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| 1 // Copyright 2017 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-async-iteration --allow-natives-syntax |
| 6 |
| 7 let testFailed = false; |
| 8 let testFailure; |
| 9 (async function() { |
| 10 const kNext = 1; |
| 11 const kThrow = 2; |
| 12 const kReturn = 4; |
| 13 const kReturnPrimitive = kReturn | 32; |
| 14 |
| 15 function async(iterable, features = kNext, log = []) { |
| 16 // Helper to turn a synchronous iterable into an asynchronous iterable, |
| 17 // without using the [Async-from-Sync Iterator]. |
| 18 let it = iterable[Symbol.iterator](); |
| 19 let methods = { |
| 20 next(sentValue) { |
| 21 return new Promise(function(resolve, reject) { |
| 22 let {value, done} = it.next(sentValue); |
| 23 Promise.resolve(value).then(function(value) { |
| 24 log.push('.next() -> resolved ' + value); |
| 25 resolve({value, done}); |
| 26 }, function(value) { |
| 27 log.push('.next() -> rejected ' + value); |
| 28 reject(value); |
| 29 }); |
| 30 }); |
| 31 }, |
| 32 |
| 33 throw(sentValue) { |
| 34 return new Promise(function(resolve, reject) { |
| 35 let throwMethod = it.throw; |
| 36 if (typeof throwMethod !== 'function') { |
| 37 log.push('.throw(' + sentValue + ')'); |
| 38 return reject(sentValue); |
| 39 } |
| 40 |
| 41 let {value, done} = throwMethod.call(it, sentValue); |
| 42 Promise.resolve(value).then(function(value) { |
| 43 log.push('.throw() -> resolved ' + value); |
| 44 resolve({ value, done }); |
| 45 }, function(value) { |
| 46 log.push('.throw() -> rejected ' + value); |
| 47 reject(value); |
| 48 }); |
| 49 }); |
| 50 }, |
| 51 |
| 52 return(sentValue) { |
| 53 return new Promise(function(resolve, reject) { |
| 54 let returnMethod = it.return; |
| 55 if (typeof returnMethod !== 'function') { |
| 56 log.push('.return(' + sentValue + ')'); |
| 57 if ((features & kReturnPrimitive) === kReturnPrimitive) |
| 58 return resolve(sentValue); |
| 59 return resolve({value: sentValue, done: true}); |
| 60 } |
| 61 |
| 62 let {value, done} = returnMethod.call(it, sentValue); |
| 63 Promise.resolve(value).then(function(value) { |
| 64 log.push('.return() -> resolved ' + value); |
| 65 if ((features & kReturnPrimitive) === kReturnPrimitive) |
| 66 return resolve(value); |
| 67 resolve({ value, done }); |
| 68 }, function(value) { |
| 69 log.push('.return() -> rejected ' + value); |
| 70 reject(value); |
| 71 }); |
| 72 }); |
| 73 } |
| 74 }; |
| 75 |
| 76 |
| 77 return { |
| 78 [Symbol.asyncIterator]() { |
| 79 log.push('[Symbol.asyncIterator]()') |
| 80 return this; |
| 81 }, |
| 82 |
| 83 next: (features & kNext) ? methods.next : undefined, |
| 84 throw: (features & kThrow) ? methods.throw : undefined, |
| 85 return: (features & kReturn) ? methods.return : undefined |
| 86 }; |
| 87 } |
| 88 |
| 89 let testDone; |
| 90 let test; |
| 91 async function testBindingIdentifierVarDeclarationStatement() { |
| 92 let sum = 0; |
| 93 testDone = false; |
| 94 for await (var value of async([100, 200, 300, 400, 500])) sum += value; |
| 95 testDone = true; |
| 96 return sum; |
| 97 } |
| 98 |
| 99 test = testBindingIdentifierVarDeclarationStatement(); |
| 100 assertFalse(testDone); |
| 101 assertEquals(1500, await test); |
| 102 assertTrue(testDone); |
| 103 |
| 104 async function testBindingIdentifierVarDeclarationBlockStatement() { |
| 105 let sum = 0; |
| 106 testDone = false; |
| 107 for await (var value of async([100, 200, 300, 400, 500])) { |
| 108 'use strict'; |
| 109 let strict = (function() { return this === undefined; })(); |
| 110 assertFalse(strict); |
| 111 sum += value; |
| 112 } |
| 113 testDone = true; |
| 114 return sum; |
| 115 } |
| 116 |
| 117 test = testBindingIdentifierVarDeclarationBlockStatement(); |
| 118 assertFalse(testDone); |
| 119 assertEquals(1500, await test); |
| 120 assertTrue(testDone); |
| 121 |
| 122 async function testObjectBindingPatternVarDeclarationStatement() { |
| 123 let sum = 0, keys = []; |
| 124 let collection = [ |
| 125 {key: 'first', value: 10}, {key: undefined, value: 20}, {value: 30}, |
| 126 {key: 'last', value: 40} |
| 127 ]; |
| 128 testDone = false; |
| 129 for await (var {key = 'unknown', value} of async(collection)) |
| 130 keys.push(key), sum += value; |
| 131 testDone = true; |
| 132 return {keys, sum}; |
| 133 } |
| 134 |
| 135 test = testObjectBindingPatternVarDeclarationStatement(); |
| 136 assertFalse(testDone); |
| 137 assertEquals( |
| 138 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 139 assertTrue(testDone); |
| 140 |
| 141 async function testObjectBindingPatternVarDeclarationBlockStatement() { |
| 142 let sum = 0, keys = []; |
| 143 let collection = [ |
| 144 {key: 'first', value: 10}, {key: undefined, value: 20}, {value: 30}, |
| 145 {key: 'last', value: 40} |
| 146 ]; |
| 147 testDone = false; |
| 148 for await (var {key = 'unknown', value} of async(collection)) { |
| 149 'use strict'; |
| 150 let strict = (function() { return this === undefined; })(); |
| 151 assertFalse(strict); |
| 152 keys.push(key); |
| 153 sum += value; |
| 154 } |
| 155 testDone = true; |
| 156 return {keys, sum}; |
| 157 } |
| 158 |
| 159 test = testObjectBindingPatternVarDeclarationBlockStatement(); |
| 160 assertFalse(testDone); |
| 161 assertEquals( |
