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| 1 // Copyright 2016 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-promise-finally --allow-natives-syntax |
| 6 |
| 7 var asyncAssertsExpected = 0; |
| 8 |
| 9 function assertUnreachable() { |
| 10 %AbortJS("Unreachable: failure"); |
| 11 } |
| 12 |
| 13 function assertAsyncRan() { |
| 14 ++asyncAssertsExpected; |
| 15 } |
| 16 |
| 17 function assertAsync(b, s) { |
| 18 if (b) { |
| 19 print(s, "succeeded"); |
| 20 } else { |
| 21 %AbortJS(s + " FAILED!"); |
| 22 } |
| 23 --asyncAssertsExpected; |
| 24 } |
| 25 |
| 26 function assertEqualsAsync(b, s) { |
| 27 if (b === s) { |
| 28 print(b, "===", s, "succeeded"); |
| 29 } else { |
| 30 %AbortJS(b + "===" + s + " FAILED!"); |
| 31 } |
| 32 --asyncAssertsExpected; |
| 33 } |
| 34 |
| 35 function assertAsyncDone(iteration) { |
| 36 var iteration = iteration || 0; |
| 37 %EnqueueMicrotask(function() { |
| 38 if (asyncAssertsExpected === 0) |
| 39 assertAsync(true, "all"); |
| 40 else if ( |
| 41 iteration > 10 // Shouldn't take more. |
| 42 ) |
| 43 assertAsync(false, "all... " + asyncAssertsExpected); |
| 44 else |
| 45 assertAsyncDone(iteration + 1); |
| 46 }); |
| 47 } |
| 48 |
| 49 (function() { |
| 50 assertThrows( |
| 51 function() { |
| 52 Promise.prototype.finally.call(5); |
| 53 }, |
| 54 TypeError |
| 55 ); |
| 56 })(); |
| 57 |
| 58 // resolve/finally/then |
| 59 (function() { |
| 60 Promise.resolve(3).finally().then( |
| 61 x => { |
| 62 assertEqualsAsync(3, x); |
| 63 }, |
| 64 assertUnreachable |
| 65 ); |
| 66 assertAsyncRan(); |
| 67 })(); |
| 68 |
| 69 // reject/finally/then |
| 70 (function() { |
| 71 Promise.reject(3).finally().then(assertUnreachable, x => { |
| 72 assertEqualsAsync(3, x); |
| 73 }); |
| 74 assertAsyncRan(); |
| 75 })(); |
| 76 |
| 77 // resolve/finally-return-notcallable/then |
| 78 (function() { |
| 79 Promise.resolve(3).finally(2).then( |
| 80 x => { |
| 81 assertEqualsAsync(3, x); |
| 82 }, |
| 83 assertUnreachable |
| 84 ); |
| 85 assertAsyncRan(); |
| 86 })(); |
| 87 |
| 88 // reject/finally-return-notcallable/then |
| 89 (function() { |
| 90 Promise.reject(3).finally(2).then( |
| 91 assertUnreachable, e => { |
| 92 assertEqualsAsync(3, e); |
| 93 }); |
| 94 assertAsyncRan(); |
| 95 })(); |
| 96 |
| 97 // reject/finally/catch |
| 98 (function() { |
| 99 Promise.reject(3).finally().catch(reason => { |
| 100 assertEqualsAsync(3, reason); |
| 101 }); |
| 102 assertAsyncRan(); |
| 103 })(); |
| 104 |
| 105 // reject/finally/then/catch |
| 106 (function() { |
| 107 Promise.reject(3).finally().then(assertUnreachable).catch(reason => { |
| 108 assertEqualsAsync(3, reason); |
| 109 }); |
| 110 assertAsyncRan(); |
| 111 })(); |
| 112 |
| 113 // resolve/then/finally/then |
| 114 (function() { |
| 115 Promise.resolve(3) |
| 116 .then(x => { |
| 117 assertEqualsAsync(3, x); |
| 118 return x; |
| 119 }) |
| 120 .finally() |
| 121 .then( |
| 122 x => { |
| 123 assertEqualsAsync(3, x); |
| 124 }, |
| 125 assertUnreachable |
| 126 ); |
| 127 assertAsyncRan(); |
| 128 assertAsyncRan(); |
| 129 })(); |
| 130 |
| 131 // reject/catch/finally/then |
| 132 (function() { |
| 133 Promise.reject(3) |
| 134 .catch(x => { |
| 135 assertEqualsAsync(3, x); |
| 136 return x; |
| 137 }) |
| 138 .finally() |
| 139 .then( |
| 140 x => { |
| 141 assertEqualsAsync(3, x); |
