Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2012-2015 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | // Tests the Reflect.defineProperty method - ES6 26.1.3 |
| 29 | // This is adapted from mjsunit/object-define-property.js. |
| 30 | |
| 31 | // Flags: --allow-natives-syntax --harmony-reflect |
| 32 | |
| 33 | |
| 34 | // Check that an exception is thrown when null is passed as object. |
| 35 | var exception = false; |
| 36 | try { |
| 37 | Reflect.defineProperty(null, null, null); |
| 38 | } catch (e) { |
| 39 | exception = true; |
| 40 | assertTrue(/called on non-object/.test(e)); |
| 41 | } |
| 42 | assertTrue(exception); |
| 43 | |
| 44 | // Check that an exception is thrown when undefined is passed as object. |
| 45 | exception = false; |
| 46 | try { |
| 47 | Reflect.defineProperty(undefined, undefined, undefined); |
| 48 | } catch (e) { |
| 49 | exception = true; |
| 50 | assertTrue(/called on non-object/.test(e)); |
| 51 | } |
| 52 | assertTrue(exception); |
| 53 | |
| 54 | // Check that an exception is thrown when non-object is passed as object. |
| 55 | exception = false; |
| 56 | try { |
| 57 | Reflect.defineProperty(0, "foo", undefined); |
| 58 | } catch (e) { |
| 59 | exception = true; |
| 60 | assertTrue(/called on non-object/.test(e)); |
| 61 | } |
| 62 | assertTrue(exception); |
| 63 | |
| 64 | // Object. |
| 65 | var obj1 = {}; |
| 66 | |
| 67 | // Values. |
| 68 | var val1 = 0; |
| 69 | var val2 = 0; |
| 70 | var val3 = 0; |
| 71 | |
| 72 | function setter1() {val1++; } |
| 73 | function getter1() {return val1; } |
| 74 | |
| 75 | function setter2() {val2++; } |
| 76 | function getter2() {return val2; } |
| 77 | |
| 78 | function setter3() {val3++; } |
| 79 | function getter3() {return val3; } |
| 80 | |
| 81 | |
| 82 | // Descriptors. |
| 83 | var emptyDesc = {}; |
| 84 | |
| 85 | var accessorConfigurable = { |
| 86 | set: setter1, |
| 87 | get: getter1, |
| 88 | configurable: true |
| 89 | }; |
| 90 | |
| 91 | var accessorNoConfigurable = { |
| 92 | set: setter2, |
| 93 | get: getter2, |
| 94 | configurable: false |
| 95 | }; |
| 96 | |
| 97 | var accessorOnlySet = { |
| 98 | set: setter3, |
| 99 | configurable: true |
| 100 | }; |
| 101 | |
| 102 | var accessorOnlyGet = { |
| 103 | get: getter3, |
| 104 | configurable: true |
| 105 | }; |
| 106 | |
| 107 | var accessorDefault = {set: function(){} }; |
| 108 | |
| 109 | var dataConfigurable = { value: 1000, configurable: true }; |
| 110 | |
| 111 | var dataNoConfigurable = { value: 2000, configurable: false }; |
| 112 | |
| 113 | var dataWritable = { value: 3000, writable: true}; |
| 114 | |
| 115 | |
| 116 | // Check that we can't add property with undefined attributes. |
| 117 | assertThrows(function() { Reflect.defineProperty(obj1, "foo", undefined) }, |
| 118 | TypeError); |
| 119 | |
| 120 | // Make sure that we can add a property with an empty descriptor and |
| 121 | // that it has the default descriptor values. |
| 122 | assertTrue(Reflect.defineProperty(obj1, "foo", emptyDesc)); |
| 123 | |
| 124 | // foo should be undefined as it has no get, set or value |
| 125 | assertEquals(undefined, obj1.foo); |
| 126 | |
| 127 | // We should, however, be able to retrieve the propertydescriptor which should |
| 128 | // have all default values (according to 8.6.1). |
| 129 | var desc = Object.getOwnPropertyDescriptor(obj1, "foo"); |
| 130 | assertFalse(desc.configurable); |
| 131 | assertFalse(desc.enumerable); |
| 132 | assertFalse(desc.writable); |
| 133 | assertEquals(desc.get, undefined); |
| 134 | assertEquals(desc.set, undefined); |
| 135 | assertEquals(desc.value, undefined); |
| 136 | |
| 137 | // Make sure that getOwnPropertyDescriptor does not return a descriptor |
| 138 | // with default values if called with non existing property (otherwise |
| 139 | // the test above is invalid). |
| 140 | desc = Object.getOwnPropertyDescriptor(obj1, "bar"); |
| 141 | assertEquals(desc, undefined); |
| 142 | |
| 143 | // Make sure that foo can't be reset (as configurable is false). |
| 144 | assertFalse(Reflect.defineProperty(obj1, "foo", accessorConfigurable)); |
| 145 | |
| 146 | |
| 147 | // Accessor properties |
| 148 | |
| 149 | assertTrue(Reflect.defineProperty(obj1, "bar", accessorConfigurable)); |
| 150 | desc = Object.getOwnPropertyDescriptor(obj1, "bar"); |
| 151 | assertTrue(desc.configurable); |
| 152 | assertFalse(desc.enumerable); |
| 153 | assertEquals(desc.writable, undefined); |
| 154 | assertEquals(desc.get, accessorConfigurable.get); |
| 155 | assertEquals(desc.set, accessorConfigurable.set); |
| 156 | assertEquals(desc.value, undefined); |
| 157 | assertEquals(1, obj1.bar = 1); |
| 158 | assertEquals(1, val1); |
| 159 | assertEquals(1, obj1.bar = 1); |
| 160 | assertEquals(2, val1); |
| 161 | assertEquals(2, obj1.bar); |
| 162 | |
| 163 | // Redefine bar with non configurable test |
| 164 | assertTrue(Reflect.defineProperty(obj1, "bar", accessorNoConfigurable)); |
| 165 | desc = Object.getOwnPropertyDescriptor(obj1, "bar"); |
| 166 | assertFalse(desc.configurable); |
| 167 | assertFalse(desc.enumerable); |
| 168 | assertEquals(desc.writable, undefined); |
| 169 | assertEquals(desc.get, accessorNoConfigurable.get); |
| 170 | assertEquals(desc.set, accessorNoConfigurable.set); |
| 171 | assertEquals(desc.value, undefined); |
| 172 | assertEquals(1, obj1.bar = 1); |
| 173 | assertEquals(2, val1); |
| 174 | assertEquals(1, val2); |
