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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 test = testObjectBindingPatternLetDeclarationBlockStatement(); |
| 273 assertFalse(testDone); |
| 274 assertEquals( |
| 275 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 276 assertTrue(testDone); |
| 277 |
| 278 async function testObjectBindingPatternTDZLetDeclarationStatement() { |
| 279 // See https://codereview.chromium.org/1218543003 |
| 280 let sum = 0; |
| 281 testDone = false; |
| 282 let value = { value: 1 }; |
| 283 try { |
| 284 for await (let {value} of async([value])) sum += value; |
| 285 } catch (error) { |
| 286 testDone = true; |
| 287 throw { sum, error, toString() { return 'TestError' } }; |
| 288 } |
| 289 assertUnreachable('Awaited promise should be rejected'); |
| 290 } |
| 291 |
| 292 test = testObjectBindingPatternTDZLetDeclarationStatement(); |
| 293 assertTrue(testDone); // Promise rejected before first Await |
| 294 try { |
| 295 await test; |
| 296 assertUnreachable('Awaited promise should be rejected'); |
| 297 } catch (e) { |
| 298 assertEquals('TestError', e.toString()); |
| 299 assertEquals(0, e.sum); |
| 300 assertInstanceof(e.error, ReferenceError); |
| 301 } |
| 302 |
| 303 async function testObjectBindingPatternTDZLetDeclarationBlockStatement() { |
| 304 // See https://codereview.chromium.org/1218543003 |
| 305 let sum = 0; |
| 306 testDone = false; |
| 307 let value = { value: 1 }; |
| 308 try { |
| 309 for await (let {value} of async([value])) { |
| 310 sum += value; |
| 311 } |
| 312 } catch (error) { |
| 313 testDone = true; |
| 314 throw { sum, error, toString() { return 'TestError' } }; |
| 315 } |
| 316 assertUnreachable('Awaited promise should be rejected'); |
| 317 } |
| 318 |
| 319 test = testObjectBindingPatternTDZLetDeclarationBlockStatement(); |
| 320 assertTrue(testDone); // Promise rejected before first Await |
| 321 try { |
| 322 await test; |
| 323 assertUnreachable('Awaited promise should be rejected'); |
| 324 } catch (e) { |
| 325 assertEquals('TestError', e.toString()); |
| 326 assertEquals(0, e.sum); |
| 327 assertInstanceof(e.error, ReferenceError); |
| 328 } |
| 329 |
| 330 async function testArrayBindingPatternLetDeclarationStatement() { |
| 331 let sum = 0, keys = []; |
| 332 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 333 testDone = false; |
| 334 for await (let [key = 'unknown', value] of async(collection)) |
| 335 keys.push(key), sum += value; |
| 336 testDone = true; |
| 337 return {keys, sum}; |
| 338 } |
| 339 |
| 340 test = testArrayBindingPatternLetDeclarationStatement(); |
| 341 assertFalse(testDone); |
| 342 assertEquals( |
| 343 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 344 assertTrue(testDone); |
| 345 |
| 346 async function testArrayBindingPatternLetDeclarationBlockStatement() { |
| 347 let sum = 0, keys = []; |
| 348 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 349 testDone = false; |
| 350 for await (let [key = 'unknown', value] of async(collection)) { |
| 351 'use strict'; |
| 352 let strict = (function() { return this === undefined; })(); |
| 353 assertFalse(strict); |
| 354 keys.push(key); |
| 355 sum += value; |
| 356 } |
| 357 testDone = true; |
| 358 return {keys, sum}; |
| 359 } |
| 360 |
| 361 test = testArrayBindingPatternLetDeclarationBlockStatement(); |
| 362 assertFalse(testDone); |
| 363 assertEquals( |
| 364 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 365 assertTrue(testDone); |
| 366 |
| 367 async function testArrayBindingPatternTDZLetDeclarationStatement() { |
| 368 // See https://codereview.chromium.org/1218543003 |
| 369 let sum = 0; |
| 370 testDone = false; |
| 371 let value = [1]; |
| 372 try { |
| 373 for await (let [value] of async([value])) sum += value; |
| 374 } catch (error) { |
| 375 testDone = true; |
| 376 throw { sum, error, toString() { return 'TestError' } }; |
| 377 } |
| 378 assertUnreachable('Awaited promise should be rejected'); |
| 379 } |
| 380 |
| 381 test = testArrayBindingPatternTDZLetDeclarationStatement(); |