| 142 }, |
| 143 assertUnreachable |
| 144 ); |
| 145 assertAsyncRan(); |
| 146 assertAsyncRan(); |
| 147 })(); |
| 148 |
| 149 // resolve/finally-throw/then |
| 150 (function() { |
| 151 Promise.resolve(3) |
| 152 .finally(function onFinally() { |
| 153 assertEqualsAsync(0, arguments.length); |
| 154 throw 1; |
| 155 }) |
| 156 .then(assertUnreachable, function onRejected(reason) { |
| 157 assertEqualsAsync(1, reason); |
| 158 }); |
| 159 assertAsyncRan(); |
| 160 assertAsyncRan(); |
| 161 })(); |
| 162 |
| 163 // reject/finally-throw/then |
| 164 (function() { |
| 165 Promise.reject(3) |
| 166 .finally(function onFinally() { |
| 167 assertEqualsAsync(0, arguments.length); |
| 168 throw 1; |
| 169 }) |
| 170 .then(assertUnreachable, function onRejected(reason) { |
| 171 assertEqualsAsync(1, reason); |
| 172 }); |
| 173 assertAsyncRan(); |
| 174 assertAsyncRan(); |
| 175 })(); |
| 176 |
| 177 // resolve/finally-return/then |
| 178 (function() { |
| 179 Promise.resolve(3) |
| 180 .finally(function onFinally() { |
| 181 assertEqualsAsync(0, arguments.length); |
| 182 return 4; |
| 183 }) |
| 184 .then( |
| 185 x => { |
| 186 assertEqualsAsync(x, 3); |
| 187 }, |
| 188 assertUnreachable |
| 189 ); |
| 190 assertAsyncRan(); |
| 191 assertAsyncRan(); |
| 192 })(); |
| 193 |
| 194 // reject/finally-return/then |
| 195 (function() { |
| 196 Promise.reject(3) |
| 197 .finally(function onFinally() { |
| 198 assertEqualsAsync(0, arguments.length); |
| 199 return 4; |
| 200 }) |
| 201 .then(assertUnreachable, x => { |
| 202 assertEqualsAsync(x, 3); |
| 203 }); |
| 204 assertAsyncRan(); |
| 205 assertAsyncRan(); |
| 206 })(); |
| 207 |
| 208 // reject/catch-throw/finally-throw/then |
| 209 (function() { |
| 210 Promise.reject(3) |
| 211 .catch(e => { |
| 212 assertEqualsAsync(3, e); |
| 213 throw e; |
| 214 }) |
| 215 .finally(function onFinally() { |
| 216 assertEqualsAsync(0, arguments.length); |
| 217 throw 4; |
| 218 }) |
| 219 .then(assertUnreachable, function onRejected(e) { |
| 220 assertEqualsAsync(4, e); |
| 221 }); |
| 222 assertAsyncRan(); |
| 223 assertAsyncRan(); |
| 224 assertAsyncRan(); |
| 225 })(); |
| 226 |
| 227 // resolve/then-throw/finally-throw/then |
| 228 (function() { |
| 229 Promise.resolve(3) |
| 230 .then(e => { |
| 231 assertEqualsAsync(3, e); |
| 232 throw e; |
| 233 }) |
| 234 .finally(function onFinally() { |
| 235 assertEqualsAsync(0, arguments.length); |
| 236 throw 4; |
| 237 }) |
| 238 .then(assertUnreachable, function onRejected(e) { |
| 239 assertEqualsAsync(4, e); |
| 240 }); |
| 241 assertAsyncRan(); |
| 242 assertAsyncRan(); |
| 243 assertAsyncRan(); |
| 244 })(); |
| 245 |
| 246 // resolve/finally-return-rejected-promise/then |
| 247 (function() { |
| 248 Promise.resolve(3) |
| 249 .finally(function onFinally() { |
| 250 assertEqualsAsync(0, arguments.length); |
| 251 return Promise.reject(4); |
| 252 }) |
| 253 .then(assertUnreachable, e => { |
| 254 assertEqualsAsync(4, e); |
| 255 }); |
| 256 assertAsyncRan(); |
| 257 assertAsyncRan(); |
| 258 })(); |
| 259 |
| 260 // reject/finally-return-rejected-promise/then |
| 261 (function() { |
| 262 Promise.reject(3) |
| 263 .finally(function onFinally() { |
| 264 assertEqualsAsync(0, arguments.length); |
| 265 return Promise.reject(4); |
| 266 }) |
| 267 .then(assertUnreachable, e => { |