| 175 | assertEquals(1, obj1.bar = 1) |
| 176 | assertEquals(2, val1); |
| 177 | assertEquals(2, val2); |
| 178 | assertEquals(2, obj1.bar); |
| 179 | |
| 180 | // Try to redefine bar again - should fail as configurable is false. |
| 181 | assertFalse(Reflect.defineProperty(obj1, "bar", accessorConfigurable)); |
| 182 | |
| 183 | // Try to redefine bar again using the data descriptor - should fail. |
| 184 | assertFalse(Reflect.defineProperty(obj1, "bar", dataConfigurable)); |
| 185 | |
| 186 | // Redefine using same descriptor - should succeed. |
| 187 | assertTrue(Reflect.defineProperty(obj1, "bar", accessorNoConfigurable)); |
| 188 | desc = Object.getOwnPropertyDescriptor(obj1, "bar"); |
| 189 | assertFalse(desc.configurable); |
| 190 | assertFalse(desc.enumerable); |
| 191 | assertEquals(desc.writable, undefined); |
| 192 | assertEquals(desc.get, accessorNoConfigurable.get); |
| 193 | assertEquals(desc.set, accessorNoConfigurable.set); |
| 194 | assertEquals(desc.value, undefined); |
| 195 | assertEquals(1, obj1.bar = 1); |
| 196 | assertEquals(2, val1); |
| 197 | assertEquals(3, val2); |
| 198 | assertEquals(1, obj1.bar = 1) |
| 199 | assertEquals(2, val1); |
| 200 | assertEquals(4, val2); |
| 201 | assertEquals(4, obj1.bar); |
| 202 | |
| 203 | // Define an accessor that has only a setter. |
| 204 | assertTrue(Reflect.defineProperty(obj1, "setOnly", accessorOnlySet)); |
| 205 | desc = Object.getOwnPropertyDescriptor(obj1, "setOnly"); |
| 206 | assertTrue(desc.configurable); |
| 207 | assertFalse(desc.enumerable); |
| 208 | assertEquals(desc.set, accessorOnlySet.set); |
| 209 | assertEquals(desc.writable, undefined); |
| 210 | assertEquals(desc.value, undefined); |
| 211 | assertEquals(desc.get, undefined); |
| 212 | assertEquals(1, obj1.setOnly = 1); |
| 213 | assertEquals(1, val3); |
| 214 | |
| 215 | // Add a getter - should not touch the setter. |
| 216 | assertTrue(Reflect.defineProperty(obj1, "setOnly", accessorOnlyGet)); |
| 217 | desc = Object.getOwnPropertyDescriptor(obj1, "setOnly"); |
| 218 | assertTrue(desc.configurable); |
| 219 | assertFalse(desc.enumerable); |
| 220 | assertEquals(desc.get, accessorOnlyGet.get); |
| 221 | assertEquals(desc.set, accessorOnlySet.set); |
| 222 | assertEquals(desc.writable, undefined); |
| 223 | assertEquals(desc.value, undefined); |
| 224 | assertEquals(1, obj1.setOnly = 1); |
| 225 | assertEquals(2, val3); |
| 226 | |
| 227 | // The above should also work if redefining just a getter or setter on |
| 228 | // an existing property with both a getter and a setter. |
| 229 | assertTrue(Reflect.defineProperty(obj1, "both", accessorConfigurable)); |
| 230 | |
| 231 | assertTrue(Reflect.defineProperty(obj1, "both", accessorOnlySet)); |
| 232 | desc = Object.getOwnPropertyDescriptor(obj1, "both"); |
| 233 | assertTrue(desc.configurable); |
| 234 | assertFalse(desc.enumerable); |
| 235 | assertEquals(desc.set, accessorOnlySet.set); |
| 236 | assertEquals(desc.get, accessorConfigurable.get); |
| 237 | assertEquals(desc.writable, undefined); |
| 238 | assertEquals(desc.value, undefined); |
| 239 | assertEquals(1, obj1.both = 1); |
| 240 | assertEquals(3, val3); |
| 241 | |
| 242 | |
| 243 | // Data properties |
| 244 | |
| 245 | assertTrue(Reflect.defineProperty(obj1, "foobar", dataConfigurable)); |
| 246 | desc = Object.getOwnPropertyDescriptor(obj1, "foobar"); |
| 247 | assertEquals(obj1.foobar, 1000); |
| 248 | assertEquals(desc.value, 1000); |
| 249 | assertTrue(desc.configurable); |
| 250 | assertFalse(desc.writable); |
| 251 | assertFalse(desc.enumerable); |
| 252 | assertEquals(desc.get, undefined); |
| 253 | assertEquals(desc.set, undefined); |
| 254 | //Try writing to non writable attribute - should remain 1000 |
| 255 | obj1.foobar = 1001; |
| 256 | assertEquals(obj1.foobar, 1000); |
| 257 | |
| 258 | |
| 259 | // Redefine to writable descriptor - now writing to foobar should be allowed. |
| 260 | assertTrue(Reflect.defineProperty(obj1, "foobar", dataWritable)); |
| 261 | desc = Object.getOwnPropertyDescriptor(obj1, "foobar"); |
| 262 | assertEquals(obj1.foobar, 3000); |
| 263 | assertEquals(desc.value, 3000); |
| 264 | // Note that since dataWritable does not define configurable the configurable |
| 265 | // setting from the redefined property (in this case true) is used. |
| 266 | assertTrue(desc.configurable); |
| 267 | assertTrue(desc.writable); |
| 268 | assertFalse(desc.enumerable); |
| 269 | assertEquals(desc.get, undefined); |
| 270 | assertEquals(desc.set, undefined); |
| 271 | // Writing to the property should now be allowed |
| 272 | obj1.foobar = 1001; |
| 273 | assertEquals(obj1.foobar, 1001); |
| 274 | |
| 275 | |
| 276 | // Redefine with non configurable data property. |
| 277 | assertTrue(Reflect.defineProperty(obj1, "foobar", dataNoConfigurable)); |
| 278 | desc = Object.getOwnPropertyDescriptor(obj1, "foobar"); |
| 279 | assertEquals(obj1.foobar, 2000); |
| 280 | assertEquals(desc.value, 2000); |
| 281 | assertFalse(desc.configurable); |
| 282 | assertTrue(desc.writable); |
| 283 | assertFalse(desc.enumerable); |
| 284 | assertEquals(desc.get, undefined); |
| 285 | assertEquals(desc.set, undefined); |
| 286 | |
| 287 | // Try redefine again - shold fail because configurable is now false. |
| 288 | assertFalse(Reflect.defineProperty(obj1, "foobar", dataConfigurable)); |
| 289 | |
| 290 | // Try redefine again with accessor property - shold also fail. |
| 291 | assertFalse(Reflect.defineProperty(obj1, "foobar", dataConfigurable)); |
