 'A', |
| 126 | [1e55]: 'B', |
| 127 | [0.000001]: 'C', |
| 128 | [-0]: 'D', |
| 129 | // TODO(arv): https://code.google.com/p/v8/issues/detail?id=3815 |
| 130 | // [Infinity]: 'E', |
| 131 | // [-Infinity]: 'F', |
| 132 | [NaN]: 'G', |
| 133 | }; |
| 134 | assertEquals('A', object['1.2']); |
| 135 | assertEquals('B', object['1e+55']); |
| 136 | assertEquals('C', object['0.000001']); |
| 137 | assertEquals('D', object[0]); |
| 138 | // TODO(arv): https://code.google.com/p/v8/issues/detail?id=3815 |
| 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 | object = { |
| 265 | ['__proto__']: proto |
| 266 | }; |
| 267 | assertEquals(Object.prototype, Object.getPrototypeOf(object)); |
| 268 | assertEquals(proto, object.__proto__); |
| 269 | assertTrue(object.hasOwnProperty('__proto__')); |
| 270 | |
| 271 | object = { |
| 272 | [ID('x')]: 'X', |
| 273 | __proto__: proto |
| 274 | }; |
| 275 | assertEquals('X', object.x); |
| 276 | assertEquals(proto, Object.getPrototypeOf(object)); |
| 277 | })(); |
| 278 | |
| 279 | |
| 280 | (function TestExceptionInName() { |
| 281 | function MyError() {}; |
| 282 | function throwMyError() { |
| 283 | throw new MyError(); |
| 284 | } |
| 285 | assertThrows(function() { |
| 286 | var o = { |
| 287 | [throwMyError()]: 42 |
| 288 | }; |
| 289 | }, MyError); |
| 290 | assertThrows(function() { |
| 291 | var o = { |
| 292 | get [throwMyError()]() { return 42; } |
| 293 | }; |
| 294 | }, MyError); |
| 295 | assertThrows(function() { |
| 296 | var o = { |
| 297 | set [throwMyError()](_) { } |
| 298 | }; |
| 299 | }, MyError); |
| 300 | })(); |
| 301 | |
| 302 | |
| 303 | (function TestNestedLiterals() { |
| 304 | var array = [ |
| 305 | 42, |
| 306 | { a: 'A', |
| 307 | ['b']: 'B', |
| 308 | c: 'C', |
| 309 | [ID('d')]: 'D', |
| 310 | }, |
| 311 | 43, |
| 312 | ]; |
| 313 | assertEquals(42, array[0]); |
| 314 | assertEquals(43, array[2]); |
| 315 | assertEquals('A', array[1].a); |
| 316 | assertEquals('B', array[1].b); |
| 317 | assertEquals('C', array[1].c); |
| 318 | assertEquals('D', array[1].d); |
| 319 | var object = { |
| 320 | outer: 42, |
| 321 | inner: { |
| 322 | a: 'A', |
| 323 | ['b']: 'B', |
| 324 | c: 'C', |
| 325 | [ID('d')]: 'D', |
| 326 | }, |
| 327 | outer2: 43, |
| 328 | }; |
| 329 | assertEquals(42, object.outer); |
| 330 | assertEquals(43, object.outer2); |
| 331 | assertEquals('A', object.inner.a); |
| 332 | assertEquals('B', object.inner.b); |
| 333 | assertEquals('C', object.inner.c); |
| 334 | assertEquals('D', object.inner.d); |
| 335 | var object = { |
| 336 | outer: 42, |
| 337 | array: [ |
| 338 | 43, |
| 339 | { a: 'A', |
| 340 | ['b']: 'B', |
| 341 | c: 'C', |
| 342 | [ID('d')]: 'D', |
| 343 | }, |
| 344 | 44, |
| 345 | ], |
| 346 | outer2: 45 |
| 347 | }; |
| 348 | assertEquals(42, object.outer); |
| 349 | assertEquals(45, object.outer2); |
| 350 | assertEquals(43, object.array[0]); |
| 351 | assertEquals(44, object.array[2]); |
| 352 | assertEquals('A', object.array[1].a); |
| 353 | assertEquals('B', object.array[1].b); |
| 354 | assertEquals('C', object.array[1].c); |
| 355 | assertEquals('D', object.array[1].d); |
| 356 | })(); |