| 268 assertEqualsAsync(4, e); |
| 269 }); |
| 270 assertAsyncRan(); |
| 271 assertAsyncRan(); |
| 272 })(); |
| 273 |
| 274 // resolve/finally-return-resolved-promise/then |
| 275 (function() { |
| 276 Promise.resolve(3) |
| 277 .finally(function onFinally() { |
| 278 assertEqualsAsync(0, arguments.length); |
| 279 return Promise.resolve(4); |
| 280 }) |
| 281 .then( |
| 282 x => { |
| 283 assertEqualsAsync(3, x); |
| 284 }, |
| 285 assertUnreachable |
| 286 ); |
| 287 assertAsyncRan(); |
| 288 assertAsyncRan(); |
| 289 })(); |
| 290 |
| 291 // reject/finally-return-resolved-promise/then |
| 292 (function() { |
| 293 Promise.reject(3) |
| 294 .finally(function onFinally() { |
| 295 assertEqualsAsync(0, arguments.length); |
| 296 return Promise.resolve(4); |
| 297 }) |
| 298 .then(assertUnreachable, e => { |
| 299 assertEqualsAsync(3, e); |
| 300 }); |
| 301 assertAsyncRan(); |
| 302 assertAsyncRan(); |
| 303 })(); |
| 304 |
| 305 // reject/finally-return-resolved-promise/then |
| 306 (function() { |
| 307 Promise.reject(3) |
| 308 .finally(function onFinally() { |
| 309 assertEqualsAsync(0, arguments.length); |
| 310 return Promise.resolve(4); |
| 311 }) |
| 312 .then(assertUnreachable, e => { |
| 313 assertEqualsAsync(3, e); |
| 314 }); |
| 315 assertAsyncRan(); |
| 316 assertAsyncRan(); |
| 317 })(); |
| 318 |
| 319 // resolve/finally-thenable-resolve/then |
| 320 (function() { |
| 321 var thenable = { |
| 322 then: function(onResolve, onReject) { |
| 323 onResolve(5); |
| 324 } |
| 325 }; |
| 326 |
| 327 Promise.resolve(5) |
| 328 .finally(function onFinally() { |
| 329 assertEqualsAsync(0, arguments.length); |
| 330 return thenable; |
| 331 }) |
| 332 .then( |
| 333 x => { |
| 334 assertEqualsAsync(5, x); |
| 335 }, |
| 336 assertUnreachable |
| 337 ); |
| 338 |
| 339 assertAsyncRan(); |
| 340 assertAsyncRan(); |
| 341 })(); |
| 342 |
| 343 // reject/finally-thenable-resolve/then |
| 344 (function() { |
| 345 var thenable = { |
| 346 then: function(onResolve, onReject) { |
| 347 onResolve(1); |
| 348 } |
| 349 }; |
| 350 |
| 351 Promise.reject(5) |
| 352 .finally(function onFinally() { |
| 353 assertEqualsAsync(0, arguments.length); |
| 354 return thenable; |
| 355 }) |
| 356 .then(assertUnreachable, e => { |
| 357 assertEqualsAsync(5, e); |
| 358 }); |
| 359 |
| 360 assertAsyncRan(); |
| 361 assertAsyncRan(); |
| 362 })(); |
| 363 |
| 364 // reject/finally-thenable-reject/then |
| 365 (function() { |
| 366 var thenable = { |
| 367 then: function(onResolve, onReject) { |
| 368 onReject(1); |
| 369 } |
| 370 }; |
| 371 |
| 372 Promise.reject(5) |
| 373 .finally(function onFinally() { |
| 374 assertEqualsAsync(0, arguments.length); |
| 375 return thenable; |
| 376 }) |
| 377 .then(assertUnreachable, e => { |
| 378 assertEqualsAsync(1, e); |
| 379 }); |
| 380 |
| 381 assertAsyncRan(); |
| 382 assertAsyncRan(); |
| 383 })(); |
| 384 |
| 385 // resolve/finally-thenable-reject/then |
| 386 (function() { |
| 387 var thenable = { |
| 388 then: function(onResolve, onReject) { |
| 389 onReject(1); |
| 390 } |
| 391 }; |
| 392 |
| 393 Promise.resolve(5) |
| 394 .finally(function onFinally() { |
| 395 assertEqualsAsync(0, arguments.length); |
| 396 return thenable; |
| 397 }) |
| 398 .then(assertUnreachable, e => { |
| 399 assertEqualsAsync(1, e); |
| 400 }); |
| 401 |
| 402 assertAsyncRan(); |