| 292 | |
| 293 | |
| 294 | // Redifine with the same descriptor - should succeed (step 6). |
| 295 | assertTrue(Reflect.defineProperty(obj1, "foobar", dataNoConfigurable)); |
| 296 | desc = Object.getOwnPropertyDescriptor(obj1, "foobar"); |
| 297 | assertEquals(obj1.foobar, 2000); |
| 298 | assertEquals(desc.value, 2000); |
| 299 | assertFalse(desc.configurable); |
| 300 | assertTrue(desc.writable); |
| 301 | assertFalse(desc.enumerable); |
| 302 | assertEquals(desc.get, undefined); |
| 303 | assertEquals(desc.set, undefined); |
| 304 | |
| 305 | |
| 306 | // New object |
| 307 | var obj2 = {}; |
| 308 | |
| 309 | // Make accessor - redefine to data |
| 310 | assertTrue(Reflect.defineProperty(obj2, "foo", accessorConfigurable)); |
| 311 | |
| 312 | // Redefine to data property |
| 313 | assertTrue(Reflect.defineProperty(obj2, "foo", dataConfigurable)); |
| 314 | desc = Object.getOwnPropertyDescriptor(obj2, "foo"); |
| 315 | assertEquals(obj2.foo, 1000); |
| 316 | assertEquals(desc.value, 1000); |
| 317 | assertTrue(desc.configurable); |
| 318 | assertFalse(desc.writable); |
| 319 | assertFalse(desc.enumerable); |
| 320 | assertEquals(desc.get, undefined); |
| 321 | assertEquals(desc.set, undefined); |
| 322 | |
| 323 | |
| 324 | // Redefine back to accessor |
| 325 | assertTrue(Reflect.defineProperty(obj2, "foo", accessorConfigurable)); |
| 326 | desc = Object.getOwnPropertyDescriptor(obj2, "foo"); |
| 327 | assertTrue(desc.configurable); |
| 328 | assertFalse(desc.enumerable); |
| 329 | assertEquals(desc.writable, undefined); |
| 330 | assertEquals(desc.get, accessorConfigurable.get); |
| 331 | assertEquals(desc.set, accessorConfigurable.set); |
| 332 | assertEquals(desc.value, undefined); |
| 333 | assertEquals(1, obj2.foo = 1); |
| 334 | assertEquals(3, val1); |
| 335 | assertEquals(4, val2); |
| 336 | assertEquals(3, obj2.foo); |
| 337 | |
| 338 | // Make data - redefine to accessor |
| 339 | assertTrue(Reflect.defineProperty(obj2, "bar", dataConfigurable)) |
| 340 | |
| 341 | // Redefine to accessor property |
| 342 | assertTrue(Reflect.defineProperty(obj2, "bar", accessorConfigurable)); |
| 343 | desc = Object.getOwnPropertyDescriptor(obj2, "bar"); |
| 344 | assertTrue(desc.configurable); |
| 345 | assertFalse(desc.enumerable); |
| 346 | assertEquals(desc.writable, undefined); |
| 347 | assertEquals(desc.get, accessorConfigurable.get); |
| 348 | assertEquals(desc.set, accessorConfigurable.set); |
| 349 | assertEquals(desc.value, undefined); |
| 350 | assertEquals(1, obj2.bar = 1); |
| 351 | assertEquals(4, val1); |
| 352 | assertEquals(4, val2); |
| 353 | assertEquals(4, obj2.foo); |
| 354 | |
| 355 | // Redefine back to data property |
| 356 | assertTrue(Reflect.defineProperty(obj2, "bar", dataConfigurable)); |
| 357 | desc = Object.getOwnPropertyDescriptor(obj2, "bar"); |
| 358 | assertEquals(obj2.bar, 1000); |
| 359 | assertEquals(desc.value, 1000); |
| 360 | assertTrue(desc.configurable); |
| 361 | assertFalse(desc.writable); |
| 362 | assertFalse(desc.enumerable); |
| 363 | assertEquals(desc.get, undefined); |
| 364 | assertEquals(desc.set, undefined); |
| 365 | |
| 366 | |
| 367 | // Redefinition of an accessor defined using __defineGetter__ and |
| 368 | // __defineSetter__. |
| 369 | function get(){return this.x} |
| 370 | function set(x){this.x=x}; |
| 371 | |
| 372 | var obj3 = {x:1000}; |
| 373 | obj3.__defineGetter__("foo", get); |
| 374 | obj3.__defineSetter__("foo", set); |
| 375 | |
| 376 | desc = Object.getOwnPropertyDescriptor(obj3, "foo"); |
| 377 | assertTrue(desc.configurable); |
| 378 | assertTrue(desc.enumerable); |
| 379 | assertEquals(desc.writable, undefined); |
| 380 | assertEquals(desc.get, get); |
| 381 | assertEquals(desc.set, set); |
| 382 | assertEquals(desc.value, undefined); |
| 383 | assertEquals(1, obj3.foo = 1); |
| 384 | assertEquals(1, obj3.x); |
| 385 | assertEquals(1, obj3.foo); |
| 386 | |
| 387 | // Redefine to accessor property (non configurable) - note that enumerable |
| 388 | // which we do not redefine should remain the same (true). |
| 389 | assertTrue(Reflect.defineProperty(obj3, "foo", accessorNoConfigurable)); |
| 390 | desc = Object.getOwnPropertyDescriptor(obj3, "foo"); |
| 391 | assertFalse(desc.configurable); |
| 392 | assertTrue(desc.enumerable); |
| 393 | assertEquals(desc.writable, undefined); |
| 394 | assertEquals(desc.get, accessorNoConfigurable.get); |
| 395 | assertEquals(desc.set, accessorNoConfigurable.set); |
| 396 | assertEquals(desc.value, undefined); |
| 397 | assertEquals(1, obj3.foo = 1); |
| 398 | assertEquals(5, val2); |
| 399 | assertEquals(5, obj3.foo); |
| 400 | |
| 401 | |
| 402 | obj3.__defineGetter__("bar", get); |
| 403 | obj3.__defineSetter__("bar", set); |
| 404 | |
| 405 | |
| 406 | // Redefine back to data property |
| 407 | assertTrue(Reflect.defineProperty(obj3, "bar", dataConfigurable)); |
| 408 | desc = Object.getOwnPropertyDescriptor(obj3, "bar"); |
| 409 | assertEquals(obj3.bar, 1000); |
| 410 | assertEquals(desc.value, 1000); |
| 411 | assertTrue(desc.configurable); |
| 412 | assertFalse(desc.writable); |
| 413 | assertTrue(desc.enumerable); |
| 414 | assertEquals(desc.get, undefined); |
| 415 | assertEquals(desc.set, undefined); |
| 416 | |
| 417 | |
| 418 | var obj4 = {}; |
| 419 | var func = function (){return 42;}; |
| 420 | obj4.bar = func; |
| 421 | assertEquals(42, obj4.bar()); |
| 422 | |