| 162 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 163 assertTrue(testDone); |
| 164 |
| 165 async function testArrayBindingPatternVarDeclarationStatement() { |
| 166 let sum = 0, keys = []; |
| 167 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 168 testDone = false; |
| 169 for await (var [key = 'unknown', value] of async(collection)) |
| 170 keys.push(key), sum += value; |
| 171 testDone = true; |
| 172 return {keys, sum}; |
| 173 } |
| 174 |
| 175 test = testArrayBindingPatternVarDeclarationStatement(); |
| 176 assertFalse(testDone); |
| 177 assertEquals( |
| 178 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 179 assertTrue(testDone); |
| 180 |
| 181 async function testArrayBindingPatternVarDeclarationBlockStatement() { |
| 182 let sum = 0, keys = []; |
| 183 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 184 testDone = false; |
| 185 for await (var [key = 'unknown', value] of async(collection)) { |
| 186 'use strict'; |
| 187 let strict = (function() { return this === undefined; })(); |
| 188 assertFalse(strict); |
| 189 keys.push(key); |
| 190 sum += value; |
| 191 } |
| 192 testDone = true; |
| 193 return {keys, sum}; |
| 194 } |
| 195 |
| 196 test = testArrayBindingPatternVarDeclarationBlockStatement(); |
| 197 assertFalse(testDone); |
| 198 assertEquals( |
| 199 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 200 assertTrue(testDone); |
| 201 |
| 202 // -------------------------------------------------------------------------- |
| 203 |
| 204 async function testBindingIdentifierLetDeclarationStatement() { |
| 205 let sum = 0; |
| 206 testDone = false; |
| 207 for await (let value of async([100, 200, 300, 400, 500])) sum += value; |
| 208 testDone = true; |
| 209 return sum; |
| 210 } |
| 211 |
| 212 test = testBindingIdentifierLetDeclarationStatement(); |
| 213 assertFalse(testDone); |
| 214 assertEquals(1500, await test); |
| 215 assertTrue(testDone); |
| 216 |
| 217 async function testBindingIdentifierLetDeclarationBlockStatement() { |
| 218 let sum = 0; |
| 219 testDone = false; |
| 220 for await (let value of async([100, 200, 300, 400, 500])) { |
| 221 'use strict'; |
| 222 let strict = (function() { return this === undefined; })(); |
| 223 assertFalse(strict); |
| 224 sum += value; |
| 225 } |
| 226 testDone = true; |
| 227 return sum; |
| 228 } |
| 229 |
| 230 test = testBindingIdentifierLetDeclarationBlockStatement(); |
| 231 assertFalse(testDone); |
| 232 assertEquals(1500, await test); |
| 233 assertTrue(testDone); |
| 234 |
| 235 async function testObjectBindingPatternLetDeclarationStatement() { |
| 236 let sum = 0, keys = []; |
| 237 let collection = [ |
| 238 {key: 'first', value: 10}, {key: undefined, value: 20}, {value: 30}, |
| 239 {key: 'last', value: 40} |
| 240 ]; |
| 241 testDone = false; |
| 242 for await (let {key = 'unknown', value} of async(collection)) |
| 243 keys.push(key), sum += value; |
| 244 testDone = true; |
| 245 return {keys, sum}; |
| 246 } |
| 247 |
| 248 test = testObjectBindingPatternLetDeclarationStatement(); |
| 249 assertFalse(testDone); |
| 250 assertEquals( |
| 251 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 252 assertTrue(testDone); |
| 253 |
| 254 async function testObjectBindingPatternLetDeclarationBlockStatement() { |
| 255 let sum = 0, keys = []; |
| 256 let collection = [ |
| 257 {key: 'first', value: 10}, {key: undefined, value: 20}, {value: 30}, |
| 258 {key: 'last', value: 40} |
| 259 ]; |
| 260 testDone = false; |
| 261 for await (let {key = 'unknown', value} of async(collection)) { |
| 262 'use strict'; |
| 263 let strict = (function() { return this === undefined; })(); |
| 264 assertFalse(strict); |
| 265 keys.push(key); |
| 266 sum += value; |
| 267 } |
| 268 testDone = true; |
| 269 return {keys, sum}; |
| 270 } |
| 271 |
| 272 let threwEarly = false; |
| 273 test = testObjectBindingPatternLetDeclarationBlockStatement(); |
| 274 assertFalse(testDone); |
| 275 assertEquals( |
| 276 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 277 assertTrue(testDone); |
| 278 |
| 279 async function testObjectBindingPatternTDZLetDeclarationStatement() { |
| 280 // See https://codereview.chromium.org/1218543003 |
| 281 let sum = 0; |
| 282 testDone = false; |
| 283 let value = { value: 1 }; |
| 284 try { |
| 285 for await (let {value} of async([value])) sum += value; |
| 286 } catch (error) { |
| 287 threwEarly = true; |
| 288 throw { sum, error, toString() { return 'TestError' } }; |
| 289 } |
| 290 } |
| 291 |
| 292 test = testObjectBindingPatternTDZLetDeclarationStatement(); |
| 293 assertTrue(threwEarly, 'Async function promise should be rejected'); |
| 294 try { |
| 295 await test; |
| 296 } catch (e) { |
| 297 assertEquals('TestError', e.toString()); |
| 298 assertEquals(0, e.sum); |
| 299 assertInstanceof(e.error, ReferenceError); |
| 300 testDone = true; |
| 301 } |
| 302 assertTrue(testDone, 'Awaited promise should be rejected'); |
| 303 |
| 304 async function testObjectBindingPatternTDZLetDeclarationBlockStatement() { |
| 305 // See https://codereview.chromium.org/1218543003 |
| 306 let sum = 0; |
| 307 testDone = false; |
| 308 let value = { value: 1 }; |
| 309 try { |
| 310 for await (let {value} of async([value])) { |
| 311 sum += value; |
