Yury Selivanov | eb63645 | 2016-09-08 22:01:51 -0700 | [diff] [blame] | 1 | import inspect |
Yury Selivanov | eb63645 | 2016-09-08 22:01:51 -0700 | [diff] [blame] | 2 | import types |
| 3 | import unittest |
| 4 | |
Martin Panter | 94332cb | 2016-10-20 05:10:44 +0000 | [diff] [blame] | 5 | from test.support import import_module |
| 6 | asyncio = import_module("asyncio") |
| 7 | |
Yury Selivanov | eb63645 | 2016-09-08 22:01:51 -0700 | [diff] [blame] | 8 | |
| 9 | class AwaitException(Exception): |
| 10 | pass |
| 11 | |
| 12 | |
| 13 | @types.coroutine |
| 14 | def awaitable(*, throw=False): |
| 15 | if throw: |
| 16 | yield ('throw',) |
| 17 | else: |
| 18 | yield ('result',) |
| 19 | |
| 20 | |
| 21 | def run_until_complete(coro): |
| 22 | exc = False |
| 23 | while True: |
| 24 | try: |
| 25 | if exc: |
| 26 | exc = False |
| 27 | fut = coro.throw(AwaitException) |
| 28 | else: |
| 29 | fut = coro.send(None) |
| 30 | except StopIteration as ex: |
| 31 | return ex.args[0] |
| 32 | |
| 33 | if fut == ('throw',): |
| 34 | exc = True |
| 35 | |
| 36 | |
| 37 | def to_list(gen): |
| 38 | async def iterate(): |
| 39 | res = [] |
| 40 | async for i in gen: |
| 41 | res.append(i) |
| 42 | return res |
| 43 | |
| 44 | return run_until_complete(iterate()) |
| 45 | |
| 46 | |
| 47 | class AsyncGenSyntaxTest(unittest.TestCase): |
| 48 | |
| 49 | def test_async_gen_syntax_01(self): |
| 50 | code = '''async def foo(): |
| 51 | await abc |
| 52 | yield from 123 |
| 53 | ''' |
| 54 | |
| 55 | with self.assertRaisesRegex(SyntaxError, 'yield from.*inside async'): |
| 56 | exec(code, {}, {}) |
| 57 | |
| 58 | def test_async_gen_syntax_02(self): |
| 59 | code = '''async def foo(): |
| 60 | yield from 123 |
| 61 | ''' |
| 62 | |
| 63 | with self.assertRaisesRegex(SyntaxError, 'yield from.*inside async'): |
| 64 | exec(code, {}, {}) |
| 65 | |
| 66 | def test_async_gen_syntax_03(self): |
| 67 | code = '''async def foo(): |
| 68 | await abc |
| 69 | yield |
| 70 | return 123 |
| 71 | ''' |
| 72 | |
| 73 | with self.assertRaisesRegex(SyntaxError, 'return.*value.*async gen'): |
| 74 | exec(code, {}, {}) |
| 75 | |
| 76 | def test_async_gen_syntax_04(self): |
| 77 | code = '''async def foo(): |
| 78 | yield |
| 79 | return 123 |
| 80 | ''' |
| 81 | |
| 82 | with self.assertRaisesRegex(SyntaxError, 'return.*value.*async gen'): |
| 83 | exec(code, {}, {}) |
| 84 | |
| 85 | def test_async_gen_syntax_05(self): |
| 86 | code = '''async def foo(): |
| 87 | if 0: |
| 88 | yield |
| 89 | return 12 |
| 90 | ''' |
| 91 | |
| 92 | with self.assertRaisesRegex(SyntaxError, 'return.*value.*async gen'): |
| 93 | exec(code, {}, {}) |
| 94 | |
| 95 | |
| 96 | class AsyncGenTest(unittest.TestCase): |
| 97 | |
| 98 | def compare_generators(self, sync_gen, async_gen): |
| 99 | def sync_iterate(g): |
| 100 | res = [] |
| 101 | while True: |
| 102 | try: |
| 103 | res.append(g.__next__()) |
| 104 | except StopIteration: |
| 105 | res.append('STOP') |
| 106 | break |
| 107 | except Exception as ex: |
| 108 | res.append(str(type(ex))) |
| 109 | return res |
| 110 | |
| 111 | def async_iterate(g): |
| 112 | res = [] |
| 113 | while True: |
| 114 | try: |
| 115 | g.__anext__().__next__() |
| 116 | except StopAsyncIteration: |
| 117 | res.append('STOP') |
| 118 | break |
| 119 | except StopIteration as ex: |
| 120 | if ex.args: |
| 121 | res.append(ex.args[0]) |
| 122 | else: |
| 123 | res.append('EMPTY StopIteration') |
| 124 | break |
| 125 | except Exception as ex: |
| 126 | res.append(str(type(ex))) |
| 127 | return res |
| 128 | |
| 129 | sync_gen_result = sync_iterate(sync_gen) |
| 130 | async_gen_result = async_iterate(async_gen) |
| 131 | self.assertEqual(sync_gen_result, async_gen_result) |