| 423 | assertTrue(Reflect.defineProperty(obj4, "bar", accessorConfigurable)); |
| 424 | desc = Object.getOwnPropertyDescriptor(obj4, "bar"); |
| 425 | assertTrue(desc.configurable); |
| 426 | assertTrue(desc.enumerable); |
| 427 | assertEquals(desc.writable, undefined); |
| 428 | assertEquals(desc.get, accessorConfigurable.get); |
| 429 | assertEquals(desc.set, accessorConfigurable.set); |
| 430 | assertEquals(desc.value, undefined); |
| 431 | assertEquals(1, obj4.bar = 1); |
| 432 | assertEquals(5, val1); |
| 433 | assertEquals(5, obj4.bar); |
| 434 | |
| 435 | // Make sure an error is thrown when trying to access to redefined function. |
| 436 | try { |
| 437 | obj4.bar(); |
| 438 | assertTrue(false); |
| 439 | } catch (e) { |
| 440 | assertTrue(/is not a function/.test(e)); |
| 441 | } |
| 442 | |
| 443 | |
| 444 | // Test runtime calls to DefineDataPropertyUnchecked and |
| 445 | // DefineAccessorPropertyUnchecked - make sure we don't |
| 446 | // crash. |
| 447 | try { |
| 448 | %DefineAccessorPropertyUnchecked(0, 0, 0, 0, 0); |
| 449 | } catch (e) { |
| 450 | assertTrue(/illegal access/.test(e)); |
| 451 | } |
| 452 | |
| 453 | try { |
| 454 | %DefineDataPropertyUnchecked(0, 0, 0, 0); |
| 455 | } catch (e) { |
| 456 | assertTrue(/illegal access/.test(e)); |
| 457 | } |
| 458 | |
| 459 | try { |
| 460 | %DefineDataPropertyUnchecked(null, null, null, null); |
| 461 | } catch (e) { |
| 462 | assertTrue(/illegal access/.test(e)); |
| 463 | } |
| 464 | |
| 465 | try { |
| 466 | %DefineAccessorPropertyUnchecked(null, null, null, null, null); |
| 467 | } catch (e) { |
| 468 | assertTrue(/illegal access/.test(e)); |
| 469 | } |
| 470 | |
| 471 | try { |
| 472 | %DefineDataPropertyUnchecked({}, null, null, null); |
| 473 | } catch (e) { |
| 474 | assertTrue(/illegal access/.test(e)); |
| 475 | } |
| 476 | |
| 477 | // Defining properties null should fail even when we have |
| 478 | // other allowed values |
| 479 | try { |
| 480 | %DefineAccessorPropertyUnchecked(null, 'foo', func, null, 0); |
| 481 | } catch (e) { |
| 482 | assertTrue(/illegal access/.test(e)); |
| 483 | } |
| 484 | |
| 485 | try { |
| 486 | %DefineDataPropertyUnchecked(null, 'foo', 0, 0); |
| 487 | } catch (e) { |
| 488 | assertTrue(/illegal access/.test(e)); |
| 489 | } |
| 490 | |
| 491 | // Test that all possible differences in step 6 in DefineOwnProperty are |
| 492 | // exercised, i.e., any difference in the given property descriptor and the |
| 493 | // existing properties should not return true, but throw an error if the |
| 494 | // existing configurable property is false. |
| 495 | |
| 496 | var obj5 = {}; |
| 497 | // Enumerable will default to false. |
| 498 | assertTrue(Reflect.defineProperty(obj5, 'foo', accessorNoConfigurable)); |
| 499 | desc = Object.getOwnPropertyDescriptor(obj5, 'foo'); |
| 500 | // First, test that we are actually allowed to set the accessor if all |
| 501 | // values are of the descriptor are the same as the existing one. |
| 502 | assertTrue(Reflect.defineProperty(obj5, 'foo', accessorNoConfigurable)); |
| 503 | |
| 504 | // Different setter. |
| 505 | var descDifferent = { |
| 506 | configurable:false, |
| 507 | enumerable:false, |
| 508 | set: setter1, |
| 509 | get: getter2 |
| 510 | }; |
| 511 | |
| 512 | assertFalse(Reflect.defineProperty(obj5, 'foo', descDifferent)); |
| 513 | |
| 514 | // Different getter. |
| 515 | descDifferent = { |
| 516 | configurable:false, |
| 517 | enumerable:false, |
| 518 | set: setter2, |
| 519 | get: getter1 |
| 520 | }; |
| 521 | |
| 522 | assertFalse(Reflect.defineProperty(obj5, 'foo', descDifferent)); |
| 523 | |
| 524 | // Different enumerable. |
| 525 | descDifferent = { |
| 526 | configurable:false, |
| 527 | enumerable:true, |
| 528 | set: setter2, |
| 529 | get: getter2 |
| 530 | }; |
| 531 | |
| 532 | assertFalse(Reflect.defineProperty(obj5, 'foo', descDifferent)); |
| 533 | |
| 534 | // Different configurable. |
| 535 | descDifferent = { |
| 536 | configurable:false, |
| 537 | enumerable:true, |
| 538 | set: setter2, |
| 539 | get: getter2 |
| 540 | }; |
| 541 | |
| 542 | assertFalse(Reflect.defineProperty(obj5, 'foo', descDifferent)); |
| 543 | |
| 544 | // No difference. |
| 545 | descDifferent = { |
| 546 | configurable:false, |
| 547 | enumerable:false, |
| 548 | set: setter2, |
| 549 | get: getter2 |
| 550 | }; |
| 551 | // Make sure we can still redefine if all properties are the same. |
| 552 | assertTrue(Reflect.defineProperty(obj5, 'foo', descDifferent)); |
| 553 | |
| 554 | // Make sure that obj5 still holds the original values. |
| 555 | desc = Object.getOwnPropertyDescriptor(obj5, 'foo'); |
| 556 | assertEquals(desc.get, getter2); |
| 557 | assertEquals(desc.set, setter2); |
| 558 | assertFalse(desc.enumerable); |
| 559 | assertFalse(desc.configurable); |
| 560 | |
| 561 | |
| 562 | // Also exercise step 6 on data property, writable and enumerable |
| 563 | // defaults to false. |
| 564 | assertTrue(Reflect.defineProperty(obj5, 'bar', dataNoConfigurable)); |
| 565 | |
| 566 | // Test that redefinition with the same property descriptor is possible |
| 567 | assertTrue(Reflect.defineProperty(obj5, 'bar', dataNoConfigurable)); |
| 568 | |
| 569 | // Different value. |
| 570 | descDifferent = { |
| 571 | configurable:false, |
| 572 | enumerable:false, |
| 573 | writable: false, |
| 574 | value: 1999 |
| 575 | }; |
| 576 | |
| 577 | assertFalse(Reflect.defineProperty(obj5, 'bar', descDifferent)); |