| 403 assertAsyncRan(); |
| 404 })(); |
| 405 |
| 406 // resolve/finally/finally/then |
| 407 (function() { |
| 408 Promise.resolve(5) |
| 409 .finally(function onFinally() { |
| 410 assertEqualsAsync(0, arguments.length); |
| 411 }) |
| 412 .finally(function onFinally() { |
| 413 assertEqualsAsync(0, arguments.length); |
| 414 }) |
| 415 .then( |
| 416 x => { |
| 417 assertEqualsAsync(5, x); |
| 418 }, |
| 419 assertUnreachable |
| 420 ); |
| 421 |
| 422 assertAsyncRan(); |
| 423 assertAsyncRan(); |
| 424 assertAsyncRan(); |
| 425 })(); |
| 426 |
| 427 // resolve/finally-throw/finally/then |
| 428 (function() { |
| 429 Promise.resolve(5) |
| 430 .finally(function onFinally() { |
| 431 assertEqualsAsync(0, arguments.length); |
| 432 throw 1; |
| 433 }) |
| 434 .finally(function onFinally() { |
| 435 assertEqualsAsync(0, arguments.length); |
| 436 }) |
| 437 .then(assertUnreachable, e => { |
| 438 assertEqualsAsync(1, e); |
| 439 }); |
| 440 |
| 441 assertAsyncRan(); |
| 442 assertAsyncRan(); |
| 443 assertAsyncRan(); |
| 444 })(); |
| 445 |
| 446 // resolve/finally-return-rejected-promise/finally/then |
| 447 (function() { |
| 448 Promise.resolve(5) |
| 449 .finally(function onFinally() { |
| 450 assertEqualsAsync(0, arguments.length); |
| 451 return Promise.reject(1); |
| 452 }) |
| 453 .finally(function onFinally() { |
| 454 assertEqualsAsync(0, arguments.length); |
| 455 }) |
| 456 .then(assertUnreachable, e => { |
| 457 assertEqualsAsync(1, e); |
| 458 }); |
| 459 |
| 460 assertAsyncRan(); |
| 461 assertAsyncRan(); |
| 462 assertAsyncRan(); |
| 463 })(); |
| 464 |
| 465 // reject/finally/finally/then |
| 466 (function() { |
| 467 Promise.reject(5) |
| 468 .finally(function onFinally() { |
| 469 assertEqualsAsync(0, arguments.length); |
| 470 }) |
| 471 .finally(function onFinally() { |
| 472 assertEqualsAsync(0, arguments.length); |
| 473 }) |
| 474 .then(assertUnreachable, e => { |
| 475 assertEqualsAsync(5, e); |
| 476 }); |
| 477 |
| 478 assertAsyncRan(); |
| 479 assertAsyncRan(); |
| 480 assertAsyncRan(); |
| 481 })(); |
| 482 |
| 483 // reject/finally-throw/finally/then |
| 484 (function() { |
| 485 Promise.reject(5) |
| 486 .finally(function onFinally() { |
| 487 assertEqualsAsync(0, arguments.length); |
| 488 throw 1; |
| 489 }) |
| 490 .finally(function onFinally() { |
| 491 assertEqualsAsync(0, arguments.length); |
| 492 }) |
| 493 .then(assertUnreachable, e => { |
| 494 assertEqualsAsync(1, e); |
| 495 }); |
| 496 |
| 497 assertAsyncRan(); |
| 498 assertAsyncRan(); |
| 499 assertAsyncRan(); |
| 500 })(); |
| 501 |
| 502 // reject/finally-return-rejected-promise/finally/then |
| 503 (function() { |
| 504 Promise.reject(5) |
| 505 .finally(function onFinally() { |
| 506 assertEqualsAsync(0, arguments.length); |
| 507 return Promise.reject(1); |
| 508 }) |
| 509 .finally(function onFinally() { |
| 510 assertEqualsAsync(0, arguments.length); |
| 511 }) |
| 512 .then(assertUnreachable, e => { |
| 513 assertEqualsAsync(1, e); |
| 514 }); |
| 515 |
| 516 assertAsyncRan(); |
| 517 assertAsyncRan(); |
| 518 assertAsyncRan(); |
| 519 })(); |
| 520 |
| 521 // resolve/finally-deferred-resolve/then |
| 522 (function() { |
| 523 var resolve, reject; |
| 524 var deferred = new Promise((x, y) => { |
| 525 resolve = x; |
| 526 reject = y; |
| 527 }); |
| 528 Promise.resolve(1) |