| 132 | return async_gen_result |
| 133 | |
| 134 | def test_async_gen_iteration_01(self): |
| 135 | async def gen(): |
| 136 | await awaitable() |
| 137 | a = yield 123 |
| 138 | self.assertIs(a, None) |
| 139 | await awaitable() |
| 140 | yield 456 |
| 141 | await awaitable() |
| 142 | yield 789 |
| 143 | |
| 144 | self.assertEqual(to_list(gen()), [123, 456, 789]) |
| 145 | |
| 146 | def test_async_gen_iteration_02(self): |
| 147 | async def gen(): |
| 148 | await awaitable() |
| 149 | yield 123 |
| 150 | await awaitable() |
| 151 | |
| 152 | g = gen() |
| 153 | ai = g.__aiter__() |
| 154 | self.assertEqual(ai.__anext__().__next__(), ('result',)) |
| 155 | |
| 156 | try: |
| 157 | ai.__anext__().__next__() |
| 158 | except StopIteration as ex: |
| 159 | self.assertEqual(ex.args[0], 123) |
| 160 | else: |
| 161 | self.fail('StopIteration was not raised') |
| 162 | |
| 163 | self.assertEqual(ai.__anext__().__next__(), ('result',)) |
| 164 | |
| 165 | try: |
| 166 | ai.__anext__().__next__() |
| 167 | except StopAsyncIteration as ex: |
| 168 | self.assertFalse(ex.args) |
| 169 | else: |
| 170 | self.fail('StopAsyncIteration was not raised') |
| 171 | |
| 172 | def test_async_gen_exception_03(self): |
| 173 | async def gen(): |
| 174 | await awaitable() |
| 175 | yield 123 |
| 176 | await awaitable(throw=True) |
| 177 | yield 456 |
| 178 | |
| 179 | with self.assertRaises(AwaitException): |
| 180 | to_list(gen()) |
| 181 | |
| 182 | def test_async_gen_exception_04(self): |
| 183 | async def gen(): |
| 184 | await awaitable() |
| 185 | yield 123 |
| 186 | 1 / 0 |
| 187 | |
| 188 | g = gen() |
| 189 | ai = g.__aiter__() |
| 190 | self.assertEqual(ai.__anext__().__next__(), ('result',)) |
| 191 | |
| 192 | try: |
| 193 | ai.__anext__().__next__() |
| 194 | except StopIteration as ex: |
| 195 | self.assertEqual(ex.args[0], 123) |
| 196 | else: |
| 197 | self.fail('StopIteration was not raised') |
| 198 | |
| 199 | with self.assertRaises(ZeroDivisionError): |
| 200 | ai.__anext__().__next__() |
| 201 | |
| 202 | def test_async_gen_exception_05(self): |
| 203 | async def gen(): |
| 204 | yield 123 |
| 205 | raise StopAsyncIteration |
| 206 | |
| 207 | with self.assertRaisesRegex(RuntimeError, |
| 208 | 'async generator.*StopAsyncIteration'): |
| 209 | to_list(gen()) |
| 210 | |
| 211 | def test_async_gen_exception_06(self): |
| 212 | async def gen(): |
| 213 | yield 123 |
| 214 | raise StopIteration |
| 215 | |
| 216 | with self.assertRaisesRegex(RuntimeError, |
| 217 | 'async generator.*StopIteration'): |
| 218 | to_list(gen()) |
| 219 | |
| 220 | def test_async_gen_exception_07(self): |
| 221 | def sync_gen(): |
| 222 | try: |
| 223 | yield 1 |
| 224 | 1 / 0 |
| 225 | finally: |
| 226 | yield 2 |
| 227 | yield 3 |
| 228 | |
| 229 | yield 100 |
| 230 | |
| 231 | async def async_gen(): |
| 232 | try: |
| 233 | yield 1 |
| 234 | 1 / 0 |
| 235 | finally: |
| 236 | yield 2 |
| 237 | yield 3 |
| 238 | |
| 239 | yield 100 |
| 240 | |
| 241 | self.compare_generators(sync_gen(), async_gen()) |
| 242 | |
| 243 | def test_async_gen_exception_08(self): |
| 244 | def sync_gen(): |
| 245 | try: |
| 246 | yield 1 |
| 247 | finally: |
| 248 | yield 2 |
| 249 | 1 / 0 |
| 250 | yield 3 |
| 251 | |
| 252 | yield 100 |
| 253 | |
| 254 | async def async_gen(): |
| 255 | try: |
| 256 | yield 1 |
| 257 | await awaitable() |
| 258 | finally: |
| 259 | await awaitable() |
| 260 | yield 2 |
| 261 | 1 / 0 |
| 262 | yield 3 |
| 263 | |
| 264 | yield 100 |
| 265 | |
| 266 | self.compare_generators(sync_gen(), async_gen()) |
| 267 | |
| 268 | def test_async_gen_exception_09(self): |
| 269 | def sync_gen(): |
| 270 | try: |
| 271 | yield 1 |
| 272 | 1 / 0 |
| 273 | finally: |
| 274 | yield 2 |
| 275 | yield 3 |
