Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1 | import contextlib |
Serhiy Storchaka | 609a2e1 | 2015-11-12 11:31:51 +0200 | [diff] [blame] | 2 | import copy |
Yury Selivanov | 8085b80 | 2015-05-18 12:50:52 -0400 | [diff] [blame] | 3 | import inspect |
Serhiy Storchaka | 609a2e1 | 2015-11-12 11:31:51 +0200 | [diff] [blame] | 4 | import pickle |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 5 | import sys |
| 6 | import types |
| 7 | import unittest |
| 8 | import warnings |
| 9 | from test import support |
Nathaniel J. Smith | dba976b | 2018-01-26 11:28:31 -0800 | [diff] [blame] | 10 | from test.support.script_helper import assert_python_ok |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 11 | |
| 12 | |
| 13 | class AsyncYieldFrom: |
| 14 | def __init__(self, obj): |
| 15 | self.obj = obj |
| 16 | |
| 17 | def __await__(self): |
| 18 | yield from self.obj |
| 19 | |
| 20 | |
| 21 | class AsyncYield: |
| 22 | def __init__(self, value): |
| 23 | self.value = value |
| 24 | |
| 25 | def __await__(self): |
| 26 | yield self.value |
| 27 | |
| 28 | |
| 29 | def run_async(coro): |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 30 | assert coro.__class__ in {types.GeneratorType, types.CoroutineType} |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 31 | |
| 32 | buffer = [] |
| 33 | result = None |
| 34 | while True: |
| 35 | try: |
| 36 | buffer.append(coro.send(None)) |
| 37 | except StopIteration as ex: |
| 38 | result = ex.args[0] if ex.args else None |
| 39 | break |
| 40 | return buffer, result |
| 41 | |
| 42 | |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 43 | def run_async__await__(coro): |
| 44 | assert coro.__class__ is types.CoroutineType |
| 45 | aw = coro.__await__() |
| 46 | buffer = [] |
| 47 | result = None |
| 48 | i = 0 |
| 49 | while True: |
| 50 | try: |
| 51 | if i % 2: |
| 52 | buffer.append(next(aw)) |
| 53 | else: |
| 54 | buffer.append(aw.send(None)) |
| 55 | i += 1 |
| 56 | except StopIteration as ex: |
| 57 | result = ex.args[0] if ex.args else None |
| 58 | break |
| 59 | return buffer, result |
| 60 | |
| 61 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 62 | @contextlib.contextmanager |
| 63 | def silence_coro_gc(): |
| 64 | with warnings.catch_warnings(): |
| 65 | warnings.simplefilter("ignore") |
| 66 | yield |
| 67 | support.gc_collect() |
| 68 | |
| 69 | |
| 70 | class AsyncBadSyntaxTest(unittest.TestCase): |
| 71 | |
| 72 | def test_badsyntax_1(self): |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 73 | samples = [ |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 74 | """def foo(): |
| 75 | await something() |
| 76 | """, |
| 77 | |
| 78 | """await something()""", |
| 79 | |
| 80 | """async def foo(): |
| 81 | yield from [] |
| 82 | """, |
| 83 | |
| 84 | """async def foo(): |
| 85 | await await fut |
| 86 | """, |
| 87 | |
| 88 | """async def foo(a=await something()): |
| 89 | pass |
| 90 | """, |
| 91 | |
| 92 | """async def foo(a:await something()): |
| 93 | pass |
| 94 | """, |
| 95 | |
| 96 | """async def foo(): |
| 97 | def bar(): |
| 98 | [i async for i in els] |
| 99 | """, |
| 100 | |
| 101 | """async def foo(): |
| 102 | def bar(): |
| 103 | [await i for i in els] |
| 104 | """, |
| 105 | |
| 106 | """async def foo(): |
| 107 | def bar(): |
| 108 | [i for i in els |
| 109 | async for b in els] |
| 110 | """, |
| 111 | |
| 112 | """async def foo(): |
| 113 | def bar(): |
| 114 | [i for i in els |
| 115 | for c in b |
| 116 | async for b in els] |
| 117 | """, |
| 118 | |
| 119 | """async def foo(): |
| 120 | def bar(): |
| 121 | [i for i in els |
| 122 | async for b in els |
| 123 | for c in b] |
| 124 | """, |
| 125 | |
| 126 | """async def foo(): |
| 127 | def bar(): |
| 128 | [i for i in els |
| 129 | for b in await els] |
| 130 | """, |
| 131 | |
| 132 | """async def foo(): |
| 133 | def bar(): |
| 134 | [i for i in els |
| 135 | for b in els |
| 136 | if await b] |
| 137 | """, |
| 138 | |
| 139 | """async def foo(): |
| 140 | def bar(): |
| 141 | [i for i in await els] |
| 142 | """, |
| 143 | |
| 144 | """async def foo(): |
| 145 | def bar(): |
| 146 | [i for i in els if await i] |
| 147 | """, |
| 148 | |
| 149 | """def bar(): |
| 150 | [i async for i in els] |
| 151 | """, |
| 152 | |
| 153 | """def bar(): |
Yury Selivanov | b8ab9d3 | 2017-10-06 02:58:28 -0400 | [diff] [blame] | 154 | {i: i async for i in els} |
| 155 | """, |
| 156 | |
| 157 | """def bar(): |
| 158 | {i async for i in els} |
| 159 | """, |
| 160 | |
| 161 | """def bar(): |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 162 | [await i for i in els] |
| 163 | """, |
| 164 | |
| 165 | """def bar(): |
| 166 | [i for i in els |
| 167 | async for b in els] |
| 168 | """, |
| 169 | |
| 170 | """def bar(): |
| 171 | [i for i in els |
| 172 | for c in b |
| 173 | async for b in els] |
| 174 | """, |
| 175 | |
| 176 | """def bar(): |
| 177 | [i for i in els |
| 178 | async for b in els |
| 179 | for c in b] |
| 180 | """, |
| 181 | |
| 182 | """def bar(): |
| 183 | [i for i in els |
| 184 | for b in await els] |
| 185 | """, |
| 186 | |
| 187 | """def bar(): |
| 188 | [i for i in els |
| 189 | for b in els |
| 190 | if await b] |
| 191 | """, |
| 192 | |
| 193 | """def bar(): |
| 194 | [i for i in await els] |
| 195 | """, |
| 196 | |
| 197 | """def bar(): |
| 198 | [i for i in els if await i] |
| 199 | """, |
| 200 | |
| 201 | """async def foo(): |
| 202 | await |
| 203 | """, |
| 204 | |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 205 | """async def foo(): |
| 206 | def bar(): pass |
| 207 | await = 1 |
| 208 | """, |
| 209 | |
| 210 | """async def foo(): |
| 211 | |
| 212 | def bar(): pass |
| 213 | await = 1 |
| 214 | """, |
| 215 | |
| 216 | """async def foo(): |
| 217 | def bar(): pass |
| 218 | if 1: |
| 219 | await = 1 |
| 220 | """, |
| 221 | |
| 222 | """def foo(): |
| 223 | async def bar(): pass |
| 224 | if 1: |
| 225 | await a |
| 226 | """, |
| 227 | |
| 228 | """def foo(): |
| 229 | async def bar(): pass |
| 230 | await a |
| 231 | """, |
| 232 | |
| 233 | """def foo(): |
| 234 | def baz(): pass |
| 235 | async def bar(): pass |
| 236 | await a |
| 237 | """, |
| 238 | |
| 239 | """def foo(): |
| 240 | def baz(): pass |
| 241 | # 456 |
| 242 | async def bar(): pass |
| 243 | # 123 |
| 244 | await a |
| 245 | """, |
| 246 | |
| 247 | """async def foo(): |
| 248 | def baz(): pass |
| 249 | # 456 |
| 250 | async def bar(): pass |
| 251 | # 123 |
| 252 | await = 2 |
| 253 | """, |
| 254 | |
| 255 | """def foo(): |
| 256 | |
| 257 | def baz(): pass |
| 258 | |
| 259 | async def bar(): pass |
| 260 | |
| 261 | await a |
| 262 | """, |
| 263 | |
| 264 | """async def foo(): |
| 265 | |
| 266 | def baz(): pass |
| 267 | |
| 268 | async def bar(): pass |
| 269 | |
| 270 | await = 2 |
| 271 | """, |
| 272 | |
| 273 | """async def foo(): |
| 274 | def async(): pass |
| 275 | """, |
| 276 | |
| 277 | """async def foo(): |
| 278 | def await(): pass |
| 279 | """, |
| 280 | |
| 281 | """async def foo(): |
| 282 | def bar(): |
| 283 | await |
| 284 | """, |
| 285 | |
| 286 | """async def foo(): |
| 287 | return lambda async: await |
| 288 | """, |
| 289 | |
| 290 | """async def foo(): |
| 291 | return lambda a: await |
| 292 | """, |
| 293 | |
Yury Selivanov | b7666a3 | 2015-07-22 14:48:57 +0300 | [diff] [blame] | 294 | """await a()""", |
| 295 | |
| 296 | """async def foo(a=await b): |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 297 | pass |
| 298 | """, |
| 299 | |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 300 | """async def foo(a:await b): |
| 301 | pass |
| 302 | """, |
| 303 | |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 304 | """def baz(): |
Yury Selivanov | b7666a3 | 2015-07-22 14:48:57 +0300 | [diff] [blame] | 305 | async def foo(a=await b): |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 306 | pass |
| 307 | """, |
| 308 | |
| 309 | """async def foo(async): |
| 310 | pass |
| 311 | """, |
| 312 | |
| 313 | """async def foo(): |
| 314 | def bar(): |
| 315 | def baz(): |
| 316 | async = 1 |
| 317 | """, |
| 318 | |
| 319 | """async def foo(): |
| 320 | def bar(): |
| 321 | def baz(): |
| 322 | pass |
| 323 | async = 1 |
| 324 | """, |
| 325 | |
| 326 | """def foo(): |
| 327 | async def bar(): |
| 328 | |
| 329 | async def baz(): |
| 330 | pass |
| 331 | |
| 332 | def baz(): |
| 333 | 42 |
| 334 | |
| 335 | async = 1 |
| 336 | """, |
| 337 | |
| 338 | """async def foo(): |
| 339 | def bar(): |
| 340 | def baz(): |
| 341 | pass\nawait foo() |
| 342 | """, |
| 343 | |
| 344 | """def foo(): |
| 345 | def bar(): |
| 346 | async def baz(): |
| 347 | pass\nawait foo() |
| 348 | """, |
| 349 | |
| 350 | """async def foo(await): |
| 351 | pass |
| 352 | """, |
| 353 | |
| 354 | """def foo(): |
| 355 | |
| 356 | async def bar(): pass |
| 357 | |
| 358 | await a |
| 359 | """, |
| 360 | |
| 361 | """def foo(): |
| 362 | async def bar(): |
| 363 | pass\nawait a |
Zsolt Dollenstein | e239650 | 2018-04-27 08:58:56 -0700 | [diff] [blame] | 364 | """, |
| 365 | """def foo(): |
| 366 | async for i in arange(2): |
| 367 | pass |
| 368 | """, |
| 369 | """def foo(): |
| 370 | async with resource: |
| 371 | pass |
| 372 | """, |
| 373 | """async with resource: |
| 374 | pass |
| 375 | """, |
| 376 | """async for i in arange(2): |
| 377 | pass |
| 378 | """, |
| 379 | ] |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 380 | |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 381 | for code in samples: |
| 382 | with self.subTest(code=code), self.assertRaises(SyntaxError): |
Yury Selivanov | b7666a3 | 2015-07-22 14:48:57 +0300 | [diff] [blame] | 383 | compile(code, "<test>", "exec") |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 384 | |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 385 | def test_badsyntax_2(self): |
| 386 | samples = [ |
| 387 | """def foo(): |
| 388 | await = 1 |
| 389 | """, |
| 390 | |