| 312 } |
| 313 } catch (error) { |
| 314 threwEarly = true; |
| 315 throw { sum, error, toString() { return 'TestError' } }; |
| 316 } |
| 317 } |
| 318 |
| 319 threwEarly = false; |
| 320 test = testObjectBindingPatternTDZLetDeclarationBlockStatement(); |
| 321 assertTrue(threwEarly, 'Async function promise should be rejected'); |
| 322 try { |
| 323 await test; |
| 324 } catch (e) { |
| 325 assertEquals('TestError', e.toString()); |
| 326 assertEquals(0, e.sum); |
| 327 assertInstanceof(e.error, ReferenceError); |
| 328 testDone = true; |
| 329 } |
| 330 assertTrue(testDone, 'Awaited promise should be rejected'); |
| 331 |
| 332 async function testArrayBindingPatternLetDeclarationStatement() { |
| 333 let sum = 0, keys = []; |
| 334 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 335 testDone = false; |
| 336 for await (let [key = 'unknown', value] of async(collection)) |
| 337 keys.push(key), sum += value; |
| 338 testDone = true; |
| 339 return {keys, sum}; |
| 340 } |
| 341 |
| 342 test = testArrayBindingPatternLetDeclarationStatement(); |
| 343 assertFalse(testDone); |
| 344 assertEquals( |
| 345 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 346 assertTrue(testDone); |
| 347 |
| 348 async function testArrayBindingPatternLetDeclarationBlockStatement() { |
| 349 let sum = 0, keys = []; |
| 350 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 351 testDone = false; |
| 352 for await (let [key = 'unknown', value] of async(collection)) { |
| 353 'use strict'; |
| 354 let strict = (function() { return this === undefined; })(); |
| 355 assertFalse(strict); |
| 356 keys.push(key); |
| 357 sum += value; |
| 358 } |
| 359 testDone = true; |
| 360 return {keys, sum}; |
| 361 } |
| 362 |
| 363 test = testArrayBindingPatternLetDeclarationBlockStatement(); |
| 364 assertFalse(testDone); |
| 365 assertEquals( |
| 366 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 367 assertTrue(testDone); |
| 368 |
| 369 async function testArrayBindingPatternTDZLetDeclarationStatement() { |
| 370 // See https://codereview.chromium.org/1218543003 |
| 371 let sum = 0; |
| 372 testDone = false; |
| 373 let value = [1]; |
| 374 try { |
| 375 for await (let [value] of async([value])) sum += value; |
| 376 } catch (error) { |
| 377 threwEarly = true; |
| 378 throw { sum, error, toString() { return 'TestError' } }; |
| 379 } |
| 380 } |
| 381 |
| 382 threwEarly = false; |
| 383 test = testArrayBindingPatternTDZLetDeclarationStatement(); |
| 384 assertTrue(threwEarly, 'Async function promise should be rejected'); |
| 385 try { |
| 386 await test; |
| 387 } catch (e) { |
| 388 assertEquals('TestError', e.toString()); |
| 389 assertEquals(0, e.sum); |
| 390 assertInstanceof(e.error, ReferenceError); |
| 391 testDone = true; |
| 392 } |
| 393 assertTrue(testDone, 'Awaited promise should be rejected'); |
| 394 |
| 395 async function testArrayBindingPatternTDZLetDeclarationBlockStatement() { |
| 396 // See https://codereview.chromium.org/1218543003 |
| 397 let sum = 0; |
| 398 testDone = false; |
| 399 let value = [1]; |
| 400 try { |
| 401 for await (let [value] of async([value])) { |
| 402 sum += value; |
| 403 } |
| 404 } catch (error) { |
| 405 threwEarly = true; |
| 406 throw { sum, error, toString() { return 'TestError' } }; |
| 407 } |
| 408 } |
| 409 |
| 410 threwEarly = false; |
| 411 test = testArrayBindingPatternTDZLetDeclarationBlockStatement(); |
| 412 assertTrue(threwEarly, 'Async function promise should be rejected'); |
| 413 try { |
| 414 await test; |
| 415 } catch (e) { |
| 416 assertEquals('TestError', e.toString()); |
| 417 assertEquals(0, e.sum); |
| 418 assertInstanceof(e.error, ReferenceError); |
| 419 testDone = true; |
| 420 } |
| 421 assertTrue(testDone, 'Awaited promise should be rejected'); |
| 422 |
| 423 // -------------------------------------------------------------------------- |
| 424 |
| 425 async function testBindingIdentifierConstDeclarationStatement() { |
| 426 let sum = 0; |
| 427 testDone = false; |
| 428 for await (let value of async([100, 200, 300, 400, 500])) sum += value; |
| 429 testDone = true; |
| 430 return sum; |
| 431 } |
| 432 |
| 433 test = testBindingIdentifierConstDeclarationStatement(); |
| 434 assertFalse(testDone); |
| 435 assertEquals(1500, await test); |
| 436 assertTrue(testDone); |
| 437 |
| 438 async function testBindingIdentifierConstDeclarationBlockStatement() { |
| 439 let sum = 0; |
| 440 testDone = false; |
| 441 for await (const value of async([100, 200, 300, 400, 500])) { |
| 442 'use strict'; |
| 443 let strict = (function() { return this === undefined; })(); |
| 444 assertFalse(strict); |
| 445 sum += value; |
| 446 } |
| 447 testDone = true; |
| 448 return sum; |
| 449 } |
| 450 |
| 451 test = testBindingIdentifierConstDeclarationBlockStatement(); |
| 452 assertFalse(testDone); |
| 453 assertEquals(1500, await test); |
| 454 assertTrue(testDone); |
| 455 |
| 456 async function testObjectBindingPatternConstDeclarationStatement() { |
| 457 let sum = 0, keys = []; |
| 458 let collection = [ |
| 459 {key: 'first', value: 10}, {key: undefined, value: 20}, {value: 30}, |
| 460 {key: 'last', value: 40} |
| 461 ]; |
| 462 testDone = false; |
| 463 for await (const {key = 'unknown', value} of async(collection)) |