| 276 | |
| 277 | yield 100 |
| 278 | |
| 279 | async def async_gen(): |
| 280 | try: |
| 281 | await awaitable() |
| 282 | yield 1 |
| 283 | 1 / 0 |
| 284 | finally: |
| 285 | yield 2 |
| 286 | await awaitable() |
| 287 | yield 3 |
| 288 | |
| 289 | yield 100 |
| 290 | |
| 291 | self.compare_generators(sync_gen(), async_gen()) |
| 292 | |
| 293 | def test_async_gen_exception_10(self): |
| 294 | async def gen(): |
| 295 | yield 123 |
| 296 | with self.assertRaisesRegex(TypeError, |
| 297 | "non-None value .* async generator"): |
| 298 | gen().__anext__().send(100) |
| 299 | |
| 300 | def test_async_gen_api_01(self): |
| 301 | async def gen(): |
| 302 | yield 123 |
| 303 | |
| 304 | g = gen() |
| 305 | |
| 306 | self.assertEqual(g.__name__, 'gen') |
| 307 | g.__name__ = '123' |
| 308 | self.assertEqual(g.__name__, '123') |
| 309 | |
| 310 | self.assertIn('.gen', g.__qualname__) |
| 311 | g.__qualname__ = '123' |
| 312 | self.assertEqual(g.__qualname__, '123') |
| 313 | |
| 314 | self.assertIsNone(g.ag_await) |
| 315 | self.assertIsInstance(g.ag_frame, types.FrameType) |
| 316 | self.assertFalse(g.ag_running) |
| 317 | self.assertIsInstance(g.ag_code, types.CodeType) |
| 318 | |
| 319 | self.assertTrue(inspect.isawaitable(g.aclose())) |
| 320 | |
| 321 | |
| 322 | class AsyncGenAsyncioTest(unittest.TestCase): |
| 323 | |
| 324 | def setUp(self): |
| 325 | self.loop = asyncio.new_event_loop() |
| 326 | asyncio.set_event_loop(None) |
| 327 | |
| 328 | def tearDown(self): |
| 329 | self.loop.close() |
| 330 | self.loop = None |
| 331 | |
| 332 | async def to_list(self, gen): |
| 333 | res = [] |
| 334 | async for i in gen: |
| 335 | res.append(i) |
| 336 | return res |
| 337 | |
| 338 | def test_async_gen_asyncio_01(self): |
| 339 | async def gen(): |
| 340 | yield 1 |
| 341 | await asyncio.sleep(0.01, loop=self.loop) |
| 342 | yield 2 |
| 343 | await asyncio.sleep(0.01, loop=self.loop) |
| 344 | return |
| 345 | yield 3 |
| 346 | |
| 347 | res = self.loop.run_until_complete(self.to_list(gen())) |
| 348 | self.assertEqual(res, [1, 2]) |
| 349 | |
| 350 | def test_async_gen_asyncio_02(self): |
| 351 | async def gen(): |
| 352 | yield 1 |
| 353 | await asyncio.sleep(0.01, loop=self.loop) |
| 354 | yield 2 |
| 355 | 1 / 0 |
| 356 | yield 3 |
| 357 | |
| 358 | with self.assertRaises(ZeroDivisionError): |
| 359 | self.loop.run_until_complete(self.to_list(gen())) |
| 360 | |
| 361 | def test_async_gen_asyncio_03(self): |
| 362 | loop = self.loop |
| 363 | |
| 364 | class Gen: |
| 365 | async def __aiter__(self): |
| 366 | yield 1 |
| 367 | await asyncio.sleep(0.01, loop=loop) |
| 368 | yield 2 |
| 369 | |
| 370 | res = loop.run_until_complete(self.to_list(Gen())) |
| 371 | self.assertEqual(res, [1, 2]) |
| 372 | |
| 373 | def test_async_gen_asyncio_anext_04(self): |
| 374 | async def foo(): |
| 375 | yield 1 |
| 376 | await asyncio.sleep(0.01, loop=self.loop) |
| 377 | try: |
| 378 | yield 2 |
| 379 | yield 3 |
| 380 | except ZeroDivisionError: |
| 381 | yield 1000 |
| 382 | await asyncio.sleep(0.01, loop=self.loop) |
| 383 | yield 4 |
| 384 | |
| 385 | async def run1(): |
| 386 | it = foo().__aiter__() |
| 387 | |
| 388 | self.assertEqual(await it.__anext__(), 1) |
| 389 | self.assertEqual(await it.__anext__(), 2) |
| 390 | self.assertEqual(await it.__anext__(), 3) |
| 391 | self.assertEqual(await it.__anext__(), 4) |
| 392 | with self.assertRaises(StopAsyncIteration): |
| 393 | await it.__anext__() |
| 394 | with self.assertRaises(StopAsyncIteration): |
| 395 | await it.__anext__() |
| 396 | |
| 397 | async def run2(): |
| 398 | it = foo().__aiter__() |
| 399 | |
| 400 | self.assertEqual(await it.__anext__(), 1) |
| 401 | self.assertEqual(await it.__anext__(), 2) |