| 391 | """class Bar: |
| 392 | def async(): pass |
| 393 | """, |
| 394 | |
| 395 | """class Bar: |
| 396 | async = 1 |
| 397 | """, |
| 398 | |
| 399 | """class async: |
| 400 | pass |
| 401 | """, |
| 402 | |
| 403 | """class await: |
| 404 | pass |
| 405 | """, |
| 406 | |
| 407 | """import math as await""", |
| 408 | |
| 409 | """def async(): |
| 410 | pass""", |
| 411 | |
| 412 | """def foo(*, await=1): |
| 413 | pass""" |
| 414 | |
| 415 | """async = 1""", |
| 416 | |
| 417 | """print(await=1)""" |
| 418 | ] |
| 419 | |
| 420 | for code in samples: |
Jelle Zijlstra | ac31770 | 2017-10-05 20:24:46 -0700 | [diff] [blame] | 421 | with self.subTest(code=code), self.assertRaises(SyntaxError): |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 422 | compile(code, "<test>", "exec") |
| 423 | |
| 424 | def test_badsyntax_3(self): |
Jelle Zijlstra | ac31770 | 2017-10-05 20:24:46 -0700 | [diff] [blame] | 425 | with self.assertRaises(SyntaxError): |
| 426 | compile("async = 1", "<test>", "exec") |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 427 | |
Jelle Zijlstra | ac31770 | 2017-10-05 20:24:46 -0700 | [diff] [blame] | 428 | def test_badsyntax_4(self): |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 429 | samples = [ |
| 430 | '''def foo(await): |
| 431 | async def foo(): pass |
| 432 | async def foo(): |
| 433 | pass |
| 434 | return await + 1 |
| 435 | ''', |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 436 | |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 437 | '''def foo(await): |
| 438 | async def foo(): pass |
| 439 | async def foo(): pass |
| 440 | return await + 1 |
| 441 | ''', |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 442 | |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 443 | '''def foo(await): |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 444 | |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 445 | async def foo(): pass |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 446 | |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 447 | async def foo(): pass |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 448 | |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 449 | return await + 1 |
| 450 | ''', |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 451 | |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 452 | '''def foo(await): |
| 453 | """spam""" |
| 454 | async def foo(): \ |
| 455 | pass |
| 456 | # 123 |
| 457 | async def foo(): pass |
| 458 | # 456 |
| 459 | return await + 1 |
| 460 | ''', |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 461 | |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 462 | '''def foo(await): |
| 463 | def foo(): pass |
| 464 | def foo(): pass |
| 465 | async def bar(): return await_ |
| 466 | await_ = await |
| 467 | try: |
| 468 | bar().send(None) |
| 469 | except StopIteration as ex: |
| 470 | return ex.args[0] + 1 |
| 471 | ''' |
| 472 | ] |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 473 | |
Yury Selivanov | 8987c9d | 2016-09-15 12:50:23 -0400 | [diff] [blame] | 474 | for code in samples: |
Jelle Zijlstra | ac31770 | 2017-10-05 20:24:46 -0700 | [diff] [blame] | 475 | with self.subTest(code=code), self.assertRaises(SyntaxError): |
| 476 | compile(code, "<test>", "exec") |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 477 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 478 | |
Yury Selivanov | 8085b80 | 2015-05-18 12:50:52 -0400 | [diff] [blame] | 479 | class TokenizerRegrTest(unittest.TestCase): |
| 480 | |
| 481 | def test_oneline_defs(self): |
| 482 | buf = [] |
| 483 | for i in range(500): |
| 484 | buf.append('def i{i}(): return {i}'.format(i=i)) |
| 485 | buf = '\n'.join(buf) |
| 486 | |
| 487 | # Test that 500 consequent, one-line defs is OK |
| 488 | ns = {} |
| 489 | exec(buf, ns, ns) |
| 490 | self.assertEqual(ns['i499'](), 499) |
| 491 | |
| 492 | # Test that 500 consequent, one-line defs *and* |
| 493 | # one 'async def' following them is OK |
| 494 | buf += '\nasync def foo():\n return' |
| 495 | ns = {} |
| 496 | exec(buf, ns, ns) |
| 497 | self.assertEqual(ns['i499'](), 499) |
| 498 | self.assertTrue(inspect.iscoroutinefunction(ns['foo'])) |
| 499 | |
| 500 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 501 | class CoroutineTest(unittest.TestCase): |
| 502 | |
| 503 | def test_gen_1(self): |
| 504 | def gen(): yield |
| 505 | self.assertFalse(hasattr(gen, '__await__')) |
| 506 | |
| 507 | def test_func_1(self): |
| 508 | async def foo(): |
| 509 | return 10 |
| 510 | |
| 511 | f = foo() |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 512 | self.assertIsInstance(f, types.CoroutineType) |
| 513 | self.assertTrue(bool(foo.__code__.co_flags & inspect.CO_COROUTINE)) |
| 514 | self.assertFalse(bool(foo.__code__.co_flags & inspect.CO_GENERATOR)) |
| 515 | self.assertTrue(bool(f.cr_code.co_flags & inspect.CO_COROUTINE)) |
| 516 | self.assertFalse(bool(f.cr_code.co_flags & inspect.CO_GENERATOR)) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 517 | self.assertEqual(run_async(f), ([], 10)) |
| 518 | |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 519 | self.assertEqual(run_async__await__(foo()), ([], 10)) |
| 520 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 521 | def bar(): pass |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 522 | self.assertFalse(bool(bar.__code__.co_flags & inspect.CO_COROUTINE)) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 523 | |
| 524 | def test_func_2(self): |
| 525 | async def foo(): |
| 526 | raise StopIteration |
| 527 | |
| 528 | with self.assertRaisesRegex( |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 529 | RuntimeError, "coroutine raised StopIteration"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 530 | |
| 531 | run_async(foo()) |
| 532 | |
| 533 | def test_func_3(self): |
| 534 | async def foo(): |
| 535 | raise StopIteration |
| 536 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 537 | coro = foo() |
| 538 | self.assertRegex(repr(coro), '^<coroutine object.* at 0x.*>$') |
| 539 | coro.close() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 540 | |
| 541 | def test_func_4(self): |
| 542 | async def foo(): |
| 543 | raise StopIteration |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 544 | coro = foo() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 545 | |
| 546 | check = lambda: self.assertRaisesRegex( |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 547 | TypeError, "'coroutine' object is not iterable") |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 548 | |
| 549 | with check(): |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 550 | list(coro) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 551 | |
| 552 | with check(): |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 553 | tuple(coro) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 554 | |
| 555 | with check(): |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 556 | sum(coro) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 557 | |
| 558 | with check(): |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 559 | iter(coro) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 560 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 561 | with check(): |
| 562 | for i in coro: |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 563 | pass |
| 564 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 565 | with check(): |
| 566 | [i for i in coro] |
| 567 | |
| 568 | coro.close() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 569 | |
| 570 | def test_func_5(self): |
| 571 | @types.coroutine |
| 572 | def bar(): |
| 573 | yield 1 |
| 574 | |
| 575 | async def foo(): |
| 576 | await bar() |
| 577 | |
| 578 | check = lambda: self.assertRaisesRegex( |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 579 | TypeError, "'coroutine' object is not iterable") |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 580 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 581 | coro = foo() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 582 | with check(): |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 583 | for el in coro: |
| 584 | pass |
| 585 | coro.close() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 586 | |
| 587 | # the following should pass without an error |
| 588 | for el in bar(): |
| 589 | self.assertEqual(el, 1) |
| 590 | self.assertEqual([el for el in bar()], [1]) |
| 591 | self.assertEqual(tuple(bar()), (1,)) |
| 592 | self.assertEqual(next(iter(bar())), 1) |
| 593 | |
| 594 | def test_func_6(self): |
| 595 | @types.coroutine |
| 596 | def bar(): |
| 597 | yield 1 |
| 598 | yield 2 |
| 599 | |
| 600 | async def foo(): |
| 601 | await bar() |
| 602 | |
| 603 | f = foo() |
Zachary Ware | 37ac590 | 2015-05-13 01:03:06 -0500 | [diff] [blame] | 604 | self.assertEqual(f.send(None), 1) |
| 605 | self.assertEqual(f.send(None), 2) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 606 | with self.assertRaises(StopIteration): |
| 607 | f.send(None) |
| 608 | |
| 609 | def test_func_7(self): |
| 610 | async def bar(): |
| 611 | return 10 |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 612 | coro = bar() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 613 | |
| 614 | def foo(): |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 615 | yield from coro |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 616 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 617 | with self.assertRaisesRegex( |
| 618 | TypeError, |
| 619 | "cannot 'yield from' a coroutine object in " |
| 620 | "a non-coroutine generator"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 621 | list(foo()) |
| 622 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 623 | coro.close() |
| 624 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 625 | def test_func_8(self): |
| 626 | @types.coroutine |