| 578 | |
| 579 | // Different writable. |
| 580 | descDifferent = { |
| 581 | configurable:false, |
| 582 | enumerable:false, |
| 583 | writable: true, |
| 584 | value: 2000 |
| 585 | }; |
| 586 | |
| 587 | assertFalse(Reflect.defineProperty(obj5, 'bar', descDifferent)); |
| 588 | |
| 589 | |
| 590 | // Different enumerable. |
| 591 | descDifferent = { |
| 592 | configurable:false, |
| 593 | enumerable:true , |
| 594 | writable:false, |
| 595 | value: 2000 |
| 596 | }; |
| 597 | |
| 598 | assertFalse(Reflect.defineProperty(obj5, 'bar', descDifferent)); |
| 599 | |
| 600 | |
| 601 | // Different configurable. |
| 602 | descDifferent = { |
| 603 | configurable:true, |
| 604 | enumerable:false, |
| 605 | writable:false, |
| 606 | value: 2000 |
| 607 | }; |
| 608 | |
| 609 | assertFalse(Reflect.defineProperty(obj5, 'bar', descDifferent)); |
| 610 | |
| 611 | // No difference. |
| 612 | descDifferent = { |
| 613 | configurable:false, |
| 614 | enumerable:false, |
| 615 | writable:false, |
| 616 | value:2000 |
| 617 | }; |
| 618 | // Make sure we can still redefine if all properties are the same. |
| 619 | assertTrue(Reflect.defineProperty(obj5, 'bar', descDifferent)); |
| 620 | |
| 621 | // Make sure that obj5 still holds the original values. |
| 622 | desc = Object.getOwnPropertyDescriptor(obj5, 'bar'); |
| 623 | assertEquals(desc.value, 2000); |
| 624 | assertFalse(desc.writable); |
| 625 | assertFalse(desc.enumerable); |
| 626 | assertFalse(desc.configurable); |
| 627 | |
| 628 | |
| 629 | // Make sure that we can't overwrite +0 with -0 and vice versa. |
| 630 | var descMinusZero = {value: -0, configurable: false}; |
| 631 | var descPlusZero = {value: +0, configurable: false}; |
| 632 | |
| 633 | assertTrue(Reflect.defineProperty(obj5, 'minuszero', descMinusZero)); |
| 634 | |
| 635 | // Make sure we can redefine with -0. |
| 636 | assertTrue(Reflect.defineProperty(obj5, 'minuszero', descMinusZero)); |
| 637 | |
| 638 | assertFalse(Reflect.defineProperty(obj5, 'minuszero', descPlusZero)); |
| 639 | |
| 640 | |
| 641 | assertTrue(Reflect.defineProperty(obj5, 'pluszero', descPlusZero)); |
| 642 | |
| 643 | // Make sure we can redefine with +0. |
| 644 | assertTrue(Reflect.defineProperty(obj5, 'pluszero', descPlusZero)); |
| 645 | |
| 646 | assertFalse(Reflect.defineProperty(obj5, 'pluszero', descMinusZero)); |
| 647 | |
| 648 | |
| 649 | var obj6 = {}; |
| 650 | obj6[1] = 'foo'; |
| 651 | obj6[2] = 'bar'; |
| 652 | obj6[3] = '42'; |
| 653 | obj6[4] = '43'; |
| 654 | obj6[5] = '44'; |
| 655 | |
| 656 | var descElement = { value: 'foobar' }; |
| 657 | var descElementNonConfigurable = { value: 'barfoo', configurable: false }; |
| 658 | var descElementNonWritable = { value: 'foofoo', writable: false }; |
| 659 | var descElementNonEnumerable = { value: 'barbar', enumerable: false }; |
| 660 | var descElementAllFalse = { value: 'foofalse', |
| 661 | configurable: false, |
| 662 | writable: false, |
| 663 | enumerable: false }; |
| 664 | |
| 665 | |
| 666 | // Redefine existing property. |
| 667 | assertTrue(Reflect.defineProperty(obj6, '1', descElement)); |
| 668 | desc = Object.getOwnPropertyDescriptor(obj6, '1'); |
| 669 | assertEquals(desc.value, 'foobar'); |
| 670 | assertTrue(desc.writable); |
| 671 | assertTrue(desc.enumerable); |
| 672 | assertTrue(desc.configurable); |
| 673 | |
| 674 | // Redefine existing property with configurable: false. |
| 675 | assertTrue(Reflect.defineProperty(obj6, '2', descElementNonConfigurable)); |
| 676 | desc = Object.getOwnPropertyDescriptor(obj6, '2'); |
| 677 | assertEquals(desc.value, 'barfoo'); |
| 678 | assertTrue(desc.writable); |
| 679 | assertTrue(desc.enumerable); |
| 680 | assertFalse(desc.configurable); |
| 681 | |
| 682 | // Can use defineProperty to change the value of a non |
| 683 | // configurable property. |
| 684 | try { |
| 685 | assertTrue(Reflect.defineProperty(obj6, '2', descElement)); |
| 686 | desc = Object.getOwnPropertyDescriptor(obj6, '2'); |
| 687 | assertEquals(desc.value, 'foobar'); |
| 688 | } catch (e) { |
| 689 | assertUnreachable(); |
| 690 | } |
| 691 | |
| 692 | // Ensure that we can't change the descriptor of a |
| 693 | // non configurable property. |
| 694 | var descAccessor = { get: function() { return 0; } }; |
| 695 | assertFalse(Reflect.defineProperty(obj6, '2', descAccessor)); |
| 696 | |
| 697 | assertTrue(Reflect.defineProperty(obj6, '2', descElementNonWritable)); |
| 698 | desc = Object.getOwnPropertyDescriptor(obj6, '2'); |
| 699 | assertEquals(desc.value, 'foofoo'); |
| 700 | assertFalse(desc.writable); |
| 701 | assertTrue(desc.enumerable); |
| 702 | assertFalse(desc.configurable); |
| 703 | |
| 704 | assertTrue(Reflect.defineProperty(obj6, '3', descElementNonWritable)); |
| 705 | desc = Object.getOwnPropertyDescriptor(obj6, '3'); |
| 706 | assertEquals(desc.value, 'foofoo'); |
| 707 | assertFalse(desc.writable); |
| 708 | assertTrue(desc.enumerable); |
| 709 | assertTrue(desc.configurable); |
| 710 | |
| 711 | // Redefine existing property with configurable: false. |
| 712 | assertTrue(Reflect.defineProperty(obj6, '4', descElementNonEnumerable)); |
| 713 | desc = Object.getOwnPropertyDescriptor(obj6, '4'); |
| 714 | assertEquals(desc.value, 'barbar'); |
| 715 | assertTrue(desc.writable); |
| 716 | assertFalse(desc.enumerable); |
| 717 | assertTrue(desc.configurable); |
| 718 | |
| 719 | // Redefine existing property with configurable: false. |