| 402 | try: |
| 403 | it.__anext__().throw(ZeroDivisionError) |
| 404 | except StopIteration as ex: |
| 405 | self.assertEqual(ex.args[0], 1000) |
| 406 | else: |
| 407 | self.fail('StopIteration was not raised') |
| 408 | self.assertEqual(await it.__anext__(), 4) |
| 409 | with self.assertRaises(StopAsyncIteration): |
| 410 | await it.__anext__() |
| 411 | |
| 412 | self.loop.run_until_complete(run1()) |
| 413 | self.loop.run_until_complete(run2()) |
| 414 | |
| 415 | def test_async_gen_asyncio_anext_05(self): |
| 416 | async def foo(): |
| 417 | v = yield 1 |
| 418 | v = yield v |
| 419 | yield v * 100 |
| 420 | |
| 421 | async def run(): |
| 422 | it = foo().__aiter__() |
| 423 | |
| 424 | try: |
| 425 | it.__anext__().send(None) |
| 426 | except StopIteration as ex: |
| 427 | self.assertEqual(ex.args[0], 1) |
| 428 | else: |
| 429 | self.fail('StopIteration was not raised') |
| 430 | |
| 431 | try: |
| 432 | it.__anext__().send(10) |
| 433 | except StopIteration as ex: |
| 434 | self.assertEqual(ex.args[0], 10) |
| 435 | else: |
| 436 | self.fail('StopIteration was not raised') |
| 437 | |
| 438 | try: |
| 439 | it.__anext__().send(12) |
| 440 | except StopIteration as ex: |
| 441 | self.assertEqual(ex.args[0], 1200) |
| 442 | else: |
| 443 | self.fail('StopIteration was not raised') |
| 444 | |
| 445 | with self.assertRaises(StopAsyncIteration): |
| 446 | await it.__anext__() |
| 447 | |
| 448 | self.loop.run_until_complete(run()) |
| 449 | |
Yury Selivanov | 41782e4 | 2016-11-16 18:16:17 -0500 | [diff] [blame] | 450 | def test_async_gen_asyncio_anext_06(self): |
| 451 | DONE = 0 |
| 452 | |
| 453 | # test synchronous generators |
| 454 | def foo(): |
| 455 | try: |
| 456 | yield |
| 457 | except: |
| 458 | pass |
| 459 | g = foo() |
| 460 | g.send(None) |
| 461 | with self.assertRaises(StopIteration): |
| 462 | g.send(None) |
| 463 | |
| 464 | # now with asynchronous generators |
| 465 | |
| 466 | async def gen(): |
| 467 | nonlocal DONE |
| 468 | try: |
| 469 | yield |
| 470 | except: |
| 471 | pass |
| 472 | DONE = 1 |
| 473 | |
| 474 | async def run(): |
| 475 | nonlocal DONE |
| 476 | g = gen() |
| 477 | await g.asend(None) |
| 478 | with self.assertRaises(StopAsyncIteration): |
| 479 | await g.asend(None) |
| 480 | DONE += 10 |
| 481 | |
| 482 | self.loop.run_until_complete(run()) |
| 483 | self.assertEqual(DONE, 11) |
| 484 | |
Serhiy Storchaka | 60e49aa | 2016-11-06 18:47:03 +0200 | [diff] [blame] | 485 | def test_async_gen_asyncio_anext_tuple(self): |
| 486 | async def foo(): |
| 487 | try: |
| 488 | yield (1,) |
| 489 | except ZeroDivisionError: |
| 490 | yield (2,) |
| 491 | |
| 492 | async def run(): |
| 493 | it = foo().__aiter__() |
| 494 | |
| 495 | self.assertEqual(await it.__anext__(), (1,)) |
| 496 | with self.assertRaises(StopIteration) as cm: |
| 497 | it.__anext__().throw(ZeroDivisionError) |
| 498 | self.assertEqual(cm.exception.args[0], (2,)) |
| 499 | with self.assertRaises(StopAsyncIteration): |
| 500 | await it.__anext__() |
| 501 | |
| 502 | self.loop.run_until_complete(run()) |
| 503 | |
| 504 | def test_async_gen_asyncio_anext_stopiteration(self): |
| 505 | async def foo(): |
| 506 | try: |
| 507 | yield StopIteration(1) |
| 508 | except ZeroDivisionError: |
| 509 | yield StopIteration(3) |
| 510 | |
| 511 | async def run(): |
| 512 | it = foo().__aiter__() |
| 513 | |
| 514 | v = await it.__anext__() |
| 515 | self.assertIsInstance(v, StopIteration) |
| 516 | self.assertEqual(v.value, 1) |
| 517 | with self.assertRaises(StopIteration) as cm: |
| 518 | it.__anext__().throw(ZeroDivisionError) |
| 519 | v = cm.exception.args[0] |
| 520 | self.assertIsInstance(v, StopIteration) |
| 521 | self.assertEqual(v.value, 3) |