| 627 | def bar(): |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 628 | return (yield from coro) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 629 | |
| 630 | async def foo(): |
| 631 | return 'spam' |
| 632 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 633 | coro = foo() |
| 634 | self.assertEqual(run_async(bar()), ([], 'spam')) |
| 635 | coro.close() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 636 | |
| 637 | def test_func_9(self): |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 638 | async def foo(): |
| 639 | pass |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 640 | |
| 641 | with self.assertWarnsRegex( |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 642 | RuntimeWarning, |
| 643 | r"coroutine '.*test_func_9.*foo' was never awaited"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 644 | |
| 645 | foo() |
| 646 | support.gc_collect() |
| 647 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 648 | with self.assertWarnsRegex( |
| 649 | RuntimeWarning, |
| 650 | r"coroutine '.*test_func_9.*foo' was never awaited"): |
| 651 | |
| 652 | with self.assertRaises(TypeError): |
| 653 | # See bpo-32703. |
| 654 | for _ in foo(): |
| 655 | pass |
| 656 | |
| 657 | support.gc_collect() |
| 658 | |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 659 | def test_func_10(self): |
| 660 | N = 0 |
| 661 | |
| 662 | @types.coroutine |
| 663 | def gen(): |
| 664 | nonlocal N |
| 665 | try: |
| 666 | a = yield |
| 667 | yield (a ** 2) |
| 668 | except ZeroDivisionError: |
| 669 | N += 100 |
| 670 | raise |
| 671 | finally: |
| 672 | N += 1 |
| 673 | |
| 674 | async def foo(): |
| 675 | await gen() |
| 676 | |
| 677 | coro = foo() |
| 678 | aw = coro.__await__() |
| 679 | self.assertIs(aw, iter(aw)) |
| 680 | next(aw) |
| 681 | self.assertEqual(aw.send(10), 100) |
| 682 | |
| 683 | self.assertEqual(N, 0) |
| 684 | aw.close() |
| 685 | self.assertEqual(N, 1) |
| 686 | |
| 687 | coro = foo() |
| 688 | aw = coro.__await__() |
| 689 | next(aw) |
| 690 | with self.assertRaises(ZeroDivisionError): |
| 691 | aw.throw(ZeroDivisionError, None, None) |
| 692 | self.assertEqual(N, 102) |
| 693 | |
| 694 | def test_func_11(self): |
| 695 | async def func(): pass |
| 696 | coro = func() |
| 697 | # Test that PyCoro_Type and _PyCoroWrapper_Type types were properly |
| 698 | # initialized |
| 699 | self.assertIn('__await__', dir(coro)) |
| 700 | self.assertIn('__iter__', dir(coro.__await__())) |
| 701 | self.assertIn('coroutine_wrapper', repr(coro.__await__())) |
| 702 | coro.close() # avoid RuntimeWarning |
| 703 | |
| 704 | def test_func_12(self): |
| 705 | async def g(): |
| 706 | i = me.send(None) |
| 707 | await foo |
| 708 | me = g() |
| 709 | with self.assertRaisesRegex(ValueError, |
| 710 | "coroutine already executing"): |
| 711 | me.send(None) |
| 712 | |
| 713 | def test_func_13(self): |
| 714 | async def g(): |
| 715 | pass |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 716 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 717 | coro = g() |
| 718 | with self.assertRaisesRegex( |
| 719 | TypeError, |
| 720 | "can't send non-None value to a just-started coroutine"): |
| 721 | coro.send('spam') |
| 722 | |
| 723 | coro.close() |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 724 | |
| 725 | def test_func_14(self): |
| 726 | @types.coroutine |
| 727 | def gen(): |
| 728 | yield |
| 729 | async def coro(): |
| 730 | try: |
| 731 | await gen() |
| 732 | except GeneratorExit: |
| 733 | await gen() |
| 734 | c = coro() |
| 735 | c.send(None) |
| 736 | with self.assertRaisesRegex(RuntimeError, |
| 737 | "coroutine ignored GeneratorExit"): |
| 738 | c.close() |
| 739 | |
Yury Selivanov | 77c9681 | 2016-02-13 17:59:05 -0500 | [diff] [blame] | 740 | def test_func_15(self): |
| 741 | # See http://bugs.python.org/issue25887 for details |
| 742 | |
| 743 | async def spammer(): |
| 744 | return 'spam' |
| 745 | async def reader(coro): |
| 746 | return await coro |
| 747 | |
| 748 | spammer_coro = spammer() |
| 749 | |
| 750 | with self.assertRaisesRegex(StopIteration, 'spam'): |
| 751 | reader(spammer_coro).send(None) |
| 752 | |
| 753 | with self.assertRaisesRegex(RuntimeError, |
| 754 | 'cannot reuse already awaited coroutine'): |
| 755 | reader(spammer_coro).send(None) |
| 756 | |
| 757 | def test_func_16(self): |
| 758 | # See http://bugs.python.org/issue25887 for details |
| 759 | |
| 760 | @types.coroutine |
| 761 | def nop(): |
| 762 | yield |
| 763 | async def send(): |
| 764 | await nop() |
| 765 | return 'spam' |
| 766 | async def read(coro): |
| 767 | await nop() |
| 768 | return await coro |
| 769 | |
| 770 | spammer = send() |
| 771 | |
| 772 | reader = read(spammer) |
| 773 | reader.send(None) |
| 774 | reader.send(None) |
| 775 | with self.assertRaisesRegex(Exception, 'ham'): |
| 776 | reader.throw(Exception('ham')) |
| 777 | |
| 778 | reader = read(spammer) |
| 779 | reader.send(None) |
| 780 | with self.assertRaisesRegex(RuntimeError, |
| 781 | 'cannot reuse already awaited coroutine'): |
| 782 | reader.send(None) |
| 783 | |
| 784 | with self.assertRaisesRegex(RuntimeError, |
| 785 | 'cannot reuse already awaited coroutine'): |
| 786 | reader.throw(Exception('wat')) |
| 787 | |
| 788 | def test_func_17(self): |
| 789 | # See http://bugs.python.org/issue25887 for details |
| 790 | |
| 791 | async def coroutine(): |
| 792 | return 'spam' |
| 793 | |
| 794 | coro = coroutine() |
| 795 | with self.assertRaisesRegex(StopIteration, 'spam'): |
| 796 | coro.send(None) |
| 797 | |
| 798 | with self.assertRaisesRegex(RuntimeError, |
| 799 | 'cannot reuse already awaited coroutine'): |
| 800 | coro.send(None) |
| 801 | |
| 802 | with self.assertRaisesRegex(RuntimeError, |
| 803 | 'cannot reuse already awaited coroutine'): |
| 804 | coro.throw(Exception('wat')) |
| 805 | |
| 806 | # Closing a coroutine shouldn't raise any exception even if it's |
| 807 | # already closed/exhausted (similar to generators) |
| 808 | coro.close() |
| 809 | coro.close() |
| 810 | |
| 811 | def test_func_18(self): |
| 812 | # See http://bugs.python.org/issue25887 for details |
| 813 | |
| 814 | async def coroutine(): |
| 815 | return 'spam' |
| 816 | |
| 817 | coro = coroutine() |
| 818 | await_iter = coro.__await__() |
| 819 | it = iter(await_iter) |
| 820 | |
| 821 | with self.assertRaisesRegex(StopIteration, 'spam'): |
| 822 | it.send(None) |
| 823 | |
| 824 | with self.assertRaisesRegex(RuntimeError, |
| 825 | 'cannot reuse already awaited coroutine'): |
| 826 | it.send(None) |
| 827 | |
| 828 | with self.assertRaisesRegex(RuntimeError, |
| 829 | 'cannot reuse already awaited coroutine'): |
| 830 | # Although the iterator protocol requires iterators to |
| 831 | # raise another StopIteration here, we don't want to do |
| 832 | # that. In this particular case, the iterator will raise |
| 833 | # a RuntimeError, so that 'yield from' and 'await' |
| 834 | # expressions will trigger the error, instead of silently |
| 835 | # ignoring the call. |
| 836 | next(it) |
| 837 | |
| 838 | with self.assertRaisesRegex(RuntimeError, |
| 839 | 'cannot reuse already awaited coroutine'): |
| 840 | it.throw(Exception('wat')) |
| 841 | |
| 842 | with self.assertRaisesRegex(RuntimeError, |
| 843 | 'cannot reuse already awaited coroutine'): |
| 844 | it.throw(Exception('wat')) |
| 845 | |
| 846 | # Closing a coroutine shouldn't raise any exception even if it's |
| 847 | # already closed/exhausted (similar to generators) |
| 848 | it.close() |
| 849 | it.close() |
| 850 | |
| 851 | def test_func_19(self): |
| 852 | CHK = 0 |
| 853 | |
| 854 | @types.coroutine |
| 855 | def foo(): |
| 856 | nonlocal CHK |
| 857 | yield |
| 858 | try: |
| 859 | yield |
| 860 | except GeneratorExit: |
| 861 | CHK += 1 |
| 862 | |
| 863 | async def coroutine(): |
| 864 | await foo() |
| 865 | |
| 866 | coro = coroutine() |
| 867 | |
| 868 | coro.send(None) |
| 869 | coro.send(None) |
| 870 | |
| 871 | self.assertEqual(CHK, 0) |
| 872 | coro.close() |
| 873 | self.assertEqual(CHK, 1) |
| 874 | |
| 875 | for _ in range(3): |
| 876 | # Closing a coroutine shouldn't raise any exception even if it's |
| 877 | # already closed/exhausted (similar to generators) |
| 878 | coro.close() |
| 879 | self.assertEqual(CHK, 1) |
| 880 | |
Serhiy Storchaka | 24411f8 | 2016-11-06 18:44:42 +0200 | [diff] [blame] | 881 | def test_coro_wrapper_send_tuple(self): |
| 882 | async def foo(): |
| 883 | return (10,) |
| 884 | |
| 885 | result = run_async__await__(foo()) |
| 886 | self.assertEqual(result, ([], (10,))) |
| 887 | |
| 888 | def test_coro_wrapper_send_stop_iterator(self): |
| 889 | async def foo(): |
| 890 | return StopIteration(10) |
| 891 | |
| 892 | result = run_async__await__(foo()) |
| 893 | self.assertIsInstance(result[1], StopIteration) |
| 894 | self.assertEqual(result[1].value, 10) |
| 895 | |
Yury Selivanov | e13f8f3 | 2015-07-03 00:23:30 -0400 | [diff] [blame] | 896 | def test_cr_await(self): |
| 897 | @types.coroutine |
| 898 | def a(): |
| 899 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_RUNNING) |
| 900 | self.assertIsNone(coro_b.cr_await) |
| 901 | yield |
| 902 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_RUNNING) |
| 903 | self.assertIsNone(coro_b.cr_await) |
| 904 | |
| 905 | async def c(): |
| 906 | await a() |
| 907 | |
| 908 | async def b(): |
| 909 | self.assertIsNone(coro_b.cr_await) |
| 910 | await c() |
| 911 | self.assertIsNone(coro_b.cr_await) |
| 912 | |
| 913 | coro_b = b() |
| 914 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_CREATED) |
| 915 | self.assertIsNone(coro_b.cr_await) |
| 916 | |
| 917 | coro_b.send(None) |
| 918 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_SUSPENDED) |
| 919 | self.assertEqual(coro_b.cr_await.cr_await.gi_code.co_name, 'a') |
| 920 | |
| 921 | with self.assertRaises(StopIteration): |
| 922 | coro_b.send(None) # complete coroutine |
| 923 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_CLOSED) |