| 464 keys.push(key), sum += value; |
| 465 testDone = true; |
| 466 return {keys, sum}; |
| 467 } |
| 468 |
| 469 test = testObjectBindingPatternConstDeclarationStatement(); |
| 470 assertFalse(testDone); |
| 471 assertEquals( |
| 472 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 473 assertTrue(testDone); |
| 474 |
| 475 async function testObjectBindingPatternConstDeclarationBlockStatement() { |
| 476 let sum = 0, keys = []; |
| 477 let collection = [ |
| 478 {key: 'first', value: 10}, {key: undefined, value: 20}, {value: 30}, |
| 479 {key: 'last', value: 40} |
| 480 ]; |
| 481 testDone = false; |
| 482 for await (const {key = 'unknown', value} of async(collection)) { |
| 483 'use strict'; |
| 484 let strict = (function() { return this === undefined; })(); |
| 485 assertFalse(strict); |
| 486 keys.push(key); |
| 487 sum += value; |
| 488 } |
| 489 testDone = true; |
| 490 return {keys, sum}; |
| 491 } |
| 492 |
| 493 test = testObjectBindingPatternConstDeclarationBlockStatement(); |
| 494 assertFalse(testDone); |
| 495 assertEquals( |
| 496 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 497 assertTrue(testDone); |
| 498 |
| 499 async function testObjectBindingPatternTDZConstDeclarationStatement() { |
| 500 // See https://codereview.chromium.org/1218543003 |
| 501 let sum = 0; |
| 502 testDone = false; |
| 503 const value = { value: 1 }; |
| 504 try { |
| 505 for await (const {value} of async([value])) sum += value; |
| 506 } catch (error) { |
| 507 threwEarly = true; |
| 508 throw { sum, error, toString() { return 'TestError' } }; |
| 509 } |
| 510 } |
| 511 |
| 512 threwEarly = false; |
| 513 test = testObjectBindingPatternTDZConstDeclarationStatement(); |
| 514 assertTrue(threwEarly, 'Async function promise should be rejected'); |
| 515 try { |
| 516 await test; |
| 517 } catch (e) { |
| 518 assertEquals('TestError', e.toString()); |
| 519 assertEquals(0, e.sum); |
| 520 assertInstanceof(e.error, ReferenceError); |
| 521 testDone = true; |
| 522 } |
| 523 assertTrue(testDone, 'Awaited promise should be rejected'); |
| 524 |
| 525 async function testObjectBindingPatternTDZConstDeclarationBlockStatement() { |
| 526 // See https://codereview.chromium.org/1218543003 |
| 527 let sum = 0; |
| 528 testDone = false; |
| 529 const value = { value: 1 }; |
| 530 try { |
| 531 for await (const {value} of async([value])) { |
| 532 sum += value; |
| 533 } |
| 534 } catch (error) { |
| 535 threwEarly = true; |
| 536 throw { sum, error, toString() { return 'TestError' } }; |
| 537 } |
| 538 } |
| 539 |
| 540 threwEarly = false; |
| 541 test = testObjectBindingPatternTDZConstDeclarationBlockStatement(); |
| 542 assertTrue(threwEarly, 'Async function promise should be rejected'); |
| 543 try { |
| 544 await test; |
| 545 } catch (e) { |
| 546 assertEquals('TestError', e.toString()); |
| 547 assertEquals(0, e.sum); |
| 548 assertInstanceof(e.error, ReferenceError); |
| 549 testDone = true; |
| 550 } |
| 551 assertTrue(testDone, 'Awaited promise should be rejected'); |
| 552 |
| 553 async function testArrayBindingPatternConstDeclarationStatement() { |
| 554 let sum = 0, keys = []; |
| 555 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 556 testDone = false; |
| 557 for await (const [key = 'unknown', value] of async(collection)) |
| 558 keys.push(key), sum += value; |
| 559 testDone = true; |
| 560 return {keys, sum}; |
| 561 } |
| 562 |
| 563 test = testArrayBindingPatternConstDeclarationStatement(); |
| 564 assertFalse(testDone); |
| 565 assertEquals( |
| 566 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 567 assertTrue(testDone); |
| 568 |
| 569 async function testArrayBindingPatternConstDeclarationBlockStatement() { |
| 570 let sum = 0, keys = []; |
| 571 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 572 testDone = false; |
| 573 for await (const [key = 'unknown', value] of async(collection)) { |
| 574 'use strict'; |
| 575 let strict = (function() { return this === undefined; })(); |
| 576 assertFalse(strict); |
| 577 keys.push(key); |
| 578 sum += value; |
| 579 } |
| 580 testDone = true; |
| 581 return {keys, sum}; |
| 582 } |
| 583 |
| 584 test = testArrayBindingPatternLetDeclarationBlockStatement(); |
| 585 assertFalse(testDone); |
| 586 assertEquals( |
| 587 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 588 assertTrue(testDone); |
| 589 |
| 590 async function testArrayBindingPatternTDZConstDeclarationStatement() { |
| 591 // See https://codereview.chromium.org/1218543003 |
| 592 let sum = 0; |
| 593 testDone = false; |
| 594 const value = [1]; |
| 595 try { |
| 596 for await (const [value] of async([value])) sum += value; |
| 597 } catch (error) { |
| 598 threwEarly = true; |
| 599 throw { sum, error, toString() { return 'TestError' } }; |
| 600 } |
| 601 } |
| 602 |
| 603 threwEarly = false; |
| 604 test = testArrayBindingPatternTDZConstDeclarationStatement(); |
| 605 assertTrue(threwEarly, 'Async function promise should be rejected'); |
| 606 try { |
| 607 await test; |
| 608 } catch (e) { |
| 609 assertEquals('TestError', e.toString()); |
| 610 assertEquals(0, e.sum); |
| 611 assertInstanceof(e.error, ReferenceError); |
| 612 testDone = true; |
| 613 } |
| 614 assertTrue(testDone, 'Awaited promise should be rejected'); |