| 522 | with self.assertRaises(StopAsyncIteration): |
| 523 | await it.__anext__() |
| 524 | |
| 525 | self.loop.run_until_complete(run()) |
| 526 | |
Yury Selivanov | eb63645 | 2016-09-08 22:01:51 -0700 | [diff] [blame] | 527 | def test_async_gen_asyncio_aclose_06(self): |
| 528 | async def foo(): |
| 529 | try: |
| 530 | yield 1 |
| 531 | 1 / 0 |
| 532 | finally: |
| 533 | await asyncio.sleep(0.01, loop=self.loop) |
| 534 | yield 12 |
| 535 | |
| 536 | async def run(): |
| 537 | gen = foo() |
| 538 | it = gen.__aiter__() |
| 539 | await it.__anext__() |
| 540 | await gen.aclose() |
| 541 | |
| 542 | with self.assertRaisesRegex( |
| 543 | RuntimeError, |
| 544 | "async generator ignored GeneratorExit"): |
| 545 | self.loop.run_until_complete(run()) |
| 546 | |
| 547 | def test_async_gen_asyncio_aclose_07(self): |
| 548 | DONE = 0 |
| 549 | |
| 550 | async def foo(): |
| 551 | nonlocal DONE |
| 552 | try: |
| 553 | yield 1 |
| 554 | 1 / 0 |
| 555 | finally: |
| 556 | await asyncio.sleep(0.01, loop=self.loop) |
| 557 | await asyncio.sleep(0.01, loop=self.loop) |
| 558 | DONE += 1 |
| 559 | DONE += 1000 |
| 560 | |
| 561 | async def run(): |
| 562 | gen = foo() |
| 563 | it = gen.__aiter__() |
| 564 | await it.__anext__() |
| 565 | await gen.aclose() |
| 566 | |
| 567 | self.loop.run_until_complete(run()) |
| 568 | self.assertEqual(DONE, 1) |
| 569 | |
| 570 | def test_async_gen_asyncio_aclose_08(self): |
| 571 | DONE = 0 |
| 572 | |
| 573 | fut = asyncio.Future(loop=self.loop) |
| 574 | |
| 575 | async def foo(): |
| 576 | nonlocal DONE |
| 577 | try: |
| 578 | yield 1 |
| 579 | await fut |
| 580 | DONE += 1000 |
| 581 | yield 2 |
| 582 | finally: |
| 583 | await asyncio.sleep(0.01, loop=self.loop) |
| 584 | await asyncio.sleep(0.01, loop=self.loop) |
| 585 | DONE += 1 |
| 586 | DONE += 1000 |
| 587 | |
| 588 | async def run(): |
| 589 | gen = foo() |
| 590 | it = gen.__aiter__() |
| 591 | self.assertEqual(await it.__anext__(), 1) |
| 592 | t = self.loop.create_task(it.__anext__()) |
| 593 | await asyncio.sleep(0.01, loop=self.loop) |
| 594 | await gen.aclose() |
| 595 | return t |
| 596 | |
| 597 | t = self.loop.run_until_complete(run()) |
| 598 | self.assertEqual(DONE, 1) |
| 599 | |
| 600 | # Silence ResourceWarnings |
| 601 | fut.cancel() |
| 602 | t.cancel() |
| 603 | self.loop.run_until_complete(asyncio.sleep(0.01, loop=self.loop)) |
| 604 | |
| 605 | def test_async_gen_asyncio_gc_aclose_09(self): |
| 606 | DONE = 0 |
| 607 | |
| 608 | async def gen(): |
| 609 | nonlocal DONE |
| 610 | try: |
| 611 | while True: |
| 612 | yield 1 |
| 613 | finally: |
| 614 | await asyncio.sleep(0.01, loop=self.loop) |
| 615 | await asyncio.sleep(0.01, loop=self.loop) |
| 616 | DONE = 1 |
| 617 | |
| 618 | async def run(): |
| 619 | g = gen() |
| 620 | await g.__anext__() |
| 621 | await g.__anext__() |
| 622 | del g |
| 623 | |
| 624 | await asyncio.sleep(0.1, loop=self.loop) |
| 625 | |
| 626 | self.loop.run_until_complete(run()) |
| 627 | self.assertEqual(DONE, 1) |
| 628 | |
Yury Selivanov | 41782e4 | 2016-11-16 18:16:17 -0500 | [diff] [blame] | 629 | def test_async_gen_asyncio_aclose_10(self): |
| 630 | DONE = 0 |
| 631 | |
| 632 | # test synchronous generators |
| 633 | def foo(): |
| 634 | try: |
| 635 | yield |
| 636 | except: |
| 637 | pass |
| 638 | g = foo() |
| 639 | g.send(None) |
| 640 | g.close() |
| 641 | |
| 642 | # now with asynchronous generators |
| 643 | |
| 644 | async def gen(): |
| 645 | nonlocal DONE |
| 646 | try: |
| 647 | yield |
| 648 | except: |
| 649 | pass |
| 650 | DONE = 1 |
| 651 | |
| 652 | async def run(): |
| 653 | nonlocal DONE |
| 654 | g = gen() |
| 655 | await g.asend(None) |
| 656 | await g.aclose() |
| 657 | DONE += 10 |
| 658 | |