| 924 | self.assertIsNone(coro_b.cr_await) |
| 925 | |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 926 | def test_corotype_1(self): |
| 927 | ct = types.CoroutineType |
| 928 | self.assertIn('into coroutine', ct.send.__doc__) |
| 929 | self.assertIn('inside coroutine', ct.close.__doc__) |
| 930 | self.assertIn('in coroutine', ct.throw.__doc__) |
| 931 | self.assertIn('of the coroutine', ct.__dict__['__name__'].__doc__) |
| 932 | self.assertIn('of the coroutine', ct.__dict__['__qualname__'].__doc__) |
| 933 | self.assertEqual(ct.__name__, 'coroutine') |
| 934 | |
| 935 | async def f(): pass |
| 936 | c = f() |
| 937 | self.assertIn('coroutine object', repr(c)) |
| 938 | c.close() |
| 939 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 940 | def test_await_1(self): |
| 941 | |
| 942 | async def foo(): |
| 943 | await 1 |
| 944 | with self.assertRaisesRegex(TypeError, "object int can.t.*await"): |
| 945 | run_async(foo()) |
| 946 | |
| 947 | def test_await_2(self): |
| 948 | async def foo(): |
| 949 | await [] |
| 950 | with self.assertRaisesRegex(TypeError, "object list can.t.*await"): |
| 951 | run_async(foo()) |
| 952 | |
| 953 | def test_await_3(self): |
| 954 | async def foo(): |
| 955 | await AsyncYieldFrom([1, 2, 3]) |
| 956 | |
| 957 | self.assertEqual(run_async(foo()), ([1, 2, 3], None)) |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 958 | self.assertEqual(run_async__await__(foo()), ([1, 2, 3], None)) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 959 | |
| 960 | def test_await_4(self): |
| 961 | async def bar(): |
| 962 | return 42 |
| 963 | |
| 964 | async def foo(): |
| 965 | return await bar() |
| 966 | |
| 967 | self.assertEqual(run_async(foo()), ([], 42)) |
| 968 | |
| 969 | def test_await_5(self): |
| 970 | class Awaitable: |
| 971 | def __await__(self): |
| 972 | return |
| 973 | |
| 974 | async def foo(): |
| 975 | return (await Awaitable()) |
| 976 | |
| 977 | with self.assertRaisesRegex( |
| 978 | TypeError, "__await__.*returned non-iterator of type"): |
| 979 | |
| 980 | run_async(foo()) |
| 981 | |
| 982 | def test_await_6(self): |
| 983 | class Awaitable: |
| 984 | def __await__(self): |
| 985 | return iter([52]) |
| 986 | |
| 987 | async def foo(): |
| 988 | return (await Awaitable()) |
| 989 | |
| 990 | self.assertEqual(run_async(foo()), ([52], None)) |
| 991 | |
| 992 | def test_await_7(self): |
| 993 | class Awaitable: |
| 994 | def __await__(self): |
| 995 | yield 42 |
| 996 | return 100 |
| 997 | |
| 998 | async def foo(): |
| 999 | return (await Awaitable()) |
| 1000 | |
| 1001 | self.assertEqual(run_async(foo()), ([42], 100)) |
| 1002 | |
| 1003 | def test_await_8(self): |
| 1004 | class Awaitable: |
| 1005 | pass |
| 1006 | |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 1007 | async def foo(): return await Awaitable() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1008 | |
| 1009 | with self.assertRaisesRegex( |
| 1010 | TypeError, "object Awaitable can't be used in 'await' expression"): |
| 1011 | |
| 1012 | run_async(foo()) |
| 1013 | |
| 1014 | def test_await_9(self): |
| 1015 | def wrap(): |
| 1016 | return bar |
| 1017 | |
| 1018 | async def bar(): |
| 1019 | return 42 |
| 1020 | |
| 1021 | async def foo(): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1022 | db = {'b': lambda: wrap} |
| 1023 | |
| 1024 | class DB: |
| 1025 | b = wrap |
| 1026 | |
| 1027 | return (await bar() + await wrap()() + await db['b']()()() + |
| 1028 | await bar() * 1000 + await DB.b()()) |
| 1029 | |
| 1030 | async def foo2(): |
| 1031 | return -await bar() |
| 1032 | |
| 1033 | self.assertEqual(run_async(foo()), ([], 42168)) |
| 1034 | self.assertEqual(run_async(foo2()), ([], -42)) |
| 1035 | |
| 1036 | def test_await_10(self): |
| 1037 | async def baz(): |
| 1038 | return 42 |
| 1039 | |
| 1040 | async def bar(): |
| 1041 | return baz() |
| 1042 | |
| 1043 | async def foo(): |
| 1044 | return await (await bar()) |
| 1045 | |
| 1046 | self.assertEqual(run_async(foo()), ([], 42)) |
| 1047 | |
| 1048 | def test_await_11(self): |
| 1049 | def ident(val): |
| 1050 | return val |
| 1051 | |
| 1052 | async def bar(): |
| 1053 | return 'spam' |
| 1054 | |
| 1055 | async def foo(): |
| 1056 | return ident(val=await bar()) |
| 1057 | |
| 1058 | async def foo2(): |
| 1059 | return await bar(), 'ham' |
| 1060 | |
| 1061 | self.assertEqual(run_async(foo2()), ([], ('spam', 'ham'))) |
| 1062 | |
| 1063 | def test_await_12(self): |
| 1064 | async def coro(): |
| 1065 | return 'spam' |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 1066 | c = coro() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1067 | |
| 1068 | class Awaitable: |
| 1069 | def __await__(self): |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 1070 | return c |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1071 | |
| 1072 | async def foo(): |
| 1073 | return await Awaitable() |
| 1074 | |
| 1075 | with self.assertRaisesRegex( |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 1076 | TypeError, r"__await__\(\) returned a coroutine"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1077 | run_async(foo()) |
| 1078 | |
Yury Selivanov | 2a2270d | 2018-01-29 14:31:47 -0500 | [diff] [blame] | 1079 | c.close() |
| 1080 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1081 | def test_await_13(self): |
| 1082 | class Awaitable: |
| 1083 | def __await__(self): |
| 1084 | return self |
| 1085 | |
| 1086 | async def foo(): |
| 1087 | return await Awaitable() |
| 1088 | |
| 1089 | with self.assertRaisesRegex( |
| 1090 | TypeError, "__await__.*returned non-iterator of type"): |
| 1091 | |
| 1092 | run_async(foo()) |
| 1093 | |
Yury Selivanov | f270152 | 2015-07-01 12:29:55 -0400 | [diff] [blame] | 1094 | def test_await_14(self): |
| 1095 | class Wrapper: |
| 1096 | # Forces the interpreter to use CoroutineType.__await__ |
| 1097 | def __init__(self, coro): |
| 1098 | assert coro.__class__ is types.CoroutineType |
| 1099 | self.coro = coro |
| 1100 | def __await__(self): |
| 1101 | return self.coro.__await__() |
| 1102 | |
| 1103 | class FutureLike: |
| 1104 | def __await__(self): |
| 1105 | return (yield) |
| 1106 | |
| 1107 | class Marker(Exception): |
| 1108 | pass |
| 1109 | |
| 1110 | async def coro1(): |
| 1111 | try: |
| 1112 | return await FutureLike() |
| 1113 | except ZeroDivisionError: |
| 1114 | raise Marker |
| 1115 | async def coro2(): |
| 1116 | return await Wrapper(coro1()) |
| 1117 | |
| 1118 | c = coro2() |
| 1119 | c.send(None) |
| 1120 | with self.assertRaisesRegex(StopIteration, 'spam'): |
| 1121 | c.send('spam') |
| 1122 | |
| 1123 | c = coro2() |
| 1124 | c.send(None) |
| 1125 | with self.assertRaises(Marker): |
| 1126 | c.throw(ZeroDivisionError) |
| 1127 | |
Yury Selivanov | c724bae | 2016-03-02 11:30:46 -0500 | [diff] [blame] | 1128 | def test_await_15(self): |
| 1129 | @types.coroutine |
| 1130 | def nop(): |
| 1131 | yield |
| 1132 | |
| 1133 | async def coroutine(): |
| 1134 | await nop() |
| 1135 | |
| 1136 | async def waiter(coro): |
| 1137 | await coro |
| 1138 | |
| 1139 | coro = coroutine() |
| 1140 | coro.send(None) |
| 1141 | |
| 1142 | with self.assertRaisesRegex(RuntimeError, |
| 1143 | "coroutine is being awaited already"): |
| 1144 | waiter(coro).send(None) |
| 1145 | |
Yury Selivanov | b7c9150 | 2017-03-12 15:53:07 -0400 | [diff] [blame] | 1146 | def test_await_16(self): |
| 1147 | # See https://bugs.python.org/issue29600 for details. |
| 1148 | |
| 1149 | async def f(): |
| 1150 | return ValueError() |
| 1151 | |
| 1152 | async def g(): |
| 1153 | try: |
| 1154 | raise KeyError |
| 1155 | except: |
| 1156 | return await f() |
| 1157 | |
| 1158 | _, result = run_async(g()) |
| 1159 | self.assertIsNone(result.__context__) |
| 1160 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1161 | def test_with_1(self): |
| 1162 | class Manager: |
| 1163 | def __init__(self, name): |
| 1164 | self.name = name |
| 1165 | |
| 1166 | async def __aenter__(self): |
| 1167 | await AsyncYieldFrom(['enter-1-' + self.name, |
| 1168 | 'enter-2-' + self.name]) |
| 1169 | return self |
| 1170 | |
| 1171 | async def __aexit__(self, *args): |
| 1172 | await AsyncYieldFrom(['exit-1-' + self.name, |
| 1173 | 'exit-2-' + self.name]) |
| 1174 | |
| 1175 | if self.name == 'B': |
| 1176 | return True |
| 1177 | |
| 1178 | |
| 1179 | async def foo(): |
| 1180 | async with Manager("A") as a, Manager("B") as b: |
| 1181 | await AsyncYieldFrom([('managers', a.name, b.name)]) |
| 1182 | 1/0 |
| 1183 | |
| 1184 | f = foo() |
| 1185 | result, _ = run_async(f) |
| 1186 | |
| 1187 | self.assertEqual( |
| 1188 | result, ['enter-1-A', 'enter-2-A', 'enter-1-B', 'enter-2-B', |
| 1189 | ('managers', 'A', 'B'), |
| 1190 | 'exit-1-B', 'exit-2-B', 'exit-1-A', 'exit-2-A'] |
| 1191 | ) |
| 1192 | |
| 1193 | async def foo(): |
| 1194 | async with Manager("A") as a, Manager("C") as c: |
| 1195 | await AsyncYieldFrom([('managers', a.name, c.name)]) |
| 1196 | 1/0 |
| 1197 | |
| 1198 | with self.assertRaises(ZeroDivisionError): |
| 1199 | run_async(foo()) |
| 1200 | |
| 1201 | def test_with_2(self): |
| 1202 | class CM: |
| 1203 | def __aenter__(self): |
| 1204 | pass |
| 1205 | |
| 1206 | async def foo(): |
| 1207 | async with CM(): |
| 1208 | pass |
| 1209 | |
| 1210 | with self.assertRaisesRegex(AttributeError, '__aexit__'): |
| 1211 | run_async(foo()) |
| 1212 | |
| 1213 | def test_with_3(self): |
| 1214 | class CM: |
| 1215 | def __aexit__(self): |
| 1216 | pass |
| 1217 | |
| 1218 | async def foo(): |
| 1219 | async with CM(): |
| 1220 | pass |
| 1221 | |
| 1222 | with self.assertRaisesRegex(AttributeError, '__aenter__'): |
| 1223 | run_async(foo()) |
| 1224 | |
| 1225 | def test_with_4(self): |
| 1226 | class CM: |
| 1227 | def __enter__(self): |
| 1228 | pass |
| 1229 | |
| 1230 | def __exit__(self): |
| 1231 | pass |
| 1232 | |
| 1233 | async def foo(): |
| 1234 | async with CM(): |
| 1235 | pass |
| 1236 | |