| 382 assertTrue(testDone); // Promise rejected before first Await |
| 383 try { |
| 384 await test; |
| 385 assertUnreachable('Awaited promise should be rejected'); |
| 386 } catch (e) { |
| 387 assertEquals('TestError', e.toString()); |
| 388 assertEquals(0, e.sum); |
| 389 assertInstanceof(e.error, ReferenceError); |
| 390 } |
| 391 |
| 392 async function testArrayBindingPatternTDZLetDeclarationBlockStatement() { |
| 393 // See https://codereview.chromium.org/1218543003 |
| 394 let sum = 0; |
| 395 testDone = false; |
| 396 let value = [1]; |
| 397 try { |
| 398 for await (let [value] of async([value])) { |
| 399 sum += value; |
| 400 } |
| 401 } catch (error) { |
| 402 testDone = true; |
| 403 throw { sum, error, toString() { return 'TestError' } }; |
| 404 } |
| 405 assertUnreachable('Awaited promise should be rejected'); |
| 406 } |
| 407 |
| 408 test = testArrayBindingPatternTDZLetDeclarationBlockStatement(); |
| 409 assertTrue(testDone); // Promise rejected before first Await |
| 410 try { |
| 411 await test; |
| 412 assertUnreachable('Awaited promise should be rejected'); |
| 413 } catch (e) { |
| 414 assertEquals('TestError', e.toString()); |
| 415 assertEquals(0, e.sum); |
| 416 assertInstanceof(e.error, ReferenceError); |
| 417 } |
| 418 |
| 419 // -------------------------------------------------------------------------- |
| 420 |
| 421 async function testBindingIdentifierConstDeclarationStatement() { |
| 422 let sum = 0; |
| 423 testDone = false; |
| 424 for await (let value of async([100, 200, 300, 400, 500])) sum += value; |
| 425 testDone = true; |
| 426 return sum; |
| 427 } |
| 428 |
| 429 test = testBindingIdentifierConstDeclarationStatement(); |
| 430 assertFalse(testDone); |
| 431 assertEquals(1500, await test); |
| 432 assertTrue(testDone); |
| 433 |
| 434 async function testBindingIdentifierConstDeclarationBlockStatement() { |
| 435 let sum = 0; |
| 436 testDone = false; |
| 437 for await (const value of async([100, 200, 300, 400, 500])) { |
| 438 'use strict'; |
| 439 let strict = (function() { return this === undefined; })(); |
| 440 assertFalse(strict); |
| 441 sum += value; |
| 442 } |
| 443 testDone = true; |
| 444 return sum; |
| 445 } |
| 446 |
| 447 test = testBindingIdentifierConstDeclarationBlockStatement(); |
| 448 assertFalse(testDone); |
| 449 assertEquals(1500, await test); |
| 450 assertTrue(testDone); |
| 451 |
| 452 async function testObjectBindingPatternConstDeclarationStatement() { |
| 453 let sum = 0, keys = []; |
| 454 let collection = [ |
| 455 {key: 'first', value: 10}, {key: undefined, value: 20}, {value: 30}, |
| 456 {key: 'last', value: 40} |
| 457 ]; |
| 458 testDone = false; |
| 459 for await (const {key = 'unknown', value} of async(collection)) |
| 460 keys.push(key), sum += value; |
| 461 testDone = true; |
| 462 return {keys, sum}; |
| 463 } |
| 464 |
| 465 test = testObjectBindingPatternConstDeclarationStatement(); |
| 466 assertFalse(testDone); |
| 467 assertEquals( |
| 468 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 469 assertTrue(testDone); |
| 470 |
| 471 async function testObjectBindingPatternConstDeclarationBlockStatement() { |
| 472 let sum = 0, keys = []; |
| 473 let collection = [ |
| 474 {key: 'first', value: 10}, {key: undefined, value: 20}, {value: 30}, |
| 475 {key: 'last', value: 40} |
| 476 ]; |
| 477 testDone = false; |
| 478 for await (const {key = 'unknown', value} of async(collection)) { |
| 479 'use strict'; |
| 480 let strict = (function() { return this === undefined; })(); |
| 481 assertFalse(strict); |
| 482 keys.push(key); |
| 483 sum += value; |
| 484 } |
| 485 testDone = true; |
| 486 return {keys, sum}; |
| 487 } |
| 488 |
| 489 test = testObjectBindingPatternConstDeclarationBlockStatement(); |
| 490 assertFalse(testDone); |
| 491 assertEquals( |
| 492 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 493 assertTrue(testDone); |
| 494 |
| 495 async function testObjectBindingPatternTDZConstDeclarationStatement() { |
| 496 // See https://codereview.chromium.org/1218543003 |
| 497 let sum = 0; |
| 498 testDone = false; |