| 615 |
| 616 async function testArrayBindingPatternTDZConstDeclarationBlockStatement() { |
| 617 // See https://codereview.chromium.org/1218543003 |
| 618 let sum = 0; |
| 619 testDone = false; |
| 620 const value = [1]; |
| 621 try { |
| 622 for await (const [value] of async([value])) { |
| 623 sum += value; |
| 624 } |
| 625 } catch (error) { |
| 626 threwEarly = true; |
| 627 throw { sum, error, toString() { return 'TestError' } }; |
| 628 } |
| 629 } |
| 630 |
| 631 threwEarly = false; |
| 632 test = testArrayBindingPatternTDZConstDeclarationBlockStatement(); |
| 633 assertTrue(threwEarly, 'Async function promise should be rejected'); |
| 634 try { |
| 635 await test; |
| 636 } catch (e) { |
| 637 assertEquals('TestError', e.toString()); |
| 638 assertEquals(0, e.sum); |
| 639 assertInstanceof(e.error, ReferenceError); |
| 640 testDone = true; |
| 641 } |
| 642 assertTrue(testDone, 'Awaited promise should be rejected'); |
| 643 |
| 644 // -------------------------------------------------------------------------- |
| 645 |
| 646 async function testBindingIdentifierLHSStatement() { |
| 647 let sum = 0; |
| 648 let value; |
| 649 testDone = false; |
| 650 for await (value of async([100, 200, 300, 400, 500])) sum += value; |
| 651 testDone = true; |
| 652 return sum; |
| 653 } |
| 654 |
| 655 test = testBindingIdentifierLHSStatement(); |
| 656 assertFalse(testDone); |
| 657 assertEquals(1500, await test); |
| 658 assertTrue(testDone); |
| 659 |
| 660 async function testBindingIdentifierLHSBlockStatement() { |
| 661 let sum = 0; |
| 662 let value; |
| 663 testDone = false; |
| 664 for await (value of async([100, 200, 300, 400, 500])) { |
| 665 'use strict'; |
| 666 let strict = (function() { return this === undefined; })(); |
| 667 assertFalse(strict); |
| 668 sum += value; |
| 669 } |
| 670 testDone = true; |
| 671 return sum; |
| 672 } |
| 673 |
| 674 test = testBindingIdentifierLHSStatement(); |
| 675 assertFalse(testDone); |
| 676 assertEquals(1500, await test); |
| 677 assertTrue(testDone); |
| 678 |
| 679 async function testObjectBindingPatternLHSStatement() { |
| 680 let sum = 0; |
| 681 let keys = []; |
| 682 let value; |
| 683 let key; |
| 684 let collection = [ |
| 685 {key: 'first', value: 1}, {key: undefined, value: 2}, {value: 3}, |
| 686 {key: 'last', value: 4} |
| 687 ]; |
| 688 testDone = false; |
| 689 for await ({key = 'unknown', value} of async(collection)) |
| 690 keys.push(key), sum += value; |
| 691 testDone = true; |
| 692 return {keys, sum}; |
| 693 } |
| 694 |
| 695 test = testObjectBindingPatternLHSStatement(); |
| 696 assertFalse(testDone); |
| 697 assertEquals( |
| 698 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 10}, await test); |
| 699 assertTrue(testDone); |
| 700 |
| 701 async function testObjectBindingPatternLHSBlockStatement() { |
| 702 let sum = 0; |
| 703 let keys = []; |
| 704 let value; |
| 705 let key; |
| 706 let collection = [ |
| 707 {key: 'first', value: 1}, {key: undefined, value: 2}, {value: 3}, |
| 708 {key: 'last', value: 4} |
| 709 ]; |
| 710 testDone = false; |
| 711 for await ({key = 'unknown', value} of async(collection)) { |
| 712 'use strict'; |
| 713 let strict = (function() { return this === undefined; })(); |
| 714 assertFalse(strict); |
| 715 keys.push(key); |
| 716 sum += value; |
| 717 } |
| 718 testDone = true; |
| 719 return {keys, sum}; |
| 720 } |
| 721 |
| 722 test = testObjectBindingPatternLHSBlockStatement(); |
| 723 assertFalse(testDone); |
| 724 assertEquals( |
| 725 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 10}, await test); |
| 726 assertTrue(testDone); |
| 727 |
| 728 async function testArrayBindingPatternLHSStatement() { |
| 729 let sum = 0; |
| 730 let keys = []; |
| 731 let value; |
| 732 let key; |
| 733 let collection = [['first', 1], [undefined, 2], [, 3], ['last', 4]]; |
| 734 testDone = false; |
| 735 for await ([key = 'unknown', value] of async(collection)) { |
| 736 'use strict'; |
| 737 let strict = (function() { return this === undefined; })(); |
| 738 assertFalse(strict); |
| 739 keys.push(key); |
| 740 sum += value; |
| 741 } |
| 742 testDone = true; |
| 743 return {keys, sum}; |
| 744 } |
| 745 |
| 746 test = testArrayBindingPatternLHSStatement(); |
| 747 assertFalse(testDone); |
| 748 assertEquals( |
| 749 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 10}, await test); |
| 750 assertTrue(testDone); |
| 751 |
| 752 async function testArrayBindingPatternLHSBlockStatement() { |
| 753 let sum = 0; |
| 754 let keys = []; |
| 755 let value; |
| 756 let key; |
| 757 let collection = [ |
| 758 {key: 'first', value: 1}, {key: undefined, value: 2}, {value: 3}, |
| 759 {key: 'last', value: 4} |
| 760 ]; |
| 761 testDone = false; |
| 762 for await ({key = 'unknown', value} of async(collection)) { |
| 763 'use strict'; |
| 764 let strict = (function() { return this === undefined; })(); |
| 765 assertFalse(strict); |
| 766 keys.push(key); |
| 767 sum += value; |
| 768 } |
| 769 testDone = true; |
| 770 return {keys, sum}; |
| 771 } |
| 772 |
| 773 test = testArrayBindingPatternLHSBlockStatement(); |
| 774 assertFalse(testDone); |
| 775 assertEquals( |
| 776 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 10}, await test); |