| 1237 | with self.assertRaisesRegex(AttributeError, '__aexit__'): |
| 1238 | run_async(foo()) |
| 1239 | |
| 1240 | def test_with_5(self): |
| 1241 | # While this test doesn't make a lot of sense, |
| 1242 | # it's a regression test for an early bug with opcodes |
| 1243 | # generation |
| 1244 | |
| 1245 | class CM: |
| 1246 | async def __aenter__(self): |
| 1247 | return self |
| 1248 | |
| 1249 | async def __aexit__(self, *exc): |
| 1250 | pass |
| 1251 | |
| 1252 | async def func(): |
| 1253 | async with CM(): |
| 1254 | assert (1, ) == 1 |
| 1255 | |
| 1256 | with self.assertRaises(AssertionError): |
| 1257 | run_async(func()) |
| 1258 | |
| 1259 | def test_with_6(self): |
| 1260 | class CM: |
| 1261 | def __aenter__(self): |
| 1262 | return 123 |
| 1263 | |
| 1264 | def __aexit__(self, *e): |
| 1265 | return 456 |
| 1266 | |
| 1267 | async def foo(): |
| 1268 | async with CM(): |
| 1269 | pass |
| 1270 | |
| 1271 | with self.assertRaisesRegex( |
Serhiy Storchaka | a68f2f0 | 2018-04-03 01:41:38 +0300 | [diff] [blame] | 1272 | TypeError, |
| 1273 | "'async with' received an object from __aenter__ " |
| 1274 | "that does not implement __await__: int"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1275 | # it's important that __aexit__ wasn't called |
| 1276 | run_async(foo()) |
| 1277 | |
| 1278 | def test_with_7(self): |
| 1279 | class CM: |
| 1280 | async def __aenter__(self): |
| 1281 | return self |
| 1282 | |
| 1283 | def __aexit__(self, *e): |
Nick Coghlan | baaadbf | 2015-05-13 15:54:02 +1000 | [diff] [blame] | 1284 | return 444 |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1285 | |
Serhiy Storchaka | 2eeac26 | 2018-04-04 18:45:10 +0300 | [diff] [blame] | 1286 | # Exit with exception |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1287 | async def foo(): |
| 1288 | async with CM(): |
Nick Coghlan | baaadbf | 2015-05-13 15:54:02 +1000 | [diff] [blame] | 1289 | 1/0 |
| 1290 | |
| 1291 | try: |
| 1292 | run_async(foo()) |
| 1293 | except TypeError as exc: |
| 1294 | self.assertRegex( |
Serhiy Storchaka | a68f2f0 | 2018-04-03 01:41:38 +0300 | [diff] [blame] | 1295 | exc.args[0], |
| 1296 | "'async with' received an object from __aexit__ " |
| 1297 | "that does not implement __await__: int") |
Nick Coghlan | baaadbf | 2015-05-13 15:54:02 +1000 | [diff] [blame] | 1298 | self.assertTrue(exc.__context__ is not None) |
| 1299 | self.assertTrue(isinstance(exc.__context__, ZeroDivisionError)) |
| 1300 | else: |
| 1301 | self.fail('invalid asynchronous context manager did not fail') |
| 1302 | |
| 1303 | |
| 1304 | def test_with_8(self): |
| 1305 | CNT = 0 |
| 1306 | |
| 1307 | class CM: |
| 1308 | async def __aenter__(self): |
| 1309 | return self |
| 1310 | |
| 1311 | def __aexit__(self, *e): |
| 1312 | return 456 |
| 1313 | |
Serhiy Storchaka | 2eeac26 | 2018-04-04 18:45:10 +0300 | [diff] [blame] | 1314 | # Normal exit |
Nick Coghlan | baaadbf | 2015-05-13 15:54:02 +1000 | [diff] [blame] | 1315 | async def foo(): |
| 1316 | nonlocal CNT |
| 1317 | async with CM(): |
| 1318 | CNT += 1 |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1319 | with self.assertRaisesRegex( |
Serhiy Storchaka | a68f2f0 | 2018-04-03 01:41:38 +0300 | [diff] [blame] | 1320 | TypeError, |
| 1321 | "'async with' received an object from __aexit__ " |
| 1322 | "that does not implement __await__: int"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1323 | run_async(foo()) |
Nick Coghlan | baaadbf | 2015-05-13 15:54:02 +1000 | [diff] [blame] | 1324 | self.assertEqual(CNT, 1) |
| 1325 | |
Serhiy Storchaka | 2eeac26 | 2018-04-04 18:45:10 +0300 | [diff] [blame] | 1326 | # Exit with 'break' |
| 1327 | async def foo(): |
| 1328 | nonlocal CNT |
| 1329 | for i in range(2): |
| 1330 | async with CM(): |
| 1331 | CNT += 1 |
| 1332 | break |
| 1333 | with self.assertRaisesRegex( |
| 1334 | TypeError, |
| 1335 | "'async with' received an object from __aexit__ " |
| 1336 | "that does not implement __await__: int"): |
| 1337 | run_async(foo()) |
| 1338 | self.assertEqual(CNT, 2) |
| 1339 | |
| 1340 | # Exit with 'continue' |
| 1341 | async def foo(): |
| 1342 | nonlocal CNT |
| 1343 | for i in range(2): |
| 1344 | async with CM(): |
| 1345 | CNT += 1 |
| 1346 | continue |
| 1347 | with self.assertRaisesRegex( |
| 1348 | TypeError, |
| 1349 | "'async with' received an object from __aexit__ " |
| 1350 | "that does not implement __await__: int"): |
| 1351 | run_async(foo()) |
| 1352 | self.assertEqual(CNT, 3) |
| 1353 | |
| 1354 | # Exit with 'return' |
| 1355 | async def foo(): |
| 1356 | nonlocal CNT |
| 1357 | async with CM(): |
| 1358 | CNT += 1 |
| 1359 | return |
| 1360 | with self.assertRaisesRegex( |
| 1361 | TypeError, |
| 1362 | "'async with' received an object from __aexit__ " |
| 1363 | "that does not implement __await__: int"): |
| 1364 | run_async(foo()) |
| 1365 | self.assertEqual(CNT, 4) |
| 1366 | |
Nick Coghlan | baaadbf | 2015-05-13 15:54:02 +1000 | [diff] [blame] | 1367 | |
| 1368 | def test_with_9(self): |
| 1369 | CNT = 0 |
| 1370 | |
| 1371 | class CM: |
| 1372 | async def __aenter__(self): |
| 1373 | return self |
| 1374 | |
| 1375 | async def __aexit__(self, *e): |
| 1376 | 1/0 |
| 1377 | |
| 1378 | async def foo(): |
| 1379 | nonlocal CNT |
| 1380 | async with CM(): |
| 1381 | CNT += 1 |
| 1382 | |
| 1383 | with self.assertRaises(ZeroDivisionError): |
| 1384 | run_async(foo()) |
| 1385 | |
| 1386 | self.assertEqual(CNT, 1) |
| 1387 | |
| 1388 | def test_with_10(self): |
| 1389 | CNT = 0 |
| 1390 | |
| 1391 | class CM: |
| 1392 | async def __aenter__(self): |
| 1393 | return self |
| 1394 | |
| 1395 | async def __aexit__(self, *e): |
| 1396 | 1/0 |
| 1397 | |
| 1398 | async def foo(): |
| 1399 | nonlocal CNT |
| 1400 | async with CM(): |
| 1401 | async with CM(): |
| 1402 | raise RuntimeError |
| 1403 | |
| 1404 | try: |
| 1405 | run_async(foo()) |
| 1406 | except ZeroDivisionError as exc: |
| 1407 | self.assertTrue(exc.__context__ is not None) |
| 1408 | self.assertTrue(isinstance(exc.__context__, ZeroDivisionError)) |
| 1409 | self.assertTrue(isinstance(exc.__context__.__context__, |
| 1410 | RuntimeError)) |
| 1411 | else: |
| 1412 | self.fail('exception from __aexit__ did not propagate') |
| 1413 | |
| 1414 | def test_with_11(self): |
| 1415 | CNT = 0 |
| 1416 | |
| 1417 | class CM: |
| 1418 | async def __aenter__(self): |
| 1419 | raise NotImplementedError |
| 1420 | |
| 1421 | async def __aexit__(self, *e): |
| 1422 | 1/0 |
| 1423 | |
| 1424 | async def foo(): |
| 1425 | nonlocal CNT |
| 1426 | async with CM(): |
| 1427 | raise RuntimeError |
| 1428 | |
| 1429 | try: |
| 1430 | run_async(foo()) |
| 1431 | except NotImplementedError as exc: |
| 1432 | self.assertTrue(exc.__context__ is None) |
| 1433 | else: |
| 1434 | self.fail('exception from __aenter__ did not propagate') |
| 1435 | |
| 1436 | def test_with_12(self): |
| 1437 | CNT = 0 |
| 1438 | |
| 1439 | class CM: |
| 1440 | async def __aenter__(self): |
| 1441 | return self |
| 1442 | |
| 1443 | async def __aexit__(self, *e): |
| 1444 | return True |
| 1445 | |
| 1446 | async def foo(): |
| 1447 | nonlocal CNT |
| 1448 | async with CM() as cm: |
| 1449 | self.assertIs(cm.__class__, CM) |
| 1450 | raise RuntimeError |
| 1451 | |
| 1452 | run_async(foo()) |
| 1453 | |
Yury Selivanov | 9113dc7 | 2015-05-13 16:49:35 -0400 | [diff] [blame] | 1454 | def test_with_13(self): |
| 1455 | CNT = 0 |
| 1456 | |
| 1457 | class CM: |
| 1458 | async def __aenter__(self): |
| 1459 | 1/0 |
| 1460 | |
| 1461 | async def __aexit__(self, *e): |
| 1462 | return True |
| 1463 | |
| 1464 | async def foo(): |
| 1465 | nonlocal CNT |
| 1466 | CNT += 1 |
| 1467 | async with CM(): |
| 1468 | CNT += 1000 |
| 1469 | CNT += 10000 |
| 1470 | |
| 1471 | with self.assertRaises(ZeroDivisionError): |
| 1472 | run_async(foo()) |
| 1473 | self.assertEqual(CNT, 1) |
| 1474 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1475 | def test_for_1(self): |
| 1476 | aiter_calls = 0 |
| 1477 | |
| 1478 | class AsyncIter: |
| 1479 | def __init__(self): |
| 1480 | self.i = 0 |
| 1481 | |
Yury Selivanov | faa135a | 2017-10-06 02:08:57 -0400 | [diff] [blame] | 1482 | def __aiter__(self): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1483 | nonlocal aiter_calls |
| 1484 | aiter_calls += 1 |
| 1485 | return self |
| 1486 | |
| 1487 | async def __anext__(self): |
| 1488 | self.i += 1 |
| 1489 | |
| 1490 | if not (self.i % 10): |
| 1491 | await AsyncYield(self.i * 10) |
| 1492 | |
| 1493 | if self.i > 100: |
| 1494 | raise StopAsyncIteration |
| 1495 | |
| 1496 | return self.i, self.i |
| 1497 | |
| 1498 | |
| 1499 | buffer = [] |
| 1500 | async def test1(): |
Yury Selivanov | faa135a | 2017-10-06 02:08:57 -0400 | [diff] [blame] | 1501 | async for i1, i2 in AsyncIter(): |
| 1502 | buffer.append(i1 + i2) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1503 | |
| 1504 | yielded, _ = run_async(test1()) |
| 1505 | # Make sure that __aiter__ was called only once |
| 1506 | self.assertEqual(aiter_calls, 1) |
| 1507 | self.assertEqual(yielded, [i * 100 for i in range(1, 11)]) |
| 1508 | self.assertEqual(buffer, [i*2 for i in range(1, 101)]) |
| 1509 | |
| 1510 | |
| 1511 | buffer = [] |
| 1512 | async def test2(): |
| 1513 | nonlocal buffer |
Yury Selivanov | faa135a | 2017-10-06 02:08:57 -0400 | [diff] [blame] | 1514 | async for i in AsyncIter(): |
| 1515 | buffer.append(i[0]) |
| 1516 | if i[0] == 20: |
| 1517 | break |
| 1518 | else: |
| 1519 | buffer.append('what?') |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1520 | buffer.append('end') |
| 1521 | |
| 1522 | yielded, _ = run_async(test2()) |
| 1523 | # Make sure that __aiter__ was called only once |
| 1524 | self.assertEqual(aiter_calls, 2) |
| 1525 | self.assertEqual(yielded, [100, 200]) |
| 1526 | self.assertEqual(buffer, [i for i in range(1, 21)] + ['end']) |
| 1527 | |
| 1528 | |
| 1529 | buffer = [] |
| 1530 | async def test3(): |
| 1531 | nonlocal buffer |