| 499 const value = { value: 1 }; |
| 500 try { |
| 501 for await (const {value} of async([value])) sum += value; |
| 502 } catch (error) { |
| 503 testDone = true; |
| 504 throw { sum, error, toString() { return 'TestError' } }; |
| 505 } |
| 506 assertUnreachable('Awaited promise should be rejected'); |
| 507 } |
| 508 |
| 509 test = testObjectBindingPatternTDZConstDeclarationStatement(); |
| 510 assertTrue(testDone); // Promise rejected before first Await |
| 511 try { |
| 512 await test; |
| 513 assertUnreachable('Awaited promise should be rejected'); |
| 514 } catch (e) { |
| 515 assertEquals('TestError', e.toString()); |
| 516 assertEquals(0, e.sum); |
| 517 assertInstanceof(e.error, ReferenceError); |
| 518 } |
| 519 |
| 520 async function testObjectBindingPatternTDZConstDeclarationBlockStatement() { |
| 521 // See https://codereview.chromium.org/1218543003 |
| 522 let sum = 0; |
| 523 testDone = false; |
| 524 const value = { value: 1 }; |
| 525 try { |
| 526 for await (const {value} of async([value])) { |
| 527 sum += value; |
| 528 } |
| 529 } catch (error) { |
| 530 testDone = true; |
| 531 throw { sum, error, toString() { return 'TestError' } }; |
| 532 } |
| 533 assertUnreachable('Awaited promise should be rejected'); |
| 534 } |
| 535 |
| 536 test = testObjectBindingPatternTDZConstDeclarationBlockStatement(); |
| 537 assertTrue(testDone); // Promise rejected before first Await |
| 538 try { |
| 539 await test; |
| 540 assertUnreachable('Awaited promise should be rejected'); |
| 541 } catch (e) { |
| 542 assertEquals('TestError', e.toString()); |
| 543 assertEquals(0, e.sum); |
| 544 assertInstanceof(e.error, ReferenceError); |
| 545 } |
| 546 |
| 547 async function testArrayBindingPatternConstDeclarationStatement() { |
| 548 let sum = 0, keys = []; |
| 549 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 550 testDone = false; |
| 551 for await (const [key = 'unknown', value] of async(collection)) |
| 552 keys.push(key), sum += value; |
| 553 testDone = true; |
| 554 return {keys, sum}; |
| 555 } |
| 556 |
| 557 test = testArrayBindingPatternConstDeclarationStatement(); |
| 558 assertFalse(testDone); |
| 559 assertEquals( |
| 560 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 561 assertTrue(testDone); |
| 562 |
| 563 async function testArrayBindingPatternConstDeclarationBlockStatement() { |
| 564 let sum = 0, keys = []; |
| 565 let collection = [['first', 10], [undefined, 20], [, 30], ['last', 40]]; |
| 566 testDone = false; |
| 567 for await (const [key = 'unknown', value] of async(collection)) { |
| 568 'use strict'; |
| 569 let strict = (function() { return this === undefined; })(); |
| 570 assertFalse(strict); |
| 571 keys.push(key); |
| 572 sum += value; |
| 573 } |
| 574 testDone = true; |
| 575 return {keys, sum}; |
| 576 } |
| 577 |
| 578 test = testArrayBindingPatternLetDeclarationBlockStatement(); |
| 579 assertFalse(testDone); |
| 580 assertEquals( |
| 581 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 100}, await test); |
| 582 assertTrue(testDone); |
| 583 |
| 584 async function testArrayBindingPatternTDZConstDeclarationStatement() { |
| 585 // See https://codereview.chromium.org/1218543003 |
| 586 let sum = 0; |
| 587 testDone = false; |
| 588 const value = [1]; |
| 589 try { |
| 590 for await (const [value] of async([value])) sum += value; |
| 591 } catch (error) { |
| 592 testDone = true; |
| 593 throw { sum, error, toString() { return 'TestError' } }; |
| 594 } |
| 595 assertUnreachable('Awaited promise should be rejected'); |
| 596 } |
| 597 |
| 598 test = testArrayBindingPatternTDZConstDeclarationStatement(); |
| 599 assertTrue(testDone); // Promise rejected before first Await |
| 600 try { |
| 601 await test; |
| 602 assertUnreachable('Awaited promise should be rejected'); |
| 603 } catch (e) { |
| 604 assertEquals('TestError', e.toString()); |
| 605 assertEquals(0, e.sum); |
| 606 assertInstanceof(e.error, ReferenceError); |
| 607 } |
| 608 |
| 609 async function testArrayBindingPatternTDZConstDeclarationBlockStatement() { |
| 610 // See https://codereview.chromium.org/1218543003 |