| 659 | self.loop.run_until_complete(run()) |
| 660 | self.assertEqual(DONE, 11) |
| 661 | |
| 662 | def test_async_gen_asyncio_aclose_11(self): |
| 663 | DONE = 0 |
| 664 | |
| 665 | # test synchronous generators |
| 666 | def foo(): |
| 667 | try: |
| 668 | yield |
| 669 | except: |
| 670 | pass |
| 671 | yield |
| 672 | g = foo() |
| 673 | g.send(None) |
| 674 | with self.assertRaisesRegex(RuntimeError, 'ignored GeneratorExit'): |
| 675 | g.close() |
| 676 | |
| 677 | # now with asynchronous generators |
| 678 | |
| 679 | async def gen(): |
| 680 | nonlocal DONE |
| 681 | try: |
| 682 | yield |
| 683 | except: |
| 684 | pass |
| 685 | yield |
| 686 | DONE += 1 |
| 687 | |
| 688 | async def run(): |
| 689 | nonlocal DONE |
| 690 | g = gen() |
| 691 | await g.asend(None) |
| 692 | with self.assertRaisesRegex(RuntimeError, 'ignored GeneratorExit'): |
| 693 | await g.aclose() |
| 694 | DONE += 10 |
| 695 | |
| 696 | self.loop.run_until_complete(run()) |
| 697 | self.assertEqual(DONE, 10) |
| 698 | |
Yury Selivanov | eb63645 | 2016-09-08 22:01:51 -0700 | [diff] [blame] | 699 | def test_async_gen_asyncio_asend_01(self): |
| 700 | DONE = 0 |
| 701 | |
| 702 | # Sanity check: |
| 703 | def sgen(): |
| 704 | v = yield 1 |
| 705 | yield v * 2 |
| 706 | sg = sgen() |
| 707 | v = sg.send(None) |
| 708 | self.assertEqual(v, 1) |
| 709 | v = sg.send(100) |
| 710 | self.assertEqual(v, 200) |
| 711 | |
| 712 | async def gen(): |
| 713 | nonlocal DONE |
| 714 | try: |
| 715 | await asyncio.sleep(0.01, loop=self.loop) |
| 716 | v = yield 1 |
| 717 | await asyncio.sleep(0.01, loop=self.loop) |
| 718 | yield v * 2 |
| 719 | await asyncio.sleep(0.01, loop=self.loop) |
| 720 | return |
| 721 | finally: |
| 722 | await asyncio.sleep(0.01, loop=self.loop) |
| 723 | await asyncio.sleep(0.01, loop=self.loop) |
| 724 | DONE = 1 |
| 725 | |
| 726 | async def run(): |
| 727 | g = gen() |
| 728 | |
| 729 | v = await g.asend(None) |
| 730 | self.assertEqual(v, 1) |
| 731 | |
| 732 | v = await g.asend(100) |
| 733 | self.assertEqual(v, 200) |
| 734 | |
| 735 | with self.assertRaises(StopAsyncIteration): |
| 736 | await g.asend(None) |
| 737 | |
| 738 | self.loop.run_until_complete(run()) |
| 739 | self.assertEqual(DONE, 1) |
| 740 | |
| 741 | def test_async_gen_asyncio_asend_02(self): |
| 742 | DONE = 0 |
| 743 | |
| 744 | async def sleep_n_crash(delay): |
| 745 | await asyncio.sleep(delay, loop=self.loop) |
| 746 | 1 / 0 |
| 747 | |
| 748 | async def gen(): |
| 749 | nonlocal DONE |
| 750 | try: |
| 751 | await asyncio.sleep(0.01, loop=self.loop) |
| 752 | v = yield 1 |
| 753 | await sleep_n_crash(0.01) |
| 754 | DONE += 1000 |
| 755 | yield v * 2 |
| 756 | finally: |
| 757 | await asyncio.sleep(0.01, loop=self.loop) |
| 758 | await asyncio.sleep(0.01, loop=self.loop) |
| 759 | DONE = 1 |
| 760 | |
| 761 | async def run(): |
| 762 | g = gen() |
| 763 | |
| 764 | v = await g.asend(None) |
| 765 | self.assertEqual(v, 1) |
| 766 | |
| 767 | await g.asend(100) |
| 768 | |
| 769 | with self.assertRaises(ZeroDivisionError): |
| 770 | self.loop.run_until_complete(run()) |
| 771 | self.assertEqual(DONE, 1) |
| 772 | |
| 773 | def test_async_gen_asyncio_asend_03(self): |
| 774 | DONE = 0 |
| 775 | |
| 776 | async def sleep_n_crash(delay): |
| 777 | fut = asyncio.ensure_future(asyncio.sleep(delay, loop=self.loop), |
| 778 | loop=self.loop) |
| 779 | self.loop.call_later(delay / 2, lambda: fut.cancel()) |
| 780 | return await fut |
| 781 | |
| 782 | async def gen(): |
| 783 | nonlocal DONE |
| 784 | try: |
| 785 | await asyncio.sleep(0.01, loop=self.loop) |
| 786 | v = yield 1 |
| 787 | await sleep_n_crash(0.01) |
| 788 | DONE += 1000 |
| 789 | yield v * 2 |
| 790 | finally: |