| 720 | assertTrue(Reflect.defineProperty(obj6, '5', descElementAllFalse)); |
| 721 | desc = Object.getOwnPropertyDescriptor(obj6, '5'); |
| 722 | assertEquals(desc.value, 'foofalse'); |
| 723 | assertFalse(desc.writable); |
| 724 | assertFalse(desc.enumerable); |
| 725 | assertFalse(desc.configurable); |
| 726 | |
| 727 | // Define non existing property - all attributes should default to false. |
| 728 | assertTrue(Reflect.defineProperty(obj6, '15', descElement)); |
| 729 | desc = Object.getOwnPropertyDescriptor(obj6, '15'); |
| 730 | assertEquals(desc.value, 'foobar'); |
| 731 | assertFalse(desc.writable); |
| 732 | assertFalse(desc.enumerable); |
| 733 | assertFalse(desc.configurable); |
| 734 | |
| 735 | // Make sure that we can't redefine using direct access. |
| 736 | obj6[15] ='overwrite'; |
| 737 | assertEquals(obj6[15],'foobar'); |
| 738 | |
| 739 | |
| 740 | // Repeat the above tests on an array. |
| 741 | var arr = new Array(); |
| 742 | arr[1] = 'foo'; |
| 743 | arr[2] = 'bar'; |
| 744 | arr[3] = '42'; |
| 745 | arr[4] = '43'; |
| 746 | arr[5] = '44'; |
| 747 | |
| 748 | var descElement = { value: 'foobar' }; |
| 749 | var descElementNonConfigurable = { value: 'barfoo', configurable: false }; |
| 750 | var descElementNonWritable = { value: 'foofoo', writable: false }; |
| 751 | var descElementNonEnumerable = { value: 'barbar', enumerable: false }; |
| 752 | var descElementAllFalse = { value: 'foofalse', |
| 753 | configurable: false, |
| 754 | writable: false, |
| 755 | enumerable: false }; |
| 756 | |
| 757 | |
| 758 | // Redefine existing property. |
| 759 | assertTrue(Reflect.defineProperty(arr, '1', descElement)); |
| 760 | desc = Object.getOwnPropertyDescriptor(arr, '1'); |
| 761 | assertEquals(desc.value, 'foobar'); |
| 762 | assertTrue(desc.writable); |
| 763 | assertTrue(desc.enumerable); |
| 764 | assertTrue(desc.configurable); |
| 765 | |
| 766 | // Redefine existing property with configurable: false. |
| 767 | assertTrue(Reflect.defineProperty(arr, '2', descElementNonConfigurable)); |
| 768 | desc = Object.getOwnPropertyDescriptor(arr, '2'); |
| 769 | assertEquals(desc.value, 'barfoo'); |
| 770 | assertTrue(desc.writable); |
| 771 | assertTrue(desc.enumerable); |
| 772 | assertFalse(desc.configurable); |
| 773 | |
| 774 | // Can use defineProperty to change the value of a non |
| 775 | // configurable property of an array. |
| 776 | try { |
| 777 | assertTrue(Reflect.defineProperty(arr, '2', descElement)); |
| 778 | desc = Object.getOwnPropertyDescriptor(arr, '2'); |
| 779 | assertEquals(desc.value, 'foobar'); |
| 780 | } catch (e) { |
| 781 | assertUnreachable(); |
| 782 | } |
| 783 | |
| 784 | // Ensure that we can't change the descriptor of a |
| 785 | // non configurable property. |
| 786 | var descAccessor = { get: function() { return 0; } }; |
| 787 | assertFalse(Reflect.defineProperty(arr, '2', descAccessor)); |
| 788 | |
| 789 | assertTrue(Reflect.defineProperty(arr, '2', descElementNonWritable)); |
| 790 | desc = Object.getOwnPropertyDescriptor(arr, '2'); |
| 791 | assertEquals(desc.value, 'foofoo'); |
| 792 | assertFalse(desc.writable); |
| 793 | assertTrue(desc.enumerable); |
| 794 | assertFalse(desc.configurable); |
| 795 | |
| 796 | assertTrue(Reflect.defineProperty(arr, '3', descElementNonWritable)); |
| 797 | desc = Object.getOwnPropertyDescriptor(arr, '3'); |
| 798 | assertEquals(desc.value, 'foofoo'); |
| 799 | assertFalse(desc.writable); |
| 800 | assertTrue(desc.enumerable); |
| 801 | assertTrue(desc.configurable); |
| 802 | |
| 803 | // Redefine existing property with configurable: false. |
| 804 | assertTrue(Reflect.defineProperty(arr, '4', descElementNonEnumerable)); |
| 805 | desc = Object.getOwnPropertyDescriptor(arr, '4'); |
| 806 | assertEquals(desc.value, 'barbar'); |
| 807 | assertTrue(desc.writable); |
| 808 | assertFalse(desc.enumerable); |
| 809 | assertTrue(desc.configurable); |
| 810 | |
| 811 | // Redefine existing property with configurable: false. |
| 812 | assertTrue(Reflect.defineProperty(arr, '5', descElementAllFalse)); |
| 813 | desc = Object.getOwnPropertyDescriptor(arr, '5'); |
| 814 | assertEquals(desc.value, 'foofalse'); |
| 815 | assertFalse(desc.writable); |
| 816 | assertFalse(desc.enumerable); |
| 817 | assertFalse(desc.configurable); |
| 818 | |
| 819 | // Define non existing property - all attributes should default to false. |
| 820 | assertTrue(Reflect.defineProperty(arr, '15', descElement)); |
| 821 | desc = Object.getOwnPropertyDescriptor(arr, '15'); |
| 822 | assertEquals(desc.value, 'foobar'); |
| 823 | assertFalse(desc.writable); |
| 824 | assertFalse(desc.enumerable); |
| 825 | assertFalse(desc.configurable); |
| 826 | |
| 827 | // Define non-array property, check that .length is unaffected. |
| 828 | assertEquals(16, arr.length); |
| 829 | assertTrue(Reflect.defineProperty(arr, '0x20', descElement)); |
| 830 | assertEquals(16, arr.length); |
| 831 | |
| 832 | // See issue 968: http://code.google.com/p/v8/issues/detail?id=968 |
| 833 | var o = { x : 42 }; |
| 834 | assertTrue(Reflect.defineProperty(o, "x", { writable: false })); |
| 835 | assertEquals(42, o.x); |
| 836 | o.x = 37; |
| 837 | assertEquals(42, o.x); |
| 838 | |
| 839 | o = { x : 42 }; |
| 840 | assertTrue(Reflect.defineProperty(o, "x", {})); |
| 841 | assertEquals(42, o.x); |
| 842 | o.x = 37; |
| 843 | // Writability is preserved. |
| 844 | assertEquals(37, o.x); |
| 845 | |
| 846 | var o = { }; |