| 611 let sum = 0; |
| 612 testDone = false; |
| 613 const value = [1]; |
| 614 try { |
| 615 for await (const [value] of async([value])) { |
| 616 sum += value; |
| 617 } |
| 618 } catch (error) { |
| 619 testDone = true; |
| 620 throw { sum, error, toString() { return 'TestError' } }; |
| 621 } |
| 622 assertUnreachable('Awaited promise should be rejected'); |
| 623 } |
| 624 |
| 625 test = testArrayBindingPatternTDZConstDeclarationBlockStatement(); |
| 626 assertTrue(testDone); // Promise rejected before first Await |
| 627 try { |
| 628 await test; |
| 629 assertUnreachable('Awaited promise should be rejected'); |
| 630 } catch (e) { |
| 631 assertEquals('TestError', e.toString()); |
| 632 assertEquals(0, e.sum); |
| 633 assertInstanceof(e.error, ReferenceError); |
| 634 } |
| 635 |
| 636 // -------------------------------------------------------------------------- |
| 637 |
| 638 async function testBindingIdentifierLHSStatement() { |
| 639 let sum = 0; |
| 640 let value; |
| 641 testDone = false; |
| 642 for await (value of async([100, 200, 300, 400, 500])) sum += value; |
| 643 testDone = true; |
| 644 return sum; |
| 645 } |
| 646 |
| 647 test = testBindingIdentifierLHSStatement(); |
| 648 assertFalse(testDone); |
| 649 assertEquals(1500, await test); |
| 650 assertTrue(testDone); |
| 651 |
| 652 async function testBindingIdentifierLHSBlockStatement() { |
| 653 let sum = 0; |
| 654 let value; |
| 655 testDone = false; |
| 656 for await (value of async([100, 200, 300, 400, 500])) { |
| 657 'use strict'; |
| 658 let strict = (function() { return this === undefined; })(); |
| 659 assertFalse(strict); |
| 660 sum += value; |
| 661 } |
| 662 testDone = true; |
| 663 return sum; |
| 664 } |
| 665 |
| 666 test = testBindingIdentifierLHSStatement(); |
| 667 assertFalse(testDone); |
| 668 assertEquals(1500, await test); |
| 669 assertTrue(testDone); |
| 670 |
| 671 async function testObjectBindingPatternLHSStatement() { |
| 672 let sum = 0; |
| 673 let keys = []; |
| 674 let value; |
| 675 let key; |
| 676 let collection = [ |
| 677 {key: 'first', value: 1}, {key: undefined, value: 2}, {value: 3}, |
| 678 {key: 'last', value: 4} |
| 679 ]; |
| 680 testDone = false; |
| 681 for await ({key = 'unknown', value} of async(collection)) |
| 682 keys.push(key), sum += value; |
| 683 testDone = true; |
| 684 return {keys, sum}; |
| 685 } |
| 686 |
| 687 test = testObjectBindingPatternLHSStatement(); |
| 688 assertFalse(testDone); |
| 689 assertEquals( |
| 690 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 10}, await test); |
| 691 assertTrue(testDone); |
| 692 |
| 693 async function testObjectBindingPatternLHSBlockStatement() { |
| 694 let sum = 0; |
| 695 let keys = []; |
| 696 let value; |
| 697 let key; |
| 698 let collection = [ |
| 699 {key: 'first', value: 1}, {key: undefined, value: 2}, {value: 3}, |
| 700 {key: 'last', value: 4} |
| 701 ]; |
| 702 testDone = false; |
| 703 for await ({key = 'unknown', value} of async(collection)) { |
| 704 'use strict'; |
| 705 let strict = (function() { return this === undefined; })(); |
| 706 assertFalse(strict); |
| 707 keys.push(key); |
| 708 sum += value; |
| 709 } |
| 710 testDone = true; |
| 711 return {keys, sum}; |
| 712 } |
| 713 |
| 714 test = testObjectBindingPatternLHSBlockStatement(); |
| 715 assertFalse(testDone); |
| 716 assertEquals( |
| 717 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 10}, await test); |
| 718 assertTrue(testDone); |
| 719 |
| 720 async function testArrayBindingPatternLHSStatement() { |
| 721 let sum = 0; |
| 722 let keys = []; |
| 723 let value; |
| 724 let key; |
| 725 let collection = [['first', 1], [undefined, 2], [, 3], ['last', 4]]; |
| 726 testDone = false; |
| 727 for await ([key = 'unknown', value] of async(collection)) { |
| 728 'use strict'; |
| 729 let strict = (function() { return this === undefined; })(); |
| 730 assertFalse(strict); |
| 731 keys.push(key); |
| 732 sum += value; |
| 733 } |
| 734 testDone = true; |
| 735 return {keys, sum}; |
| 736 } |
| 737 |