| 791 | await asyncio.sleep(0.01, loop=self.loop) |
| 792 | await asyncio.sleep(0.01, loop=self.loop) |
| 793 | DONE = 1 |
| 794 | |
| 795 | async def run(): |
| 796 | g = gen() |
| 797 | |
| 798 | v = await g.asend(None) |
| 799 | self.assertEqual(v, 1) |
| 800 | |
| 801 | await g.asend(100) |
| 802 | |
| 803 | with self.assertRaises(asyncio.CancelledError): |
| 804 | self.loop.run_until_complete(run()) |
| 805 | self.assertEqual(DONE, 1) |
| 806 | |
| 807 | def test_async_gen_asyncio_athrow_01(self): |
| 808 | DONE = 0 |
| 809 | |
| 810 | class FooEr(Exception): |
| 811 | pass |
| 812 | |
| 813 | # Sanity check: |
| 814 | def sgen(): |
| 815 | try: |
| 816 | v = yield 1 |
| 817 | except FooEr: |
| 818 | v = 1000 |
| 819 | yield v * 2 |
| 820 | sg = sgen() |
| 821 | v = sg.send(None) |
| 822 | self.assertEqual(v, 1) |
| 823 | v = sg.throw(FooEr) |
| 824 | self.assertEqual(v, 2000) |
| 825 | with self.assertRaises(StopIteration): |
| 826 | sg.send(None) |
| 827 | |
| 828 | async def gen(): |
| 829 | nonlocal DONE |
| 830 | try: |
| 831 | await asyncio.sleep(0.01, loop=self.loop) |
| 832 | try: |
| 833 | v = yield 1 |
| 834 | except FooEr: |
| 835 | v = 1000 |
| 836 | await asyncio.sleep(0.01, loop=self.loop) |
| 837 | yield v * 2 |
| 838 | await asyncio.sleep(0.01, loop=self.loop) |
| 839 | # return |
| 840 | finally: |
| 841 | await asyncio.sleep(0.01, loop=self.loop) |
| 842 | await asyncio.sleep(0.01, loop=self.loop) |
| 843 | DONE = 1 |
| 844 | |
| 845 | async def run(): |
| 846 | g = gen() |
| 847 | |
| 848 | v = await g.asend(None) |
| 849 | self.assertEqual(v, 1) |
| 850 | |
| 851 | v = await g.athrow(FooEr) |
| 852 | self.assertEqual(v, 2000) |
| 853 | |
| 854 | with self.assertRaises(StopAsyncIteration): |
| 855 | await g.asend(None) |
| 856 | |
| 857 | self.loop.run_until_complete(run()) |
| 858 | self.assertEqual(DONE, 1) |
| 859 | |
| 860 | def test_async_gen_asyncio_athrow_02(self): |
| 861 | DONE = 0 |
| 862 | |
| 863 | class FooEr(Exception): |
| 864 | pass |
| 865 | |
| 866 | async def sleep_n_crash(delay): |
| 867 | fut = asyncio.ensure_future(asyncio.sleep(delay, loop=self.loop), |
| 868 | loop=self.loop) |
| 869 | self.loop.call_later(delay / 2, lambda: fut.cancel()) |
| 870 | return await fut |
| 871 | |
| 872 | async def gen(): |
| 873 | nonlocal DONE |
| 874 | try: |
| 875 | await asyncio.sleep(0.01, loop=self.loop) |
| 876 | try: |
| 877 | v = yield 1 |
| 878 | except FooEr: |
| 879 | await sleep_n_crash(0.01) |
| 880 | yield v * 2 |
| 881 | await asyncio.sleep(0.01, loop=self.loop) |
| 882 | # return |
| 883 | finally: |
| 884 | await asyncio.sleep(0.01, loop=self.loop) |
| 885 | await asyncio.sleep(0.01, loop=self.loop) |
| 886 | DONE = 1 |
| 887 | |
| 888 | async def run(): |
| 889 | g = gen() |
| 890 | |
| 891 | v = await g.asend(None) |
| 892 | self.assertEqual(v, 1) |
| 893 | |
| 894 | try: |
| 895 | await g.athrow(FooEr) |
| 896 | except asyncio.CancelledError: |
| 897 | self.assertEqual(DONE, 1) |
| 898 | raise |
| 899 | else: |
| 900 | self.fail('CancelledError was not raised') |
| 901 | |
| 902 | with self.assertRaises(asyncio.CancelledError): |
| 903 | self.loop.run_until_complete(run()) |
| 904 | self.assertEqual(DONE, 1) |
| 905 | |
Yury Selivanov | 41782e4 | 2016-11-16 18:16:17 -0500 | [diff] [blame] | 906 | def test_async_gen_asyncio_athrow_03(self): |
| 907 | DONE = 0 |
| 908 | |
| 909 | # test synchronous generators |
| 910 | def foo(): |
| 911 | try: |
| 912 | yield |
| 913 | except: |
| 914 | pass |
| 915 | g = foo() |
| 916 | g.send(None) |
| 917 | with self.assertRaises(StopIteration): |
| 918 | g.throw(ValueError) |
| 919 | |
| 920 | # now with asynchronous generators |
| 921 | |
| 922 | async def gen(): |
| 923 | nonlocal DONE |
| 924 | try: |