| 847 | assertTrue(Reflect.defineProperty(o, "x", { writable: false })); |
| 848 | assertEquals(undefined, o.x); |
| 849 | o.x = 37; |
| 850 | assertEquals(undefined, o.x); |
| 851 | |
| 852 | o = { get x() { return 87; } }; |
| 853 | assertTrue(Reflect.defineProperty(o, "x", { writable: false })); |
| 854 | assertEquals(undefined, o.x); |
| 855 | o.x = 37; |
| 856 | assertEquals(undefined, o.x); |
| 857 | |
| 858 | // Ignore inherited properties. |
| 859 | o = { __proto__ : { x : 87 } }; |
| 860 | assertTrue(Reflect.defineProperty(o, "x", { writable: false })); |
| 861 | assertEquals(undefined, o.x); |
| 862 | o.x = 37; |
| 863 | assertEquals(undefined, o.x); |
| 864 | |
| 865 | function testDefineProperty(obj, propertyName, desc, resultDesc) { |
| 866 | assertTrue(Reflect.defineProperty(obj, propertyName, desc)); |
| 867 | var actualDesc = Object.getOwnPropertyDescriptor(obj, propertyName); |
| 868 | assertEquals(resultDesc.enumerable, actualDesc.enumerable); |
| 869 | assertEquals(resultDesc.configurable, actualDesc.configurable); |
| 870 | if (resultDesc.hasOwnProperty('value')) { |
| 871 | assertEquals(resultDesc.value, actualDesc.value); |
| 872 | assertEquals(resultDesc.writable, actualDesc.writable); |
| 873 | assertFalse(resultDesc.hasOwnProperty('get')); |
| 874 | assertFalse(resultDesc.hasOwnProperty('set')); |
| 875 | } else { |
| 876 | assertEquals(resultDesc.get, actualDesc.get); |
| 877 | assertEquals(resultDesc.set, actualDesc.set); |
| 878 | assertFalse(resultDesc.hasOwnProperty('value')); |
| 879 | assertFalse(resultDesc.hasOwnProperty('writable')); |
| 880 | } |
| 881 | } |
| 882 | |
| 883 | // tests redefining existing property with a generic descriptor |
| 884 | o = { p : 42 }; |
| 885 | testDefineProperty(o, 'p', |
| 886 | { }, |
| 887 | { value : 42, writable : true, enumerable : true, configurable : true }); |
| 888 | |
| 889 | o = { p : 42 }; |
| 890 | testDefineProperty(o, 'p', |
| 891 | { enumerable : true }, |
| 892 | { value : 42, writable : true, enumerable : true, configurable : true }); |
| 893 | |
| 894 | o = { p : 42 }; |
| 895 | testDefineProperty(o, 'p', |
| 896 | { configurable : true }, |
| 897 | { value : 42, writable : true, enumerable : true, configurable : true }); |
| 898 | |
| 899 | o = { p : 42 }; |
| 900 | testDefineProperty(o, 'p', |
| 901 | { enumerable : false }, |
| 902 | { value : 42, writable : true, enumerable : false, configurable : true }); |
| 903 | |
| 904 | o = { p : 42 }; |
| 905 | testDefineProperty(o, 'p', |
| 906 | { configurable : false }, |
| 907 | { value : 42, writable : true, enumerable : true, configurable : false }); |
| 908 | |
| 909 | o = { p : 42 }; |
| 910 | testDefineProperty(o, 'p', |
| 911 | { enumerable : true, configurable : true }, |
| 912 | { value : 42, writable : true, enumerable : true, configurable : true }); |
| 913 | |
| 914 | o = { p : 42 }; |
| 915 | testDefineProperty(o, 'p', |
| 916 | { enumerable : false, configurable : true }, |
| 917 | { value : 42, writable : true, enumerable : false, configurable : true }); |
| 918 | |
| 919 | o = { p : 42 }; |
| 920 | testDefineProperty(o, 'p', |
| 921 | { enumerable : true, configurable : false }, |
| 922 | { value : 42, writable : true, enumerable : true, configurable : false }); |
| 923 | |
| 924 | o = { p : 42 }; |
| 925 | testDefineProperty(o, 'p', |
| 926 | { enumerable : false, configurable : false }, |
| 927 | { value : 42, writable : true, enumerable : false, configurable : false }); |
| 928 | |
| 929 | // can make a writable, non-configurable field non-writable |
| 930 | o = { p : 42 }; |
| 931 | assertTrue(Reflect.defineProperty(o, 'p', { configurable: false })); |
| 932 | testDefineProperty(o, 'p', |
| 933 | { writable: false }, |
| 934 | { value : 42, writable : false, enumerable : true, configurable : false }); |
| 935 | |
| 936 | // redefine of get only property with generic descriptor |
| 937 | o = {}; |
| 938 | assertTrue(Reflect.defineProperty(o, 'p', |
| 939 | { get : getter1, enumerable: true, configurable: true })); |
| 940 | testDefineProperty(o, 'p', |
| 941 | { enumerable : false, configurable : false }, |
| 942 | { get: getter1, set: undefined, enumerable : false, configurable : false }); |
| 943 | |
| 944 | // redefine of get/set only property with generic descriptor |
| 945 | o = {}; |
| 946 | assertTrue(Reflect.defineProperty(o, 'p', |
| 947 | { get: getter1, set: setter1, enumerable: true, configurable: true })); |
| 948 | testDefineProperty(o, 'p', |
| 949 | { enumerable : false, configurable : false }, |
| 950 | { get: getter1, set: setter1, enumerable : false, configurable : false }); |
| 951 | |
| 952 | // redefine of set only property with generic descriptor |
| 953 | o = {}; |
| 954 | assertTrue(Reflect.defineProperty(o, 'p', |
| 955 | { set : setter1, enumerable: true, configurable: true })); |
| 956 | testDefineProperty(o, 'p', |
| 957 | { enumerable : false, configurable : false }, |
| 958 | { get: undefined, set: setter1, enumerable : false, configurable : false }); |
| 959 | |
| 960 | |
| 961 | // Regression test: Ensure that growing dictionaries are not ignored. |
| 962 | o = {}; |
| 963 | for (var i = 0; i < 1000; i++) { |
| 964 | // Non-enumerable property forces dictionary mode. |
| 965 | assertTrue(Reflect.defineProperty(o, i, {value: i, enumerable: false})); |
| 966 | } |
| 967 | assertEquals(999, o[999]); |
| 968 | |
| 969 | |
| 970 | // Regression test: Bizzare behavior on non-strict arguments object. |