| 777 assertTrue(testDone); |
| 778 |
| 779 // -------------------------------------------------------------------------- |
| 780 |
| 781 async function testBreakStatementReturnMethodNotPresent() { |
| 782 let log = []; |
| 783 let collection = [1, 2, 3, 4, 5]; |
| 784 let sum = 0; |
| 785 let i = 0; |
| 786 testDone = false; |
| 787 for await (var x of async(collection, kNext, log)) { |
| 788 sum += x; |
| 789 if (++i === 3) break; |
| 790 } |
| 791 testDone = true; |
| 792 return { sum, log }; |
| 793 } |
| 794 |
| 795 test = testBreakStatementReturnMethodNotPresent(); |
| 796 assertFalse(testDone); |
| 797 assertEquals({sum: 6, log: ['[Symbol.asyncIterator]()', |
| 798 '.next() -> resolved 1', |
| 799 '.next() -> resolved 2', |
| 800 '.next() -> resolved 3']}, |
| 801 await test); |
| 802 assertTrue(testDone); |
| 803 |
| 804 async function testBreakStatementReturnMethodPresent() { |
| 805 let log = []; |
| 806 let collection = [1, 2, 3, 4, 5]; |
| 807 let sum = 0; |
| 808 let i = 0; |
| 809 testDone = false; |
| 810 for await (var x of async(collection, kNext|kReturn, log)) { |
| 811 sum += x; |
| 812 if (++i === 2) break; |
| 813 } |
| 814 testDone = true; |
| 815 return { sum, log }; |
| 816 } |
| 817 |
| 818 test = testBreakStatementReturnMethodPresent(); |
| 819 assertFalse(testDone); |
| 820 assertEquals({sum: 3, log: ['[Symbol.asyncIterator]()', |
| 821 '.next() -> resolved 1', |
| 822 '.next() -> resolved 2', |
| 823 '.return(undefined)']}, |
| 824 await test); |
| 825 assertTrue(testDone); |
| 826 |
| 827 async function testBreakStatementReturnMethodAwaitIterResult() { |
| 828 let log = []; |
| 829 let collection = [1, 2, 3, 4, 5]; |
| 830 let sync_iter = collection[Symbol.iterator](); |
| 831 sync_iter.return = function() { |
| 832 return { |
| 833 value: new Promise(function(resolve, reject) { |
| 834 Promise.resolve().then(function() { |
| 835 resolve('break!'); |
| 836 }); |
| 837 }), |
| 838 done: true |
| 839 }; |
| 840 }; |
| 841 |
| 842 let sum = 0; |
| 843 let i = 0; |
| 844 testDone = false; |
| 845 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 846 sum += x; |
| 847 if (++i === 2) break; |
| 848 } |
| 849 testDone = true; |
| 850 return { sum, log }; |
| 851 } |
| 852 |
| 853 test = testBreakStatementReturnMethodAwaitIterResult(); |
| 854 assertFalse(testDone); |
| 855 assertEquals({sum: 3, |
| 856 log: ['[Symbol.asyncIterator]()', |
| 857 '.next() -> resolved 1', |
| 858 '.next() -> resolved 2', |
| 859 '.return() -> resolved break!' ]}, |
| 860 await test); |
| 861 assertTrue(testDone); |
| 862 |
| 863 async function testBreakStatementReturnMethodAwaitRejection(log) { |
| 864 let collection = [1, 2, 3, 4, 5]; |
| 865 let sync_iter = collection[Symbol.iterator](); |
| 866 let sum = 0; |
| 867 sync_iter.return = function() { |
| 868 return { |
| 869 value: new Promise(function(resolve, reject) { |
| 870 Promise.resolve().then(function() { |
| 871 reject('break! ' + sum); |
| 872 }); |
| 873 }), |
| 874 done: true |
| 875 }; |
| 876 }; |
| 877 |
| 878 let i = 0; |
| 879 testDone = false; |
| 880 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 881 sum += x; |
| 882 if (++i === 2) break; |
| 883 } |
| 884 return { sum, log }; |
| 885 } |
| 886 |
| 887 let log = []; |
| 888 test = testBreakStatementReturnMethodAwaitRejection(log); |
| 889 assertFalse(testDone); |
| 890 try { |
| 891 await test; |
| 892 } catch (e) { |
| 893 assertEquals(log, ['[Symbol.asyncIterator]()', |
| 894 '.next() -> resolved 1', |
| 895 '.next() -> resolved 2', |
| 896 '.return() -> rejected break! 3']); |
| 897 assertEquals('break! 3', e); |
| 898 testDone = true; |
| 899 } |
| 900 assertTrue(testDone, 'Promise should be rejected'); |
| 901 |
| 902 async function testBreakStatementReturnMethodPrimitiveValue(log) { |
| 903 let collection = [1, 2, 3, 4, 5]; |
| 904 let sync_iter = collection[Symbol.iterator](); |
| 905 sync_iter.return = function() { |
| 906 return { value: 'break! primitive!', done: true }; |
| 907 } |
| 908 let sum = 0; |
| 909 let i = 0; |
| 910 testDone = false; |
| 911 for await (var x of async(sync_iter, kNext|kReturnPrimitive, log)) { |
| 912 sum += x; |
| 913 if (++i === 2) break; |
| 914 } |
| 915 return { sum, log }; |
| 916 } |
| 917 log = []; |
| 918 test = testBreakStatementReturnMethodPrimitiveValue(log); |
| 919 assertFalse(testDone); |
| 920 try { |
| 921 await test; |
| 922 } catch (e) { |
| 923 assertEquals(['[Symbol.asyncIterator]()', |
| 924 '.next() -> resolved 1', |
| 925 '.next() -> resolved 2', |
| 926 '.return() -> resolved break! primitive!'], |
| 927 log); |
| 928 assertInstanceof(e, TypeError); |
| 929 testDone = true; |
| 930 } |
| 931 assertTrue(testDone, 'Promise should be rejected'); |
| 932 |
| 933 async function testReturnStatementReturnMethodNotPresent() { |
| 934 let log = []; |
| 935 let collection = [1, 2, 3, 4, 5]; |
| 936 let sum = 0; |
| 937 let i = 0; |
| 938 testDone = false; |
| 939 for await (var x of async(collection, kNext, log)) { |
| 940 sum += x; |
| 941 if (++i === 3) { |
| 942 testDone = true; |
| 943 return { sum, log }; |
| 944 } |
| 945 } |
| 946 } |
| 947 |
| 948 test = testReturnStatementReturnMethodNotPresent(); |
| 949 assertFalse(testDone); |