| 529 .finally(function onFinally() { |
| 530 assertEqualsAsync(0, arguments.length); |
| 531 return deferred; |
| 532 }) |
| 533 .then( |
| 534 x => { |
| 535 assertEqualsAsync(1, x); |
| 536 }, |
| 537 assertUnreachable |
| 538 ); |
| 539 |
| 540 assertAsyncRan(); |
| 541 assertAsyncRan(); |
| 542 |
| 543 resolve(5); |
| 544 })(); |
| 545 |
| 546 // resolve/finally-deferred-reject/then |
| 547 (function() { |
| 548 var resolve, reject; |
| 549 var deferred = new Promise((x, y) => { |
| 550 resolve = x; |
| 551 reject = y; |
| 552 }); |
| 553 Promise.resolve(1) |
| 554 .finally(function onFinally() { |
| 555 assertEqualsAsync(0, arguments.length); |
| 556 return deferred; |
| 557 }) |
| 558 .then(assertUnreachable, e => { |
| 559 assertEqualsAsync(5, e); |
| 560 }); |
| 561 |
| 562 assertAsyncRan(); |
| 563 assertAsyncRan(); |
| 564 |
| 565 reject(5); |
| 566 })(); |
| 567 |
| 568 // all/finally/then |
| 569 (function() { |
| 570 var resolve, reject; |
| 571 var deferred = new Promise((x, y) => { |
| 572 resolve = x; |
| 573 reject = y; |
| 574 }); |
| 575 |
| 576 Promise.all([deferred]) |
| 577 .finally(function onFinally() { |
| 578 assertEqualsAsync(0, arguments.length); |
| 579 }) |
| 580 .then( |
| 581 ([x]) => { |
| 582 assertEqualsAsync(1, x); |
| 583 }, |
| 584 assertUnreachable |
| 585 ); |
| 586 |
| 587 assertAsyncRan(); |
| 588 assertAsyncRan(); |
| 589 |
| 590 resolve(1); |
| 591 })(); |
| 592 |
| 593 // race/finally/then |
| 594 (function() { |
| 595 var resolve, reject; |
| 596 var d1 = new Promise((x, y) => { |
| 597 resolve = x; |
| 598 reject = y; |
| 599 }); |
| 600 var d2 = new Promise((x, y) => { |
| 601 resolve = x; |
| 602 reject = y; |
| 603 }); |
| 604 |
| 605 Promise.race([d1, d2]) |
| 606 .finally(function onFinally() { |
| 607 assertEqualsAsync(0, arguments.length); |
| 608 }) |
| 609 .then( |
| 610 x => { |
| 611 assertEqualsAsync(1, x); |
| 612 }, |
| 613 assertUnreachable |
| 614 ); |
| 615 |
| 616 assertAsyncRan(); |
| 617 assertAsyncRan(); |
| 618 |
| 619 resolve(1); |
| 620 })(); |
| 621 |
| 622 // resolve/finally-customthen/then |
| 623 (function() { |
| 624 class MyPromise extends Promise { |
| 625 then(onFulfilled, onRejected) { |
| 626 assertEqualsAsync(5, onFulfilled); |
| 627 assertEqualsAsync(5, onRejected); |
| 628 return super.then(onFulfilled, onRejected); |
| 629 } |
| 630 } |
| 631 |
| 632 MyPromise.resolve(3).finally(5); |
| 633 |
| 634 assertAsyncRan(); |
| 635 assertAsyncRan(); |
| 636 })(); |
| 637 |
| 638 // reject/finally-customthen/then |
| 639 (function() { |
| 640 class MyPromise extends Promise { |
| 641 then(onFulfilled, onRejected) { |
| 642 assertEqualsAsync(5, onFulfilled); |
| 643 assertEqualsAsync(5, onRejected); |
| 644 return super.then(onFulfilled, onRejected); |
| 645 } |
| 646 } |
| 647 |
| 648 MyPromise.reject(3).finally(5); |
| 649 |
| 650 assertAsyncRan(); |
| 651 assertAsyncRan(); |
| 652 })(); |
| 653 |
| 654 var descriptor = Object.getOwnPropertyDescriptor(Promise.prototype, 'finally'); |
| 655 assertTrue(descriptor.writable); |
| 656 assertTrue(descriptor.configurable); |
| 657 assertFalse(descriptor.enumerable); |
| 658 assertEquals("finally", Promise.prototype.finally.name); |
| 659 assertEquals(1, Promise.prototype.finally.length); |
| 660 |
| 661 assertAsyncDone(); |
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