| 971 | // TODO(yangguo): Tests disabled, needs investigation! |
| 972 | /* |
| 973 | (function test(arg0) { |
| 974 | // Here arguments[0] is a fast alias on arg0. |
| 975 | Reflect.defineProperty(arguments, "0", { |
| 976 | value:1, |
| 977 | enumerable:false |
| 978 | }); |
| 979 | // Here arguments[0] is a slow alias on arg0. |
| 980 | Reflect.defineProperty(arguments, "0", { |
| 981 | value:2, |
| 982 | writable:false |
| 983 | }); |
| 984 | // Here arguments[0] is no alias at all. |
| 985 | Reflect.defineProperty(arguments, "0", { |
| 986 | value:3 |
| 987 | }); |
| 988 | assertEquals(2, arg0); |
| 989 | assertEquals(3, arguments[0]); |
| 990 | })(0); |
| 991 | */ |
| 992 | |
| 993 | // Regression test: We should never observe the hole value. |
| 994 | var objectWithGetter = {}; |
| 995 | objectWithGetter.__defineGetter__('foo', function() {}); |
| 996 | assertEquals(undefined, objectWithGetter.__lookupSetter__('foo')); |
| 997 | |
| 998 | var objectWithSetter = {}; |
| 999 | objectWithSetter.__defineSetter__('foo', function(x) {}); |
| 1000 | assertEquals(undefined, objectWithSetter.__lookupGetter__('foo')); |
| 1001 | |
| 1002 | // An object with a getter on the prototype chain. |
| 1003 | function getter() { return 111; } |
| 1004 | function anotherGetter() { return 222; } |
| 1005 | |
| 1006 | function testGetterOnProto(expected, o) { |
| 1007 | assertEquals(expected, o.quebec); |
| 1008 | } |
| 1009 | |
| 1010 | obj1 = {}; |
| 1011 | assertTrue( |
| 1012 | Reflect.defineProperty(obj1, "quebec", { get: getter, configurable: true })); |
| 1013 | obj2 = Object.create(obj1); |
| 1014 | obj3 = Object.create(obj2); |
| 1015 | |
| 1016 | testGetterOnProto(111, obj3); |
| 1017 | testGetterOnProto(111, obj3); |
| 1018 | %OptimizeFunctionOnNextCall(testGetterOnProto); |
| 1019 | testGetterOnProto(111, obj3); |
| 1020 | testGetterOnProto(111, obj3); |
| 1021 | |
| 1022 | assertTrue(Reflect.defineProperty(obj1, "quebec", { get: anotherGetter })); |
| 1023 | |
| 1024 | testGetterOnProto(222, obj3); |
| 1025 | testGetterOnProto(222, obj3); |
| 1026 | %OptimizeFunctionOnNextCall(testGetterOnProto); |
| 1027 | testGetterOnProto(222, obj3); |
| 1028 | testGetterOnProto(222, obj3); |
| 1029 | |
| 1030 | // An object with a setter on the prototype chain. |
| 1031 | var modifyMe; |
| 1032 | function setter(x) { modifyMe = x+1; } |
| 1033 | function anotherSetter(x) { modifyMe = x+2; } |
| 1034 | |
| 1035 | function testSetterOnProto(expected, o) { |
| 1036 | modifyMe = 333; |
| 1037 | o.romeo = 444; |
| 1038 | assertEquals(expected, modifyMe); |
| 1039 | } |
| 1040 | |
| 1041 | obj1 = {}; |
| 1042 | assertTrue( |
| 1043 | Reflect.defineProperty(obj1, "romeo", { set: setter, configurable: true })); |
| 1044 | obj2 = Object.create(obj1); |
| 1045 | obj3 = Object.create(obj2); |
| 1046 | |
| 1047 | testSetterOnProto(445, obj3); |
| 1048 | testSetterOnProto(445, obj3); |
| 1049 | %OptimizeFunctionOnNextCall(testSetterOnProto); |
| 1050 | testSetterOnProto(445, obj3); |
| 1051 | testSetterOnProto(445, obj3); |
| 1052 | |
| 1053 | assertTrue(Reflect.defineProperty(obj1, "romeo", { set: anotherSetter })); |
| 1054 | |
| 1055 | testSetterOnProto(446, obj3); |
| 1056 | testSetterOnProto(446, obj3); |
| 1057 | %OptimizeFunctionOnNextCall(testSetterOnProto); |
| 1058 | testSetterOnProto(446, obj3); |
| 1059 | testSetterOnProto(446, obj3); |
| 1060 | |
| 1061 | // Removing a setter on the prototype chain. |
| 1062 | function testSetterOnProtoStrict(o) { |
| 1063 | "use strict"; |
| 1064 | o.sierra = 12345; |
| 1065 | } |
| 1066 | |
| 1067 | obj1 = {}; |
| 1068 | assertTrue(Reflect.defineProperty(obj1, "sierra", |
| 1069 | { get: getter, set: setter, configurable: true })); |
| 1070 | obj2 = Object.create(obj1); |
| 1071 | obj3 = Object.create(obj2); |
| 1072 | |
| 1073 | testSetterOnProtoStrict(obj3); |
| 1074 | testSetterOnProtoStrict(obj3); |
| 1075 | %OptimizeFunctionOnNextCall(testSetterOnProtoStrict); |
| 1076 | testSetterOnProtoStrict(obj3); |
| 1077 | testSetterOnProtoStrict(obj3); |
| 1078 | |
| 1079 | assertTrue(Reflect.defineProperty(obj1, "sierra", |
| 1080 | { get: getter, set: undefined, configurable: true })); |
| 1081 | |
| 1082 | exception = false; |
| 1083 | try { |
| 1084 | testSetterOnProtoStrict(obj3); |
| 1085 | } catch (e) { |
| 1086 | exception = true; |
| 1087 | assertTrue(/which has only a getter/.test(e)); |
| 1088 | } |
| 1089 | assertTrue(exception); |
| 1090 | |
| 1091 | // Test assignment to a getter-only property on the prototype chain. This makes |
| 1092 | // sure that crankshaft re-checks its assumptions and doesn't rely only on type |
| 1093 | // feedback (which would be monomorphic here). |
| 1094 | |
| 1095 | function Assign(o) { |
| 1096 | o.blubb = 123; |
| 1097 | } |
| 1098 | |
| 1099 | function C() {} |
| 1100 | |
| 1101 | Assign(new C); |
| 1102 | Assign(new C); |
| 1103 | %OptimizeFunctionOnNextCall(Assign); |
| 1104 | assertTrue( |
| 1105 | Reflect.defineProperty(C.prototype, "blubb", {get: function() {return -42}})); |
| 1106 | Assign(new C); |
| 1107 | |
| 1108 | // Test that changes to the prototype of a simple constructor are not ignored, |
| 1109 | // even after creating initial instances. |
| 1110 | function C() { |
| 1111 | this.x = 23; |
| 1112 | } |
| 1113 | assertEquals(23, new C().x); |
| 1114 | C.prototype.__defineSetter__('x', function(value) { this.y = 23; }); |
| 1115 | assertEquals(void 0, new C().x); |