| 925 | yield |
| 926 | except: |
| 927 | pass |
| 928 | DONE = 1 |
| 929 | |
| 930 | async def run(): |
| 931 | nonlocal DONE |
| 932 | g = gen() |
| 933 | await g.asend(None) |
| 934 | with self.assertRaises(StopAsyncIteration): |
| 935 | await g.athrow(ValueError) |
| 936 | DONE += 10 |
| 937 | |
| 938 | self.loop.run_until_complete(run()) |
| 939 | self.assertEqual(DONE, 11) |
| 940 | |
Serhiy Storchaka | 60e49aa | 2016-11-06 18:47:03 +0200 | [diff] [blame] | 941 | def test_async_gen_asyncio_athrow_tuple(self): |
| 942 | async def gen(): |
| 943 | try: |
| 944 | yield 1 |
| 945 | except ZeroDivisionError: |
| 946 | yield (2,) |
| 947 | |
| 948 | async def run(): |
| 949 | g = gen() |
| 950 | v = await g.asend(None) |
| 951 | self.assertEqual(v, 1) |
| 952 | v = await g.athrow(ZeroDivisionError) |
| 953 | self.assertEqual(v, (2,)) |
| 954 | with self.assertRaises(StopAsyncIteration): |
| 955 | await g.asend(None) |
| 956 | |
| 957 | self.loop.run_until_complete(run()) |
| 958 | |
| 959 | def test_async_gen_asyncio_athrow_stopiteration(self): |
| 960 | async def gen(): |
| 961 | try: |
| 962 | yield 1 |
| 963 | except ZeroDivisionError: |
| 964 | yield StopIteration(2) |
| 965 | |
| 966 | async def run(): |
| 967 | g = gen() |
| 968 | v = await g.asend(None) |
| 969 | self.assertEqual(v, 1) |
| 970 | v = await g.athrow(ZeroDivisionError) |
| 971 | self.assertIsInstance(v, StopIteration) |
| 972 | self.assertEqual(v.value, 2) |
| 973 | with self.assertRaises(StopAsyncIteration): |
| 974 | await g.asend(None) |
| 975 | |
| 976 | self.loop.run_until_complete(run()) |
| 977 | |
Yury Selivanov | eb63645 | 2016-09-08 22:01:51 -0700 | [diff] [blame] | 978 | def test_async_gen_asyncio_shutdown_01(self): |
| 979 | finalized = 0 |
| 980 | |
| 981 | async def waiter(timeout): |
| 982 | nonlocal finalized |
| 983 | try: |
| 984 | await asyncio.sleep(timeout, loop=self.loop) |
| 985 | yield 1 |
| 986 | finally: |
| 987 | await asyncio.sleep(0, loop=self.loop) |
| 988 | finalized += 1 |
| 989 | |
| 990 | async def wait(): |
| 991 | async for _ in waiter(1): |
| 992 | pass |
| 993 | |
| 994 | t1 = self.loop.create_task(wait()) |
| 995 | t2 = self.loop.create_task(wait()) |
| 996 | |
| 997 | self.loop.run_until_complete(asyncio.sleep(0.1, loop=self.loop)) |
| 998 | |
| 999 | self.loop.run_until_complete(self.loop.shutdown_asyncgens()) |
| 1000 | self.assertEqual(finalized, 2) |
| 1001 | |
| 1002 | # Silence warnings |
| 1003 | t1.cancel() |
| 1004 | t2.cancel() |
| 1005 | self.loop.run_until_complete(asyncio.sleep(0.1, loop=self.loop)) |
| 1006 | |
| 1007 | def test_async_gen_asyncio_shutdown_02(self): |
| 1008 | logged = 0 |
| 1009 | |
| 1010 | def logger(loop, context): |
| 1011 | nonlocal logged |
| 1012 | self.assertIn('asyncgen', context) |
| 1013 | expected = 'an error occurred during closing of asynchronous' |
| 1014 | if expected in context['message']: |
| 1015 | logged += 1 |
| 1016 | |
| 1017 | async def waiter(timeout): |
| 1018 | try: |
| 1019 | await asyncio.sleep(timeout, loop=self.loop) |
| 1020 | yield 1 |
| 1021 | finally: |
| 1022 | 1 / 0 |
| 1023 | |
| 1024 | async def wait(): |
| 1025 | async for _ in waiter(1): |
| 1026 | pass |
| 1027 | |
| 1028 | t = self.loop.create_task(wait()) |
| 1029 | self.loop.run_until_complete(asyncio.sleep(0.1, loop=self.loop)) |
| 1030 | |
| 1031 | self.loop.set_exception_handler(logger) |
| 1032 | self.loop.run_until_complete(self.loop.shutdown_asyncgens()) |
| 1033 | |
| 1034 | self.assertEqual(logged, 1) |
| 1035 | |
| 1036 | # Silence warnings |
| 1037 | t.cancel() |
| 1038 | self.loop.run_until_complete(asyncio.sleep(0.1, loop=self.loop)) |
| 1039 | |
| 1040 | if __name__ == "__main__": |
| 1041 | unittest.main() |