| 950 assertEquals({sum: 6, log: ['[Symbol.asyncIterator]()', |
| 951 '.next() -> resolved 1', |
| 952 '.next() -> resolved 2', |
| 953 '.next() -> resolved 3']}, |
| 954 await test); |
| 955 assertTrue(testDone); |
| 956 |
| 957 async function testReturnStatementReturnMethodPresent() { |
| 958 let log = []; |
| 959 let collection = [1, 2, 3, 4, 5]; |
| 960 let sum = 0; |
| 961 let i = 0; |
| 962 testDone = false; |
| 963 for await (var x of async(collection, kNext|kReturn, log)) { |
| 964 sum += x; |
| 965 if (++i === 2) { |
| 966 testDone = true; |
| 967 return { sum, log }; |
| 968 } |
| 969 } |
| 970 } |
| 971 |
| 972 test = testReturnStatementReturnMethodPresent(); |
| 973 assertFalse(testDone); |
| 974 assertEquals({sum: 3, log: ['[Symbol.asyncIterator]()', |
| 975 '.next() -> resolved 1', |
| 976 '.next() -> resolved 2', |
| 977 '.return(undefined)']}, |
| 978 await test); |
| 979 assertTrue(testDone); |
| 980 |
| 981 async function testReturnStatementReturnMethodAwaitIterResult() { |
| 982 let log = []; |
| 983 let collection = [1, 2, 3, 4, 5]; |
| 984 let sync_iter = collection[Symbol.iterator](); |
| 985 sync_iter.return = function() { |
| 986 return { |
| 987 value: new Promise(function(resolve, reject) { |
| 988 // TODO(caitp): This does not work with the current implementation of |
| 989 // return statements in AsyncFunctions, which desugar to simply |
| 990 // resolving the internal .promise variable, without waiting for |
| 991 // IteratorClose to do its work. |
| 992 //Promise.resolve().then(function() { |
| 993 testDone = true; |
| 994 resolve('return!'); |
| 995 //}); |
| 996 }), |
| 997 done: true |
| 998 }; |
| 999 }; |
| 1000 |
| 1001 let sum = 0; |
| 1002 let i = 0; |
| 1003 testDone = false; |
| 1004 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 1005 sum += x; |
| 1006 if (++i === 2) return { sum, log }; |
| 1007 } |
| 1008 } |
| 1009 |
| 1010 test = testReturnStatementReturnMethodAwaitIterResult(); |
| 1011 assertFalse(testDone); |
| 1012 assertEquals({sum: 3, |
| 1013 log: ['[Symbol.asyncIterator]()', |
| 1014 '.next() -> resolved 1', |
| 1015 '.next() -> resolved 2', |
| 1016 '.return() -> resolved return!' ]}, |
| 1017 await test); |
| 1018 assertTrue(testDone); |
| 1019 |
| 1020 async function testReturnStatementReturnMethodAwaitRejection(log) { |
| 1021 let collection = [1, 2, 3, 4, 5]; |
| 1022 let sync_iter = collection[Symbol.iterator](); |
| 1023 let sum = 0; |
| 1024 sync_iter.return = function() { |
| 1025 return { |
| 1026 value: new Promise(function(resolve, reject) { |
| 1027 Promise.resolve().then(function() { |
| 1028 reject('return! ' + sum); |
| 1029 }); |
| 1030 }), |
| 1031 done: true |
| 1032 }; |
| 1033 }; |
| 1034 |
| 1035 let i = 0; |
| 1036 testDone = false; |
| 1037 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 1038 sum += x; |
| 1039 if (++i === 2) return { sum, log }; |
| 1040 } |
| 1041 } |
| 1042 |
| 1043 // TODO(caitp): This does not work with the current implementation of return |
| 1044 // statements in AsyncFunctions, which desugar to simply resolving. This |
| 1045 // prevents the rejection in IteratorClose from taking any effect. |
| 1046 // |
| 1047 // log = []; |
| 1048 // test = testReturnStatementReturnMethodAwaitRejection(log); |
| 1049 // assertFalse(testDone); |
| 1050 // try { |
| 1051 // await test; |
| 1052 // } catch (e) { |
| 1053 // assertEquals('return! 3', e); |
| 1054 // assertEquals(['[Symbol.asyncIterator]()', |
| 1055 // '.next() -> resolved 1', |
| 1056 // '.next() -> resolved 2', |
| 1057 // '.return() -> rejected return! 3'], |
| 1058 // log); |
| 1059 // testDone = true; |
| 1060 // } |
| 1061 // assertTrue(testDone, 'Promise should be rejected'); |
| 1062 |
| 1063 async function testReturnStatementReturnMethodPrimitiveValue(log) { |
| 1064 let collection = [1, 2, 3, 4, 5]; |
| 1065 let sync_iter = collection[Symbol.iterator](); |
| 1066 sync_iter.return = function() { |
| 1067 return { value: 'return! primitive!', done: true }; |
| 1068 } |
| 1069 let sum = 0; |
| 1070 let i = 0; |
| 1071 testDone = false; |
| 1072 for await (var x of async(sync_iter, kNext|kReturnPrimitive, log)) { |
| 1073 sum += x; |
| 1074 if (++i === 2) break; |
| 1075 } |
| 1076 return { sum, log }; |
| 1077 } |
| 1078 log = []; |
| 1079 test = testReturnStatementReturnMethodPrimitiveValue(log); |
| 1080 assertFalse(testDone); |
| 1081 try { |
| 1082 await test; |
| 1083 } catch (e) { |
| 1084 assertEquals(['[Symbol.asyncIterator]()', |
| 1085 '.next() -> resolved 1', |
| 1086 '.next() -> resolved 2', |
| 1087 '.return() -> resolved return! primitive!'], |
| 1088 log); |
| 1089 assertInstanceof(e, TypeError); |
| 1090 testDone = true; |
| 1091 } |
| 1092 assertTrue(testDone, 'Promise should be rejected'); |
| 1093 |
| 1094 async function testThrowStatementReturnMethodNotPresent() { |
| 1095 let log = []; |
| 1096 let collection = [1, 2, 3, 4, 5]; |
| 1097 let sum = 0; |
| 1098 let i = 0; |
| 1099 testDone = false; |
| 1100 for await (var x of async(collection, kNext|kThrow, log)) { |
| 1101 sum += x; |
| 1102 if (++i === 3) { |
| 1103 throw { sum, log, toString() { return 'TestError'; } }; |
| 1104 } |
| 1105 } |
| 1106 return { sum, log }; |
| 1107 } |
| 1108 |
| 1109 test = testThrowStatementReturnMethodNotPresent(); |