Yury Selivanov | faa135a | 2017-10-06 02:08:57 -0400 | [diff] [blame] | 1532 | async for i in AsyncIter(): |
| 1533 | if i[0] > 20: |
| 1534 | continue |
| 1535 | buffer.append(i[0]) |
| 1536 | else: |
| 1537 | buffer.append('what?') |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1538 | buffer.append('end') |
| 1539 | |
| 1540 | yielded, _ = run_async(test3()) |
| 1541 | # Make sure that __aiter__ was called only once |
| 1542 | self.assertEqual(aiter_calls, 3) |
| 1543 | self.assertEqual(yielded, [i * 100 for i in range(1, 11)]) |
| 1544 | self.assertEqual(buffer, [i for i in range(1, 21)] + |
| 1545 | ['what?', 'end']) |
| 1546 | |
| 1547 | def test_for_2(self): |
| 1548 | tup = (1, 2, 3) |
| 1549 | refs_before = sys.getrefcount(tup) |
| 1550 | |
| 1551 | async def foo(): |
| 1552 | async for i in tup: |
| 1553 | print('never going to happen') |
| 1554 | |
| 1555 | with self.assertRaisesRegex( |
| 1556 | TypeError, "async for' requires an object.*__aiter__.*tuple"): |
| 1557 | |
| 1558 | run_async(foo()) |
| 1559 | |
| 1560 | self.assertEqual(sys.getrefcount(tup), refs_before) |
| 1561 | |
| 1562 | def test_for_3(self): |
| 1563 | class I: |
| 1564 | def __aiter__(self): |
| 1565 | return self |
| 1566 | |
| 1567 | aiter = I() |
| 1568 | refs_before = sys.getrefcount(aiter) |
| 1569 | |
| 1570 | async def foo(): |
| 1571 | async for i in aiter: |
| 1572 | print('never going to happen') |
| 1573 | |
| 1574 | with self.assertRaisesRegex( |
| 1575 | TypeError, |
Yury Selivanov | faa135a | 2017-10-06 02:08:57 -0400 | [diff] [blame] | 1576 | r"that does not implement __anext__"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1577 | |
| 1578 | run_async(foo()) |
| 1579 | |
| 1580 | self.assertEqual(sys.getrefcount(aiter), refs_before) |
| 1581 | |
| 1582 | def test_for_4(self): |
| 1583 | class I: |
Yury Selivanov | a6f6edb | 2016-06-09 15:08:31 -0400 | [diff] [blame] | 1584 | def __aiter__(self): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1585 | return self |
| 1586 | |
| 1587 | def __anext__(self): |
| 1588 | return () |
| 1589 | |
| 1590 | aiter = I() |
| 1591 | refs_before = sys.getrefcount(aiter) |
| 1592 | |
| 1593 | async def foo(): |
| 1594 | async for i in aiter: |
| 1595 | print('never going to happen') |
| 1596 | |
| 1597 | with self.assertRaisesRegex( |
| 1598 | TypeError, |
| 1599 | "async for' received an invalid object.*__anext__.*tuple"): |
| 1600 | |
| 1601 | run_async(foo()) |
| 1602 | |
| 1603 | self.assertEqual(sys.getrefcount(aiter), refs_before) |
| 1604 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1605 | def test_for_6(self): |
| 1606 | I = 0 |
| 1607 | |
| 1608 | class Manager: |
| 1609 | async def __aenter__(self): |
| 1610 | nonlocal I |
| 1611 | I += 10000 |
| 1612 | |
| 1613 | async def __aexit__(self, *args): |
| 1614 | nonlocal I |
| 1615 | I += 100000 |
| 1616 | |
| 1617 | class Iterable: |
| 1618 | def __init__(self): |
| 1619 | self.i = 0 |
| 1620 | |
Yury Selivanov | a6f6edb | 2016-06-09 15:08:31 -0400 | [diff] [blame] | 1621 | def __aiter__(self): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1622 | return self |
| 1623 | |
| 1624 | async def __anext__(self): |
| 1625 | if self.i > 10: |
| 1626 | raise StopAsyncIteration |
| 1627 | self.i += 1 |
| 1628 | return self.i |
| 1629 | |
| 1630 | ############## |
| 1631 | |
| 1632 | manager = Manager() |
| 1633 | iterable = Iterable() |
| 1634 | mrefs_before = sys.getrefcount(manager) |
| 1635 | irefs_before = sys.getrefcount(iterable) |
| 1636 | |
| 1637 | async def main(): |
| 1638 | nonlocal I |
| 1639 | |
| 1640 | async with manager: |
| 1641 | async for i in iterable: |
| 1642 | I += 1 |
| 1643 | I += 1000 |
| 1644 | |
Yury Selivanov | a6f6edb | 2016-06-09 15:08:31 -0400 | [diff] [blame] | 1645 | with warnings.catch_warnings(): |
| 1646 | warnings.simplefilter("error") |
Martin Panter | 70c502a | 2016-06-12 06:14:03 +0000 | [diff] [blame] | 1647 | # Test that __aiter__ that returns an asynchronous iterator |
Yury Selivanov | a6f6edb | 2016-06-09 15:08:31 -0400 | [diff] [blame] | 1648 | # directly does not throw any warnings. |
| 1649 | run_async(main()) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1650 | self.assertEqual(I, 111011) |
| 1651 | |
| 1652 | self.assertEqual(sys.getrefcount(manager), mrefs_before) |
| 1653 | self.assertEqual(sys.getrefcount(iterable), irefs_before) |
| 1654 | |
| 1655 | ############## |
| 1656 | |
| 1657 | async def main(): |
| 1658 | nonlocal I |
| 1659 | |
| 1660 | async with Manager(): |
| 1661 | async for i in Iterable(): |
| 1662 | I += 1 |
| 1663 | I += 1000 |
| 1664 | |
| 1665 | async with Manager(): |
| 1666 | async for i in Iterable(): |
| 1667 | I += 1 |
| 1668 | I += 1000 |
| 1669 | |
| 1670 | run_async(main()) |
| 1671 | self.assertEqual(I, 333033) |
| 1672 | |
| 1673 | ############## |
| 1674 | |
| 1675 | async def main(): |
| 1676 | nonlocal I |
| 1677 | |
| 1678 | async with Manager(): |
| 1679 | I += 100 |
| 1680 | async for i in Iterable(): |
| 1681 | I += 1 |
| 1682 | else: |
| 1683 | I += 10000000 |
| 1684 | I += 1000 |
| 1685 | |
| 1686 | async with Manager(): |
| 1687 | I += 100 |
| 1688 | async for i in Iterable(): |
| 1689 | I += 1 |
| 1690 | else: |
| 1691 | I += 10000000 |
| 1692 | I += 1000 |
| 1693 | |
| 1694 | run_async(main()) |
| 1695 | self.assertEqual(I, 20555255) |
| 1696 | |
Yury Selivanov | 9113dc7 | 2015-05-13 16:49:35 -0400 | [diff] [blame] | 1697 | def test_for_7(self): |
| 1698 | CNT = 0 |
| 1699 | class AI: |
Yury Selivanov | faa135a | 2017-10-06 02:08:57 -0400 | [diff] [blame] | 1700 | def __aiter__(self): |
Yury Selivanov | 9113dc7 | 2015-05-13 16:49:35 -0400 | [diff] [blame] | 1701 | 1/0 |
| 1702 | async def foo(): |
| 1703 | nonlocal CNT |
Yury Selivanov | faa135a | 2017-10-06 02:08:57 -0400 | [diff] [blame] | 1704 | async for i in AI(): |
| 1705 | CNT += 1 |
Yury Selivanov | 9113dc7 | 2015-05-13 16:49:35 -0400 | [diff] [blame] | 1706 | CNT += 10 |
| 1707 | with self.assertRaises(ZeroDivisionError): |
| 1708 | run_async(foo()) |
| 1709 | self.assertEqual(CNT, 0) |
| 1710 | |
Yury Selivanov | a6f6edb | 2016-06-09 15:08:31 -0400 | [diff] [blame] | 1711 | def test_for_8(self): |
| 1712 | CNT = 0 |
| 1713 | class AI: |
| 1714 | def __aiter__(self): |
| 1715 | 1/0 |
| 1716 | async def foo(): |
| 1717 | nonlocal CNT |
| 1718 | async for i in AI(): |
| 1719 | CNT += 1 |
| 1720 | CNT += 10 |
| 1721 | with self.assertRaises(ZeroDivisionError): |
| 1722 | with warnings.catch_warnings(): |
| 1723 | warnings.simplefilter("error") |
| 1724 | # Test that if __aiter__ raises an exception it propagates |
| 1725 | # without any kind of warning. |
| 1726 | run_async(foo()) |
| 1727 | self.assertEqual(CNT, 0) |
| 1728 | |
Yury Selivanov | 398ff91 | 2017-03-02 22:20:00 -0500 | [diff] [blame] | 1729 | def test_for_11(self): |
| 1730 | class F: |
| 1731 | def __aiter__(self): |
| 1732 | return self |
| 1733 | def __anext__(self): |
| 1734 | return self |
| 1735 | def __await__(self): |
| 1736 | 1 / 0 |
| 1737 | |
| 1738 | async def main(): |
| 1739 | async for _ in F(): |
| 1740 | pass |
| 1741 | |
| 1742 | with self.assertRaisesRegex(TypeError, |
| 1743 | 'an invalid object from __anext__') as c: |
| 1744 | main().send(None) |
| 1745 | |
| 1746 | err = c.exception |
| 1747 | self.assertIsInstance(err.__cause__, ZeroDivisionError) |
| 1748 | |
Serhiy Storchaka | 24411f8 | 2016-11-06 18:44:42 +0200 | [diff] [blame] | 1749 | def test_for_tuple(self): |
| 1750 | class Done(Exception): pass |
| 1751 | |
| 1752 | class AIter(tuple): |
| 1753 | i = 0 |
| 1754 | def __aiter__(self): |
| 1755 | return self |
| 1756 | async def __anext__(self): |
| 1757 | if self.i >= len(self): |
| 1758 | raise StopAsyncIteration |
| 1759 | self.i += 1 |
| 1760 | return self[self.i - 1] |
| 1761 | |
| 1762 | result = [] |
| 1763 | async def foo(): |
| 1764 | async for i in AIter([42]): |
| 1765 | result.append(i) |
| 1766 | raise Done |
| 1767 | |
| 1768 | with self.assertRaises(Done): |
| 1769 | foo().send(None) |
| 1770 | self.assertEqual(result, [42]) |
| 1771 | |
| 1772 | def test_for_stop_iteration(self): |
| 1773 | class Done(Exception): pass |
| 1774 | |
| 1775 | class AIter(StopIteration): |
| 1776 | i = 0 |
| 1777 | def __aiter__(self): |
| 1778 | return self |
| 1779 | async def __anext__(self): |
| 1780 | if self.i: |
| 1781 | raise StopAsyncIteration |
| 1782 | self.i += 1 |
| 1783 | return self.value |
| 1784 | |
| 1785 | result = [] |
| 1786 | async def foo(): |
| 1787 | async for i in AIter(42): |
| 1788 | result.append(i) |
| 1789 | raise Done |
| 1790 | |
| 1791 | with self.assertRaises(Done): |
| 1792 | foo().send(None) |
| 1793 | self.assertEqual(result, [42]) |
| 1794 | |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 1795 | def test_comp_1(self): |
| 1796 | async def f(i): |
| 1797 | return i |
| 1798 | |
| 1799 | async def run_list(): |
| 1800 | return [await c for c in [f(1), f(41)]] |
| 1801 | |
| 1802 | async def run_set(): |
| 1803 | return {await c for c in [f(1), f(41)]} |
| 1804 | |
| 1805 | async def run_dict1(): |
| 1806 | return {await c: 'a' for c in [f(1), f(41)]} |
| 1807 | |
| 1808 | async def run_dict2(): |
| 1809 | return {i: await c for i, c in enumerate([f(1), f(41)])} |
| 1810 | |
| 1811 | self.assertEqual(run_async(run_list()), ([], [1, 41])) |
| 1812 | self.assertEqual(run_async(run_set()), ([], {1, 41})) |
| 1813 | self.assertEqual(run_async(run_dict1()), ([], {1: 'a', 41: 'a'})) |
| 1814 | self.assertEqual(run_async(run_dict2()), ([], {0: 1, 1: 41})) |
| 1815 | |
| 1816 | def test_comp_2(self): |
| 1817 | async def f(i): |
| 1818 | return i |
| 1819 | |
| 1820 | async def run_list(): |
| 1821 | return [s for c in [f(''), f('abc'), f(''), f(['de', 'fg'])] |
| 1822 | for s in await c] |
| 1823 | |
| 1824 | self.assertEqual( |
| 1825 | run_async(run_list()), |
| 1826 | ([], ['a', 'b', 'c', 'de', 'fg'])) |
| 1827 | |
| 1828 | async def run_set(): |
| 1829 | return {d |