| 738 test = testArrayBindingPatternLHSStatement(); |
| 739 assertFalse(testDone); |
| 740 assertEquals( |
| 741 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 10}, await test); |
| 742 assertTrue(testDone); |
| 743 |
| 744 async function testArrayBindingPatternLHSBlockStatement() { |
| 745 let sum = 0; |
| 746 let keys = []; |
| 747 let value; |
| 748 let key; |
| 749 let collection = [ |
| 750 {key: 'first', value: 1}, {key: undefined, value: 2}, {value: 3}, |
| 751 {key: 'last', value: 4} |
| 752 ]; |
| 753 testDone = false; |
| 754 for await ({key = 'unknown', value} of async(collection)) { |
| 755 'use strict'; |
| 756 let strict = (function() { return this === undefined; })(); |
| 757 assertFalse(strict); |
| 758 keys.push(key); |
| 759 sum += value; |
| 760 } |
| 761 testDone = true; |
| 762 return {keys, sum}; |
| 763 } |
| 764 |
| 765 test = testArrayBindingPatternLHSBlockStatement(); |
| 766 assertFalse(testDone); |
| 767 assertEquals( |
| 768 {keys: ['first', 'unknown', 'unknown', 'last'], sum: 10}, await test); |
| 769 assertTrue(testDone); |
| 770 |
| 771 // -------------------------------------------------------------------------- |
| 772 |
| 773 async function testBreakStatementReturnMethodNotPresent() { |
| 774 let log = []; |
| 775 let collection = [1, 2, 3, 4, 5]; |
| 776 let sum = 0; |
| 777 let i = 0; |
| 778 testDone = false; |
| 779 for await (var x of async(collection, kNext, log)) { |
| 780 sum += x; |
| 781 if (++i === 3) break; |
| 782 } |
| 783 testDone = true; |
| 784 return { sum, log }; |
| 785 } |
| 786 |
| 787 test = testBreakStatementReturnMethodNotPresent(); |
| 788 assertFalse(testDone); |
| 789 assertEquals({sum: 6, log: ['[Symbol.asyncIterator]()', |
| 790 '.next() -> resolved 1', |
| 791 '.next() -> resolved 2', |
| 792 '.next() -> resolved 3']}, |
| 793 await test); |
| 794 assertTrue(testDone); |
| 795 |
| 796 async function testBreakStatementReturnMethodPresent() { |
| 797 let log = []; |
| 798 let collection = [1, 2, 3, 4, 5]; |
| 799 let sum = 0; |
| 800 let i = 0; |
| 801 testDone = false; |
| 802 for await (var x of async(collection, kNext|kReturn, log)) { |
| 803 sum += x; |
| 804 if (++i === 2) break; |
| 805 } |
| 806 testDone = true; |
| 807 return { sum, log }; |
| 808 } |
| 809 |
| 810 test = testBreakStatementReturnMethodPresent(); |
| 811 assertFalse(testDone); |
| 812 assertEquals({sum: 3, log: ['[Symbol.asyncIterator]()', |
| 813 '.next() -> resolved 1', |
| 814 '.next() -> resolved 2', |
| 815 '.return(undefined)']}, |
| 816 await test); |
| 817 assertTrue(testDone); |
| 818 |
| 819 async function testBreakStatementReturnMethodAwaitIterResult() { |
| 820 let log = []; |
| 821 let collection = [1, 2, 3, 4, 5]; |
| 822 let sync_iter = collection[Symbol.iterator](); |
| 823 sync_iter.return = function() { |
| 824 return { |
| 825 value: new Promise(function(resolve, reject) { |
| 826 Promise.resolve().then(function() { |
| 827 resolve('break!'); |
| 828 }); |
| 829 }), |
| 830 done: true |
| 831 }; |
| 832 }; |
| 833 |
| 834 let sum = 0; |
| 835 let i = 0; |
| 836 testDone = false; |
| 837 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 838 sum += x; |
| 839 if (++i === 2) break; |
| 840 } |
| 841 testDone = true; |
| 842 return { sum, log }; |
| 843 } |
| 844 |
| 845 test = testBreakStatementReturnMethodAwaitIterResult(); |
| 846 assertFalse(testDone); |
| 847 assertEquals({sum: 3, |
| 848 log: ['[Symbol.asyncIterator]()', |
| 849 '.next() -> resolved 1', |
| 850 '.next() -> resolved 2', |
| 851 '.return() -> resolved break!' ]}, |
| 852 await test); |
| 853 assertTrue(testDone); |
| 854 |
| 855 async function testBreakStatementReturnMethodAwaitRejection(log) { |
| 856 let collection = [1, 2, 3, 4, 5]; |
| 857 let sync_iter = collection[Symbol.iterator](); |
| 858 let sum = 0; |
| 859 sync_iter.return = function() { |
| 860 return { |
| 861 value: new Promise(function(resolve, reject) { |
| 862 Promise.resolve().then(function() { |
| 863 testDone = true; |
| 864 reject('break! ' + sum); |
| 865 }); |
| 866 }), |
| 867 done: true |
| 868 }; |
| 869 }; |