| 1110 assertFalse(testDone); |
| 1111 try { |
| 1112 await test; |
| 1113 } catch (e) { |
| 1114 assertEquals('TestError', e.toString()); |
| 1115 assertEquals(6, e.sum); |
| 1116 assertEquals(['[Symbol.asyncIterator]()', '.next() -> resolved 1', |
| 1117 '.next() -> resolved 2', '.next() -> resolved 3' |
| 1118 ], e.log); |
| 1119 testDone = true; |
| 1120 } |
| 1121 assertTrue(testDone, 'Awaited Promise should be rejected'); |
| 1122 |
| 1123 async function testThrowStatementReturnMethodPresent() { |
| 1124 let log = []; |
| 1125 let collection = [1, 2, 3, 4, 5]; |
| 1126 let sum = 0; |
| 1127 let i = 0; |
| 1128 testDone = false; |
| 1129 for await (var x of async(collection, kNext|kThrow|kReturn, log)) { |
| 1130 sum += x; |
| 1131 if (++i === 2) { |
| 1132 throw { sum, log, toString() { return 'TestError2'; } }; |
| 1133 } |
| 1134 } |
| 1135 return { sum, log }; |
| 1136 } |
| 1137 |
| 1138 test = testThrowStatementReturnMethodPresent(); |
| 1139 assertFalse(testDone); |
| 1140 try { |
| 1141 await test; |
| 1142 } catch (e) { |
| 1143 assertEquals('TestError2', e.toString()); |
| 1144 assertEquals(3, e.sum); |
| 1145 assertEquals(['[Symbol.asyncIterator]()', '.next() -> resolved 1', |
| 1146 '.next() -> resolved 2', '.return(undefined)' |
| 1147 ], e.log); |
| 1148 testDone = true; |
| 1149 } |
| 1150 assertTrue(testDone, 'Awaited Promise should be rejected'); |
| 1151 |
| 1152 async function testThrowStatementReturnMethodAwaitIterResult(log) { |
| 1153 let collection = [1, 2, 3, 4, 5]; |
| 1154 let sync_iter = collection[Symbol.iterator](); |
| 1155 sync_iter.return = function() { |
| 1156 return { |
| 1157 value: new Promise(function(resolve, reject) { |
| 1158 Promise.resolve().then(function() { |
| 1159 testDone = true; |
| 1160 resolve('throw!'); |
| 1161 }); |
| 1162 }), |
| 1163 done: true |
| 1164 }; |
| 1165 }; |
| 1166 |
| 1167 let sum = 0; |
| 1168 let i = 0; |
| 1169 testDone = false; |
| 1170 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 1171 sum += x; |
| 1172 if (++i === 2) throw 'Boo!!'; |
| 1173 } |
| 1174 } |
| 1175 |
| 1176 log = []; |
| 1177 test = testThrowStatementReturnMethodAwaitIterResult(log); |
| 1178 assertFalse(testDone); |
| 1179 |
| 1180 try { |
| 1181 await test; |
| 1182 } catch (e) { |
| 1183 assertEquals('Boo!!', e); |
| 1184 assertEquals(['[Symbol.asyncIterator]()', |
| 1185 '.next() -> resolved 1', |
| 1186 '.next() -> resolved 2', |
| 1187 '.return() -> resolved throw!' ], log); |
| 1188 testDone = true; |
| 1189 } |
| 1190 assertTrue(testDone, 'Awaited Promise should be rejected'); |
| 1191 |
| 1192 async function testThrowStatementReturnMethodAwaitRejection(log) { |
| 1193 let collection = [1, 2, 3, 4, 5]; |
| 1194 let sync_iter = collection[Symbol.iterator](); |
| 1195 let sum = 0; |
| 1196 sync_iter.return = function() { |
| 1197 return { |
| 1198 value: new Promise(function(resolve, reject) { |
| 1199 Promise.resolve().then(function() { |
| 1200 reject('return! ' + sum); |
| 1201 }); |
| 1202 }), |
| 1203 done: true |
| 1204 }; |
| 1205 }; |
| 1206 |
| 1207 let i = 0; |
| 1208 testDone = false; |
| 1209 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 1210 sum += x; |
| 1211 if (++i === 2) throw 'Boo!!'; |
| 1212 } |
| 1213 } |
| 1214 |
| 1215 log = []; |
| 1216 test = testThrowStatementReturnMethodAwaitRejection(log); |
| 1217 assertFalse(testDone); |
| 1218 try { |
| 1219 await test; |
| 1220 } catch (e) { |
| 1221 assertEquals('Boo!!', e); |
| 1222 assertEquals(['[Symbol.asyncIterator]()', |
| 1223 '.next() -> resolved 1', |
| 1224 '.next() -> resolved 2', |
| 1225 '.return() -> rejected return! 3'], |
| 1226 log); |
| 1227 testDone = true; |
| 1228 } |
| 1229 assertTrue(testDone, 'Promise should be rejected'); |
| 1230 |
| 1231 async function testThrowStatementReturnMethodPrimitiveValue(log) { |
| 1232 let collection = [1, 2, 3, 4, 5]; |
| 1233 let sync_iter = collection[Symbol.iterator](); |
| 1234 sync_iter.return = function() { |
| 1235 return { value: 'return! primitive!', done: true }; |
| 1236 } |
| 1237 let sum = 0; |
| 1238 let i = 0; |
| 1239 testDone = false; |
| 1240 for await (var x of async(sync_iter, kNext|kReturnPrimitive, log)) { |
| 1241 sum += x; |
| 1242 if (++i === 2) throw 'Boo!!'; |
| 1243 } |
| 1244 } |
| 1245 log = []; |
| 1246 test = testThrowStatementReturnMethodPrimitiveValue(log); |
| 1247 assertFalse(testDone); |
| 1248 try { |
| 1249 await test; |
| 1250 } catch (e) { |
| 1251 assertEquals(['[Symbol.asyncIterator]()', |
| 1252 '.next() -> resolved 1', |
| 1253 '.next() -> resolved 2', |
| 1254 '.return() -> resolved return! primitive!'], |
| 1255 log); |
| 1256 |
| 1257 // AsyncIteratorClose does not require Throw completions to be of type |
| 1258 // Object |
| 1259 assertEquals('Boo!!', e); |
| 1260 testDone = true; |
| 1261 } |
| 1262 assertTrue(testDone, 'Promise should be rejected'); |
| 1263 })().catch(function(error) { |
| 1264 testFailed = true; |
| 1265 testFailure = error; |
| 1266 }); |
| 1267 |
| 1268 %RunMicrotasks(); |
| 1269 |
| 1270 if (testFailed) { |
| 1271 throw testFailure; |
| 1272 } |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2637403008:
[async-iteration] add support for for-await-of loops in Async Functions (Closed)