| 1830 | for c in [f([f([10, 30]), |
| 1831 | f([20])])] |
| 1832 | for s in await c |
| 1833 | for d in await s} |
| 1834 | |
| 1835 | self.assertEqual( |
| 1836 | run_async(run_set()), |
| 1837 | ([], {10, 20, 30})) |
| 1838 | |
| 1839 | async def run_set2(): |
| 1840 | return {await s |
| 1841 | for c in [f([f(10), f(20)])] |
| 1842 | for s in await c} |
| 1843 | |
| 1844 | self.assertEqual( |
| 1845 | run_async(run_set2()), |
| 1846 | ([], {10, 20})) |
| 1847 | |
| 1848 | def test_comp_3(self): |
| 1849 | async def f(it): |
| 1850 | for i in it: |
| 1851 | yield i |
| 1852 | |
| 1853 | async def run_list(): |
| 1854 | return [i + 1 async for i in f([10, 20])] |
| 1855 | self.assertEqual( |
| 1856 | run_async(run_list()), |
| 1857 | ([], [11, 21])) |
| 1858 | |
| 1859 | async def run_set(): |
| 1860 | return {i + 1 async for i in f([10, 20])} |
| 1861 | self.assertEqual( |
| 1862 | run_async(run_set()), |
| 1863 | ([], {11, 21})) |
| 1864 | |
| 1865 | async def run_dict(): |
| 1866 | return {i + 1: i + 2 async for i in f([10, 20])} |
| 1867 | self.assertEqual( |
| 1868 | run_async(run_dict()), |
| 1869 | ([], {11: 12, 21: 22})) |
| 1870 | |
| 1871 | async def run_gen(): |
| 1872 | gen = (i + 1 async for i in f([10, 20])) |
| 1873 | return [g + 100 async for g in gen] |
| 1874 | self.assertEqual( |
| 1875 | run_async(run_gen()), |
| 1876 | ([], [111, 121])) |
| 1877 | |
| 1878 | def test_comp_4(self): |
| 1879 | async def f(it): |
| 1880 | for i in it: |
| 1881 | yield i |
| 1882 | |
| 1883 | async def run_list(): |
| 1884 | return [i + 1 async for i in f([10, 20]) if i > 10] |
| 1885 | self.assertEqual( |
| 1886 | run_async(run_list()), |
| 1887 | ([], [21])) |
| 1888 | |
| 1889 | async def run_set(): |
| 1890 | return {i + 1 async for i in f([10, 20]) if i > 10} |
| 1891 | self.assertEqual( |
| 1892 | run_async(run_set()), |
| 1893 | ([], {21})) |
| 1894 | |
| 1895 | async def run_dict(): |
| 1896 | return {i + 1: i + 2 async for i in f([10, 20]) if i > 10} |
| 1897 | self.assertEqual( |
| 1898 | run_async(run_dict()), |
| 1899 | ([], {21: 22})) |
| 1900 | |
| 1901 | async def run_gen(): |
| 1902 | gen = (i + 1 async for i in f([10, 20]) if i > 10) |
| 1903 | return [g + 100 async for g in gen] |
| 1904 | self.assertEqual( |
| 1905 | run_async(run_gen()), |
| 1906 | ([], [121])) |
| 1907 | |
Serhiy Storchaka | 702f8f3 | 2018-03-23 14:34:35 +0200 | [diff] [blame] | 1908 | def test_comp_4_2(self): |
| 1909 | async def f(it): |
| 1910 | for i in it: |
| 1911 | yield i |
| 1912 | |
| 1913 | async def run_list(): |
| 1914 | return [i + 10 async for i in f(range(5)) if 0 < i < 4] |
| 1915 | self.assertEqual( |
| 1916 | run_async(run_list()), |
| 1917 | ([], [11, 12, 13])) |
| 1918 | |
| 1919 | async def run_set(): |
| 1920 | return {i + 10 async for i in f(range(5)) if 0 < i < 4} |
| 1921 | self.assertEqual( |
| 1922 | run_async(run_set()), |
| 1923 | ([], {11, 12, 13})) |
| 1924 | |
| 1925 | async def run_dict(): |
| 1926 | return {i + 10: i + 100 async for i in f(range(5)) if 0 < i < 4} |
| 1927 | self.assertEqual( |
| 1928 | run_async(run_dict()), |
| 1929 | ([], {11: 101, 12: 102, 13: 103})) |
| 1930 | |
| 1931 | async def run_gen(): |
| 1932 | gen = (i + 10 async for i in f(range(5)) if 0 < i < 4) |
| 1933 | return [g + 100 async for g in gen] |
| 1934 | self.assertEqual( |
| 1935 | run_async(run_gen()), |
| 1936 | ([], [111, 112, 113])) |
| 1937 | |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 1938 | def test_comp_5(self): |
| 1939 | async def f(it): |
| 1940 | for i in it: |
| 1941 | yield i |
| 1942 | |
| 1943 | async def run_list(): |
| 1944 | return [i + 1 for pair in ([10, 20], [30, 40]) if pair[0] > 10 |
| 1945 | async for i in f(pair) if i > 30] |
| 1946 | self.assertEqual( |
| 1947 | run_async(run_list()), |
| 1948 | ([], [41])) |
| 1949 | |
| 1950 | def test_comp_6(self): |
| 1951 | async def f(it): |
| 1952 | for i in it: |
| 1953 | yield i |
| 1954 | |
| 1955 | async def run_list(): |
| 1956 | return [i + 1 async for seq in f([(10, 20), (30,)]) |
| 1957 | for i in seq] |
| 1958 | |
| 1959 | self.assertEqual( |
| 1960 | run_async(run_list()), |
| 1961 | ([], [11, 21, 31])) |
| 1962 | |
| 1963 | def test_comp_7(self): |
| 1964 | async def f(): |
| 1965 | yield 1 |
| 1966 | yield 2 |
| 1967 | raise Exception('aaa') |
| 1968 | |
| 1969 | async def run_list(): |
| 1970 | return [i async for i in f()] |
| 1971 | |
| 1972 | with self.assertRaisesRegex(Exception, 'aaa'): |
| 1973 | run_async(run_list()) |
| 1974 | |
| 1975 | def test_comp_8(self): |
| 1976 | async def f(): |
| 1977 | return [i for i in [1, 2, 3]] |
| 1978 | |
| 1979 | self.assertEqual( |
| 1980 | run_async(f()), |
| 1981 | ([], [1, 2, 3])) |
| 1982 | |
| 1983 | def test_comp_9(self): |
| 1984 | async def gen(): |
| 1985 | yield 1 |
| 1986 | yield 2 |
| 1987 | async def f(): |
| 1988 | l = [i async for i in gen()] |
| 1989 | return [i for i in l] |
| 1990 | |
| 1991 | self.assertEqual( |
| 1992 | run_async(f()), |
| 1993 | ([], [1, 2])) |
| 1994 | |
| 1995 | def test_comp_10(self): |
| 1996 | async def f(): |
| 1997 | xx = {i for i in [1, 2, 3]} |
| 1998 | return {x: x for x in xx} |
| 1999 | |
| 2000 | self.assertEqual( |
| 2001 | run_async(f()), |
| 2002 | ([], {1: 1, 2: 2, 3: 3})) |
| 2003 | |
Serhiy Storchaka | 609a2e1 | 2015-11-12 11:31:51 +0200 | [diff] [blame] | 2004 | def test_copy(self): |
| 2005 | async def func(): pass |
| 2006 | coro = func() |
| 2007 | with self.assertRaises(TypeError): |
| 2008 | copy.copy(coro) |
| 2009 | |
| 2010 | aw = coro.__await__() |
| 2011 | try: |
| 2012 | with self.assertRaises(TypeError): |
| 2013 | copy.copy(aw) |
| 2014 | finally: |
| 2015 | aw.close() |
| 2016 | |
| 2017 | def test_pickle(self): |
| 2018 | async def func(): pass |
| 2019 | coro = func() |
| 2020 | for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
| 2021 | with self.assertRaises((TypeError, pickle.PicklingError)): |
| 2022 | pickle.dumps(coro, proto) |
| 2023 | |
| 2024 | aw = coro.__await__() |
| 2025 | try: |
| 2026 | for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
| 2027 | with self.assertRaises((TypeError, pickle.PicklingError)): |
| 2028 | pickle.dumps(aw, proto) |
| 2029 | finally: |
| 2030 | aw.close() |
| 2031 | |
Benjamin Peterson | 2f40ed4 | 2016-09-05 10:14:54 -0700 | [diff] [blame] | 2032 | def test_fatal_coro_warning(self): |
| 2033 | # Issue 27811 |
| 2034 | async def func(): pass |
Victor Stinner | 0025350 | 2019-06-03 03:51:43 +0200 | [diff] [blame] | 2035 | with warnings.catch_warnings(), \ |
| 2036 | support.catch_unraisable_exception() as cm: |
Benjamin Peterson | 2f40ed4 | 2016-09-05 10:14:54 -0700 | [diff] [blame] | 2037 | warnings.filterwarnings("error") |
Victor Stinner | 0025350 | 2019-06-03 03:51:43 +0200 | [diff] [blame] | 2038 | coro = func() |
| 2039 | # only store repr() to avoid keeping the coroutine alive |
| 2040 | coro_repr = repr(coro) |
| 2041 | coro = None |
Benjamin Peterson | 2f40ed4 | 2016-09-05 10:14:54 -0700 | [diff] [blame] | 2042 | support.gc_collect() |
Victor Stinner | 0025350 | 2019-06-03 03:51:43 +0200 | [diff] [blame] | 2043 | |
| 2044 | self.assertIn("was never awaited", str(cm.unraisable.exc_value)) |
| 2045 | self.assertEqual(repr(cm.unraisable.object), coro_repr) |
Benjamin Peterson | 2f40ed4 | 2016-09-05 10:14:54 -0700 | [diff] [blame] | 2046 | |
Serhiy Storchaka | 24d3201 | 2018-03-10 18:22:34 +0200 | [diff] [blame] | 2047 | def test_for_assign_raising_stop_async_iteration(self): |
| 2048 | class BadTarget: |
| 2049 | def __setitem__(self, key, value): |
| 2050 | raise StopAsyncIteration(42) |
| 2051 | tgt = BadTarget() |
| 2052 | async def source(): |
| 2053 | yield 10 |
| 2054 | |
| 2055 | async def run_for(): |
| 2056 | with self.assertRaises(StopAsyncIteration) as cm: |
| 2057 | async for tgt[0] in source(): |
| 2058 | pass |
| 2059 | self.assertEqual(cm.exception.args, (42,)) |
| 2060 | return 'end' |
| 2061 | self.assertEqual(run_async(run_for()), ([], 'end')) |
| 2062 | |
| 2063 | async def run_list(): |
| 2064 | with self.assertRaises(StopAsyncIteration) as cm: |
| 2065 | return [0 async for tgt[0] in source()] |
| 2066 | self.assertEqual(cm.exception.args, (42,)) |
| 2067 | return 'end' |
| 2068 | self.assertEqual(run_async(run_list()), ([], 'end')) |
| 2069 | |
| 2070 | async def run_gen(): |
| 2071 | gen = (0 async for tgt[0] in source()) |
| 2072 | a = gen.asend(None) |
| 2073 | with self.assertRaises(RuntimeError) as cm: |
| 2074 | await a |
| 2075 | self.assertIsInstance(cm.exception.__cause__, StopAsyncIteration) |
| 2076 | self.assertEqual(cm.exception.__cause__.args, (42,)) |
| 2077 | return 'end' |
| 2078 | self.assertEqual(run_async(run_gen()), ([], 'end')) |
| 2079 | |
| 2080 | def test_for_assign_raising_stop_async_iteration_2(self): |
| 2081 | class BadIterable: |
| 2082 | def __iter__(self): |
| 2083 | raise StopAsyncIteration(42) |
| 2084 | async def badpairs(): |
| 2085 | yield BadIterable() |
| 2086 | |
| 2087 | async def run_for(): |
| 2088 | with self.assertRaises(StopAsyncIteration) as cm: |
| 2089 | async for i, j in badpairs(): |
| 2090 | pass |
| 2091 | self.assertEqual(cm.exception.args, (42,)) |
| 2092 | return 'end' |
| 2093 | self.assertEqual(run_async(run_for()), ([], 'end')) |
| 2094 | |
| 2095 | async def run_list(): |
| 2096 | with self.assertRaises(StopAsyncIteration) as cm: |
| 2097 | return [0 async for i, j in badpairs()] |
| 2098 | self.assertEqual(cm.exception.args, (42,)) |
| 2099 | return 'end' |
| 2100 | self.assertEqual(run_async(run_list()), ([], 'end')) |
| 2101 | |
| 2102 | async def run_gen(): |
| 2103 | gen = (0 async for i, j in badpairs()) |
| 2104 | a = gen.asend(None) |
| 2105 | with self.assertRaises(RuntimeError) as cm: |
| 2106 | await a |
| 2107 | self.assertIsInstance(cm.exception.__cause__, StopAsyncIteration) |
| 2108 | self.assertEqual(cm.exception.__cause__.args, (42,)) |
| 2109 | return 'end' |