| 870 |
| 871 let i = 0; |
| 872 testDone = false; |
| 873 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 874 sum += x; |
| 875 if (++i === 2) break; |
| 876 } |
| 877 return { sum, log }; |
| 878 } |
| 879 |
| 880 let log = []; |
| 881 test = testBreakStatementReturnMethodAwaitRejection(log); |
| 882 assertFalse(testDone); |
| 883 try { |
| 884 await test; |
| 885 assertUnreachable('Promise should be rejected'); |
| 886 } catch (e) { |
| 887 assertEquals(log, ['[Symbol.asyncIterator]()', |
| 888 '.next() -> resolved 1', |
| 889 '.next() -> resolved 2', |
| 890 '.return() -> rejected break! 3']); |
| 891 assertTrue(testDone); |
| 892 assertEquals('break! 3', e); |
| 893 } |
| 894 |
| 895 async function testBreakStatementReturnMethodPrimitiveValue(log) { |
| 896 let collection = [1, 2, 3, 4, 5]; |
| 897 let sync_iter = collection[Symbol.iterator](); |
| 898 sync_iter.return = function() { |
| 899 testDone = true; |
| 900 return { value: 'break! primitive!', done: true }; |
| 901 } |
| 902 let sum = 0; |
| 903 let i = 0; |
| 904 testDone = false; |
| 905 for await (var x of async(sync_iter, kNext|kReturnPrimitive, log)) { |
| 906 sum += x; |
| 907 if (++i === 2) break; |
| 908 } |
| 909 return { sum, log }; |
| 910 } |
| 911 log = []; |
| 912 test = testBreakStatementReturnMethodPrimitiveValue(log); |
| 913 assertFalse(testDone); |
| 914 try { |
| 915 await test; |
| 916 assertUnreachable('Promise should be rejected'); |
| 917 } catch (e) { |
| 918 assertEquals(['[Symbol.asyncIterator]()', |
| 919 '.next() -> resolved 1', |
| 920 '.next() -> resolved 2', |
| 921 '.return() -> resolved break! primitive!'], |
| 922 log); |
| 923 assertInstanceof(e, TypeError); |
| 924 assertTrue(testDone); |
| 925 } |
| 926 |
| 927 async function testReturnStatementReturnMethodNotPresent() { |
| 928 let log = []; |
| 929 let collection = [1, 2, 3, 4, 5]; |
| 930 let sum = 0; |
| 931 let i = 0; |
| 932 testDone = false; |
| 933 for await (var x of async(collection, kNext, log)) { |
| 934 sum += x; |
| 935 if (++i === 3) { |
| 936 testDone = true; |
| 937 return { sum, log }; |
| 938 } |
| 939 } |
| 940 } |
| 941 |
| 942 test = testReturnStatementReturnMethodNotPresent(); |
| 943 assertFalse(testDone); |
| 944 assertEquals({sum: 6, log: ['[Symbol.asyncIterator]()', |
| 945 '.next() -> resolved 1', |
| 946 '.next() -> resolved 2', |
| 947 '.next() -> resolved 3']}, |
| 948 await test); |
| 949 assertTrue(testDone); |
| 950 |
| 951 async function testReturnStatementReturnMethodPresent() { |
| 952 let log = []; |
| 953 let collection = [1, 2, 3, 4, 5]; |
| 954 let sum = 0; |
| 955 let i = 0; |
| 956 testDone = false; |
| 957 for await (var x of async(collection, kNext|kReturn, log)) { |
| 958 sum += x; |
| 959 if (++i === 2) { |
| 960 testDone = true; |
| 961 return { sum, log }; |
| 962 } |
| 963 } |
| 964 } |
| 965 |
| 966 test = testReturnStatementReturnMethodPresent(); |
| 967 assertFalse(testDone); |
| 968 assertEquals({sum: 3, log: ['[Symbol.asyncIterator]()', |
| 969 '.next() -> resolved 1', |
| 970 '.next() -> resolved 2', |
| 971 '.return(undefined)']}, |
| 972 await test); |
| 973 assertTrue(testDone); |
| 974 |
| 975 async function testReturnStatementReturnMethodAwaitIterResult() { |
| 976 let log = []; |
| 977 let collection = [1, 2, 3, 4, 5]; |
| 978 let sync_iter = collection[Symbol.iterator](); |
| 979 sync_iter.return = function() { |
| 980 return { |
| 981 value: new Promise(function(resolve, reject) { |
| 982 // TODO(caitp): This does not work with the current implementation of |
| 983 // return statements in AsyncFunctions, which desugar to simply |
| 984 // resolving the internal .promise variable, without waiting for |
| 985 // IteratorClose to do its work. |
| 986 //Promise.resolve().then(function() { |
| 987 testDone = true; |
| 988 resolve('return!'); |
| 989 //}); |
| 990 }), |
| 991 done: true |
| 992 }; |
| 993 }; |
| 994 |
| 995 let sum = 0; |
| 996 let i = 0; |
| 997 testDone = false; |
| 998 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 999 sum += x; |
| 1000 if (++i === 2) return { sum, log }; |