| 2110 | self.assertEqual(run_async(run_gen()), ([], 'end')) |
| 2111 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2112 | |
| 2113 | class CoroAsyncIOCompatTest(unittest.TestCase): |
| 2114 | |
| 2115 | def test_asyncio_1(self): |
Victor Stinner | b45c0f7 | 2015-10-11 10:10:31 +0200 | [diff] [blame] | 2116 | # asyncio cannot be imported when Python is compiled without thread |
| 2117 | # support |
Victor Stinner | 718c984 | 2015-10-11 10:53:15 +0200 | [diff] [blame] | 2118 | asyncio = support.import_module('asyncio') |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2119 | |
| 2120 | class MyException(Exception): |
| 2121 | pass |
| 2122 | |
| 2123 | buffer = [] |
| 2124 | |
| 2125 | class CM: |
| 2126 | async def __aenter__(self): |
| 2127 | buffer.append(1) |
| 2128 | await asyncio.sleep(0.01) |
| 2129 | buffer.append(2) |
| 2130 | return self |
| 2131 | |
| 2132 | async def __aexit__(self, exc_type, exc_val, exc_tb): |
| 2133 | await asyncio.sleep(0.01) |
| 2134 | buffer.append(exc_type.__name__) |
| 2135 | |
| 2136 | async def f(): |
| 2137 | async with CM() as c: |
| 2138 | await asyncio.sleep(0.01) |
| 2139 | raise MyException |
| 2140 | buffer.append('unreachable') |
| 2141 | |
Yury Selivanov | fdba838 | 2015-05-12 14:28:08 -0400 | [diff] [blame] | 2142 | loop = asyncio.new_event_loop() |
| 2143 | asyncio.set_event_loop(loop) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2144 | try: |
| 2145 | loop.run_until_complete(f()) |
| 2146 | except MyException: |
| 2147 | pass |
| 2148 | finally: |
| 2149 | loop.close() |
Brett Cannon | 8425de4 | 2018-06-01 20:34:09 -0700 | [diff] [blame] | 2150 | asyncio.set_event_loop_policy(None) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2151 | |
| 2152 | self.assertEqual(buffer, [1, 2, 'MyException']) |
| 2153 | |
| 2154 | |
Nathaniel J. Smith | fc2f407 | 2018-01-21 06:44:07 -0800 | [diff] [blame] | 2155 | class OriginTrackingTest(unittest.TestCase): |
| 2156 | def here(self): |
| 2157 | info = inspect.getframeinfo(inspect.currentframe().f_back) |
| 2158 | return (info.filename, info.lineno) |
| 2159 | |
| 2160 | def test_origin_tracking(self): |
| 2161 | orig_depth = sys.get_coroutine_origin_tracking_depth() |
| 2162 | try: |
| 2163 | async def corofn(): |
| 2164 | pass |
| 2165 | |
| 2166 | sys.set_coroutine_origin_tracking_depth(0) |
| 2167 | self.assertEqual(sys.get_coroutine_origin_tracking_depth(), 0) |
| 2168 | |
| 2169 | with contextlib.closing(corofn()) as coro: |
| 2170 | self.assertIsNone(coro.cr_origin) |
| 2171 | |
| 2172 | sys.set_coroutine_origin_tracking_depth(1) |
| 2173 | self.assertEqual(sys.get_coroutine_origin_tracking_depth(), 1) |
| 2174 | |
| 2175 | fname, lineno = self.here() |
| 2176 | with contextlib.closing(corofn()) as coro: |
| 2177 | self.assertEqual(coro.cr_origin, |
| 2178 | ((fname, lineno + 1, "test_origin_tracking"),)) |
| 2179 | |
| 2180 | sys.set_coroutine_origin_tracking_depth(2) |
| 2181 | self.assertEqual(sys.get_coroutine_origin_tracking_depth(), 2) |
| 2182 | |
| 2183 | def nested(): |
| 2184 | return (self.here(), corofn()) |
| 2185 | fname, lineno = self.here() |
| 2186 | ((nested_fname, nested_lineno), coro) = nested() |
| 2187 | with contextlib.closing(coro): |
| 2188 | self.assertEqual(coro.cr_origin, |
| 2189 | ((nested_fname, nested_lineno, "nested"), |
| 2190 | (fname, lineno + 1, "test_origin_tracking"))) |
| 2191 | |
| 2192 | # Check we handle running out of frames correctly |
| 2193 | sys.set_coroutine_origin_tracking_depth(1000) |
| 2194 | with contextlib.closing(corofn()) as coro: |
| 2195 | self.assertTrue(2 < len(coro.cr_origin) < 1000) |
| 2196 | |
| 2197 | # We can't set depth negative |
| 2198 | with self.assertRaises(ValueError): |
| 2199 | sys.set_coroutine_origin_tracking_depth(-1) |
| 2200 | # And trying leaves it unchanged |
| 2201 | self.assertEqual(sys.get_coroutine_origin_tracking_depth(), 1000) |
| 2202 | |
| 2203 | finally: |
| 2204 | sys.set_coroutine_origin_tracking_depth(orig_depth) |
| 2205 | |
| 2206 | def test_origin_tracking_warning(self): |
| 2207 | async def corofn(): |
| 2208 | pass |
| 2209 | |
| 2210 | a1_filename, a1_lineno = self.here() |
| 2211 | def a1(): |
| 2212 | return corofn() # comment in a1 |
| 2213 | a1_lineno += 2 |
| 2214 | |
| 2215 | a2_filename, a2_lineno = self.here() |
| 2216 | def a2(): |
| 2217 | return a1() # comment in a2 |
| 2218 | a2_lineno += 2 |
| 2219 | |
| 2220 | def check(depth, msg): |
| 2221 | sys.set_coroutine_origin_tracking_depth(depth) |
Nathaniel J. Smith | 2efb973 | 2018-02-01 20:55:55 -0800 | [diff] [blame] | 2222 | with self.assertWarns(RuntimeWarning) as cm: |
Nathaniel J. Smith | fc2f407 | 2018-01-21 06:44:07 -0800 | [diff] [blame] | 2223 | a2() |
| 2224 | support.gc_collect() |
Nathaniel J. Smith | 2efb973 | 2018-02-01 20:55:55 -0800 | [diff] [blame] | 2225 | self.assertEqual(msg, str(cm.warning)) |
Nathaniel J. Smith | fc2f407 | 2018-01-21 06:44:07 -0800 | [diff] [blame] | 2226 | |
| 2227 | orig_depth = sys.get_coroutine_origin_tracking_depth() |
| 2228 | try: |
| 2229 | msg = check(0, f"coroutine '{corofn.__qualname__}' was never awaited") |
| 2230 | check(1, "".join([ |
| 2231 | f"coroutine '{corofn.__qualname__}' was never awaited\n", |
| 2232 | "Coroutine created at (most recent call last)\n", |
| 2233 | f' File "{a1_filename}", line {a1_lineno}, in a1\n', |
| 2234 | f' return corofn() # comment in a1', |
| 2235 | ])) |
| 2236 | check(2, "".join([ |
| 2237 | f"coroutine '{corofn.__qualname__}' was never awaited\n", |
| 2238 | "Coroutine created at (most recent call last)\n", |
| 2239 | f' File "{a2_filename}", line {a2_lineno}, in a2\n', |
| 2240 | f' return a1() # comment in a2\n', |
| 2241 | f' File "{a1_filename}", line {a1_lineno}, in a1\n', |
| 2242 | f' return corofn() # comment in a1', |
| 2243 | ])) |
| 2244 | |
| 2245 | finally: |
| 2246 | sys.set_coroutine_origin_tracking_depth(orig_depth) |
| 2247 | |
| 2248 | def test_unawaited_warning_when_module_broken(self): |
| 2249 | # Make sure we don't blow up too bad if |
| 2250 | # warnings._warn_unawaited_coroutine is broken somehow (e.g. because |
| 2251 | # of shutdown problems) |
| 2252 | async def corofn(): |
| 2253 | pass |
| 2254 | |
| 2255 | orig_wuc = warnings._warn_unawaited_coroutine |
| 2256 | try: |
| 2257 | warnings._warn_unawaited_coroutine = lambda coro: 1/0 |
Victor Stinner | e4d300e | 2019-05-22 23:44:02 +0200 | [diff] [blame] | 2258 | with support.catch_unraisable_exception() as cm, \ |
Victor Stinner | 3cf7ea1 | 2019-06-03 01:35:37 +0200 | [diff] [blame] | 2259 | support.check_warnings((r'coroutine .* was never awaited', |
| 2260 | RuntimeWarning)): |
Victor Stinner | e4d300e | 2019-05-22 23:44:02 +0200 | [diff] [blame] | 2261 | # only store repr() to avoid keeping the coroutine alive |
| 2262 | coro = corofn() |
| 2263 | coro_repr = repr(coro) |
| 2264 | |
| 2265 | # clear reference to the coroutine without awaiting for it |
| 2266 | del coro |
Nathaniel J. Smith | fc2f407 | 2018-01-21 06:44:07 -0800 | [diff] [blame] | 2267 | support.gc_collect() |
Victor Stinner | e4d300e | 2019-05-22 23:44:02 +0200 | [diff] [blame] | 2268 | |
| 2269 | self.assertEqual(repr(cm.unraisable.object), coro_repr) |
| 2270 | self.assertEqual(cm.unraisable.exc_type, ZeroDivisionError) |
Nathaniel J. Smith | fc2f407 | 2018-01-21 06:44:07 -0800 | [diff] [blame] | 2271 | |
| 2272 | del warnings._warn_unawaited_coroutine |
Victor Stinner | 3cf7ea1 | 2019-06-03 01:35:37 +0200 | [diff] [blame] | 2273 | with support.check_warnings((r'coroutine .* was never awaited', |
| 2274 | RuntimeWarning)): |
Nathaniel J. Smith | fc2f407 | 2018-01-21 06:44:07 -0800 | [diff] [blame] | 2275 | corofn() |
| 2276 | support.gc_collect() |
Nathaniel J. Smith | fc2f407 | 2018-01-21 06:44:07 -0800 | [diff] [blame] | 2277 | |
| 2278 | finally: |
| 2279 | warnings._warn_unawaited_coroutine = orig_wuc |
| 2280 | |
Nathaniel J. Smith | dba976b | 2018-01-26 11:28:31 -0800 | [diff] [blame] | 2281 | |
| 2282 | class UnawaitedWarningDuringShutdownTest(unittest.TestCase): |
| 2283 | # https://bugs.python.org/issue32591#msg310726 |
| 2284 | def test_unawaited_warning_during_shutdown(self): |
| 2285 | code = ("import asyncio\n" |
| 2286 | "async def f(): pass\n" |
| 2287 | "asyncio.gather(f())\n") |
| 2288 | assert_python_ok("-c", code) |
| 2289 | |
| 2290 | code = ("import sys\n" |
| 2291 | "async def f(): pass\n" |
| 2292 | "sys.coro = f()\n") |
| 2293 | assert_python_ok("-c", code) |
| 2294 | |
| 2295 | code = ("import sys\n" |
| 2296 | "async def f(): pass\n" |
| 2297 | "sys.corocycle = [f()]\n" |
| 2298 | "sys.corocycle.append(sys.corocycle)\n") |
| 2299 | assert_python_ok("-c", code) |
| 2300 | |
| 2301 | |
Serhiy Storchaka | 24c738a | 2017-03-19 20:20:10 +0200 | [diff] [blame] | 2302 | @support.cpython_only |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2303 | class CAPITest(unittest.TestCase): |
| 2304 | |
| 2305 | def test_tp_await_1(self): |
| 2306 | from _testcapi import awaitType as at |
| 2307 | |
| 2308 | async def foo(): |
| 2309 | future = at(iter([1])) |
| 2310 | return (await future) |
| 2311 | |
| 2312 | self.assertEqual(foo().send(None), 1) |
| 2313 | |
| 2314 | def test_tp_await_2(self): |
| 2315 | # Test tp_await to __await__ mapping |
| 2316 | from _testcapi import awaitType as at |
| 2317 | future = at(iter([1])) |
| 2318 | self.assertEqual(next(future.__await__()), 1) |
| 2319 | |
| 2320 | def test_tp_await_3(self): |
| 2321 | from _testcapi import awaitType as at |
| 2322 | |
| 2323 | async def foo(): |
| 2324 | future = at(1) |
| 2325 | return (await future) |
| 2326 | |
| 2327 | with self.assertRaisesRegex( |
| 2328 | TypeError, "__await__.*returned non-iterator of type 'int'"): |
| 2329 | self.assertEqual(foo().send(None), 1) |
| 2330 | |
| 2331 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2332 | if __name__=="__main__": |
Zachary Ware | 37ac590 | 2015-05-13 01:03:06 -0500 | [diff] [blame] | 2333 | unittest.main() |