| 1001 } |
| 1002 } |
| 1003 |
| 1004 test = testReturnStatementReturnMethodAwaitIterResult(); |
| 1005 assertFalse(testDone); |
| 1006 assertEquals({sum: 3, |
| 1007 log: ['[Symbol.asyncIterator]()', |
| 1008 '.next() -> resolved 1', |
| 1009 '.next() -> resolved 2', |
| 1010 '.return() -> resolved return!' ]}, |
| 1011 await test); |
| 1012 assertTrue(testDone); |
| 1013 |
| 1014 async function testReturnStatementReturnMethodAwaitRejection(log) { |
| 1015 let collection = [1, 2, 3, 4, 5]; |
| 1016 let sync_iter = collection[Symbol.iterator](); |
| 1017 let sum = 0; |
| 1018 sync_iter.return = function() { |
| 1019 return { |
| 1020 value: new Promise(function(resolve, reject) { |
| 1021 Promise.resolve().then(function() { |
| 1022 testDone = true; |
| 1023 reject('return! ' + sum); |
| 1024 }); |
| 1025 }), |
| 1026 done: true |
| 1027 }; |
| 1028 }; |
| 1029 |
| 1030 let i = 0; |
| 1031 testDone = false; |
| 1032 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 1033 sum += x; |
| 1034 if (++i === 2) return { sum, log }; |
| 1035 } |
| 1036 } |
| 1037 |
| 1038 // TODO(caitp): This does not work with the current implementation of return |
| 1039 // statements in AsyncFunctions, which desugar to simply resolving. This |
| 1040 // prevents the rejection in IteratorClose from taking any effect. |
| 1041 // |
| 1042 // log = []; |
| 1043 // test = testReturnStatementReturnMethodAwaitRejection(log); |
| 1044 // assertFalse(testDone); |
| 1045 // try { |
| 1046 // await test; |
| 1047 // assertUnreachable('Promise should be rejected'); |
| 1048 // } catch (e) { |
| 1049 // assertEquals('return! 3', e); |
| 1050 // assertEquals(['[Symbol.asyncIterator]()', |
| 1051 // '.next() -> resolved 1', |
| 1052 // '.next() -> resolved 2', |
| 1053 // '.return() -> rejected return! 3'], |
| 1054 // log); |
| 1055 // assertTrue(testDone); |
| 1056 // } |
| 1057 |
| 1058 async function testReturnStatementReturnMethodPrimitiveValue(log) { |
| 1059 let collection = [1, 2, 3, 4, 5]; |
| 1060 let sync_iter = collection[Symbol.iterator](); |
| 1061 sync_iter.return = function() { |
| 1062 testDone = true; |
| 1063 return { value: 'return! primitive!', done: true }; |
| 1064 } |
| 1065 let sum = 0; |
| 1066 let i = 0; |
| 1067 testDone = false; |
| 1068 for await (var x of async(sync_iter, kNext|kReturnPrimitive, log)) { |
| 1069 sum += x; |
| 1070 if (++i === 2) break; |
| 1071 } |
| 1072 return { sum, log }; |
| 1073 } |
| 1074 log = []; |
| 1075 test = testReturnStatementReturnMethodPrimitiveValue(log); |
| 1076 assertFalse(testDone); |
| 1077 try { |
| 1078 await test; |
| 1079 assertUnreachable('Promise should be rejected'); |
| 1080 } catch (e) { |
| 1081 assertEquals(['[Symbol.asyncIterator]()', |
| 1082 '.next() -> resolved 1', |
| 1083 '.next() -> resolved 2', |
| 1084 '.return() -> resolved return! primitive!'], |
| 1085 log); |
| 1086 assertInstanceof(e, TypeError); |
| 1087 assertTrue(testDone); |
| 1088 } |
| 1089 |
| 1090 async function testThrowStatementReturnMethodNotPresent() { |
| 1091 let log = []; |
| 1092 let collection = [1, 2, 3, 4, 5]; |
| 1093 let sum = 0; |
| 1094 let i = 0; |
| 1095 testDone = false; |
| 1096 for await (var x of async(collection, kNext|kThrow, log)) { |
| 1097 sum += x; |
| 1098 if (++i === 3) { |
| 1099 testDone = true; |
| 1100 throw { sum, log, toString() { return 'TestError'; } }; |
| 1101 } |
| 1102 } |
| 1103 return { sum, log }; |
| 1104 } |
| 1105 |
| 1106 test = testThrowStatementReturnMethodNotPresent(); |
| 1107 assertFalse(testDone); |
| 1108 try { |
| 1109 await test; |
| 1110 assertUnreachable('Awaited Promise should be rejected'); |
| 1111 } catch (e) { |
| 1112 assertEquals('TestError', e.toString()); |
| 1113 assertEquals(6, e.sum); |
| 1114 assertEquals(['[Symbol.asyncIterator]()', '.next() -> resolved 1', |
| 1115 '.next() -> resolved 2', '.next() -> resolved 3' |
| 1116 ], e.log); |
| 1117 assertTrue(testDone); |
| 1118 } |
| 1119 |
| 1120 async function testThrowStatementReturnMethodPresent() { |
| 1121 let log = []; |
| 1122 let collection = [1, 2, 3, 4, 5]; |
| 1123 let sum = 0; |
| 1124 let i = 0; |
| 1125 testDone = false; |
| 1126 for await (var x of async(collection, kNext|kThrow|kReturn, log)) { |
| 1127 sum += x; |
| 1128 if (++i === 2) { |
| 1129 testDone = true; |
| 1130 throw { sum, log, toString() { return 'TestError2'; } }; |
| 1131 } |
| 1132 } |
| 1133 return { sum, log }; |
| 1134 } |
| 1135 |
| 1136 test = testThrowStatementReturnMethodPresent(); |
| 1137 assertFalse(testDone); |
| 1138 try { |
| 1139 await test; |
| 1140 assertUnreachable('Awaited Promise should be rejected'); |
| 1141 } catch (e) { |
| 1142 assertEquals('TestError2', e.toString()); |
| 1143 assertEquals(3, e.sum); |
| 1144 assertEquals(['[Symbol.asyncIterator]()', '.next() -> resolved 1', |
| 1145 '.next() -> resolved 2', '.return(undefined)' |
| 1146 ], e.log); |
| 1147 assertTrue(testDone); |
| 1148 } |
| 1149 |
| 1150 async function testThrowStatementReturnMethodAwaitIterResult(log) { |
| 1151 let collection = [1, 2, 3, 4, 5]; |
| 1152 let sync_iter = collection[Symbol.iterator](); |
| 1153 sync_iter.return = function() { |
| 1154 return { |
| 1155 value: new Promise(function(resolve, reject) { |
| 1156 Promise.resolve().then(function() { |
| 1157 testDone = true; |
| 1158 resolve('throw!'); |
| 1159 }); |
| 1160 }), |
| 1161 done: true |
| 1162 }; |
| 1163 }; |
| 1164 |
| 1165 let sum = 0; |
| 1166 let i = 0; |
| 1167 testDone = false; |
| 1168 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 1169 sum += x; |
| 1170 if (++i === 2) throw 'Boo!!'; |
| 1171 } |
| 1172 } |
| 1173 |
| 1174 log = []; |
| 1175 test = testThrowStatementReturnMethodAwaitIterResult(log); |
| 1176 assertFalse(testDone); |
| 1177 |
| 1178 try { |
| 1179 await test; |
| 1180 assertUnreachable('Awaited Promise should be rejected'); |
| 1181 } catch (e) { |
| 1182 assertEquals('Boo!!', e); |
| 1183 assertEquals(['[Symbol.asyncIterator]()', |
| 1184 '.next() -> resolved 1', |
| 1185 '.next() -> resolved 2', |
| 1186 '.return() -> resolved throw!' ], log); |
| 1187 assertTrue(testDone); |
| 1188 } |
| 1189 |
| 1190 async function testThrowStatementReturnMethodAwaitRejection(log) { |
| 1191 let collection = [1, 2, 3, 4, 5]; |
| 1192 let sync_iter = collection[Symbol.iterator](); |
| 1193 let sum = 0; |
| 1194 sync_iter.return = function() { |
| 1195 return { |
| 1196 value: new Promise(function(resolve, reject) { |
| 1197 Promise.resolve().then(function() { |
| 1198 testDone = true; |
| 1199 reject('return! ' + sum); |
| 1200 }); |
| 1201 }), |
| 1202 done: true |
| 1203 }; |
| 1204 }; |
| 1205 |
| 1206 let i = 0; |
| 1207 testDone = false; |
| 1208 for await (var x of async(sync_iter, kNext|kReturn, log)) { |
| 1209 sum += x; |
| 1210 if (++i === 2) throw 'Boo!!'; |
| 1211 } |
| 1212 } |
| 1213 |
| 1214 log = []; |
| 1215 test = testThrowStatementReturnMethodAwaitRejection(log); |
| 1216 assertFalse(testDone); |
| 1217 try { |
| 1218 await test; |
| 1219 assertUnreachable('Promise should be rejected'); |
| 1220 } catch (e) { |
| 1221 assertEquals('return! 3', e); |
| 1222 assertEquals(['[Symbol.asyncIterator]()', |
| 1223 '.next() -> resolved 1', |
| 1224 '.next() -> resolved 2', |
| 1225 '.return() -> rejected return! 3'], |
| 1226 log); |
| 1227 assertTrue(testDone); |
| 1228 } |
| 1229 |
| 1230 async function testThrowStatementReturnMethodPrimitiveValue(log) { |
| 1231 let collection = [1, 2, 3, 4, 5]; |
| 1232 let sync_iter = collection[Symbol.iterator](); |
| 1233 sync_iter.return = function() { |
| 1234 testDone = true; |
| 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 assertUnreachable('Promise should be rejected'); |
| 1251 } catch (e) { |
| 1252 assertEquals(['[Symbol.asyncIterator]()', |
| 1253 '.next() -> resolved 1', |
| 1254 '.next() -> resolved 2', |
| 1255 '.return() -> resolved return! primitive!'], |
| 1256 log); |
| 1257 |
| 1258 // AsyncIteratorClose does not require Throw completions to be of type |
| 1259 // Object |
| 1260 assertEquals(e, 'Boo!!'); |
| 1261 assertTrue(testDone); |
| 1262 } |
| 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)
