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 |
| 10 | |
| 11 | |
| 12 | class AsyncYieldFrom: |
| 13 | def __init__(self, obj): |
| 14 | self.obj = obj |
| 15 | |
| 16 | def __await__(self): |
| 17 | yield from self.obj |
| 18 | |
| 19 | |
| 20 | class AsyncYield: |
| 21 | def __init__(self, value): |
| 22 | self.value = value |
| 23 | |
| 24 | def __await__(self): |
| 25 | yield self.value |
| 26 | |
| 27 | |
| 28 | def run_async(coro): |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 29 | assert coro.__class__ in {types.GeneratorType, types.CoroutineType} |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 30 | |
| 31 | buffer = [] |
| 32 | result = None |
| 33 | while True: |
| 34 | try: |
| 35 | buffer.append(coro.send(None)) |
| 36 | except StopIteration as ex: |
| 37 | result = ex.args[0] if ex.args else None |
| 38 | break |
| 39 | return buffer, result |
| 40 | |
| 41 | |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 42 | def run_async__await__(coro): |
| 43 | assert coro.__class__ is types.CoroutineType |
| 44 | aw = coro.__await__() |
| 45 | buffer = [] |
| 46 | result = None |
| 47 | i = 0 |
| 48 | while True: |
| 49 | try: |
| 50 | if i % 2: |
| 51 | buffer.append(next(aw)) |
| 52 | else: |
| 53 | buffer.append(aw.send(None)) |
| 54 | i += 1 |
| 55 | except StopIteration as ex: |
| 56 | result = ex.args[0] if ex.args else None |
| 57 | break |
| 58 | return buffer, result |
| 59 | |
| 60 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 61 | @contextlib.contextmanager |
| 62 | def silence_coro_gc(): |
| 63 | with warnings.catch_warnings(): |
| 64 | warnings.simplefilter("ignore") |
| 65 | yield |
| 66 | support.gc_collect() |
| 67 | |
| 68 | |
| 69 | class AsyncBadSyntaxTest(unittest.TestCase): |
| 70 | |
| 71 | def test_badsyntax_1(self): |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 72 | with self.assertRaisesRegex(SyntaxError, "'await' outside"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 73 | import test.badsyntax_async1 |
| 74 | |
| 75 | def test_badsyntax_2(self): |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 76 | with self.assertRaisesRegex(SyntaxError, "'await' outside"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 77 | import test.badsyntax_async2 |
| 78 | |
| 79 | def test_badsyntax_3(self): |
| 80 | with self.assertRaisesRegex(SyntaxError, 'invalid syntax'): |
| 81 | import test.badsyntax_async3 |
| 82 | |
| 83 | def test_badsyntax_4(self): |
| 84 | with self.assertRaisesRegex(SyntaxError, 'invalid syntax'): |
| 85 | import test.badsyntax_async4 |
| 86 | |
| 87 | def test_badsyntax_5(self): |
| 88 | with self.assertRaisesRegex(SyntaxError, 'invalid syntax'): |
| 89 | import test.badsyntax_async5 |
| 90 | |
| 91 | def test_badsyntax_6(self): |
| 92 | with self.assertRaisesRegex( |
| 93 | SyntaxError, "'yield' inside async function"): |
| 94 | |
| 95 | import test.badsyntax_async6 |
| 96 | |
| 97 | def test_badsyntax_7(self): |
| 98 | with self.assertRaisesRegex( |
| 99 | SyntaxError, "'yield from' inside async function"): |
| 100 | |
| 101 | import test.badsyntax_async7 |
| 102 | |
| 103 | def test_badsyntax_8(self): |
| 104 | with self.assertRaisesRegex(SyntaxError, 'invalid syntax'): |
| 105 | import test.badsyntax_async8 |
| 106 | |
| 107 | def test_badsyntax_9(self): |
Yury Selivanov | 9dec035 | 2015-06-30 12:49:04 -0400 | [diff] [blame] | 108 | ns = {} |
| 109 | for comp in {'(await a for a in b)', |
| 110 | '[await a for a in b]', |
| 111 | '{await a for a in b}', |
| 112 | '{await a: c for a in b}'}: |
| 113 | |
Yury Selivanov | 86cd7d6 | 2015-06-30 12:51:12 -0400 | [diff] [blame] | 114 | with self.assertRaisesRegex(SyntaxError, 'await.*in comprehen'): |
Yury Selivanov | 9dec035 | 2015-06-30 12:49:04 -0400 | [diff] [blame] | 115 | exec('async def f():\n\t{}'.format(comp), ns, ns) |
| 116 | |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 117 | def test_badsyntax_10(self): |
| 118 | # Tests for issue 24619 |
| 119 | |
| 120 | samples = [ |
| 121 | """async def foo(): |
| 122 | def bar(): pass |
| 123 | await = 1 |
| 124 | """, |
| 125 | |
| 126 | """async def foo(): |
| 127 | |
| 128 | def bar(): pass |
| 129 | await = 1 |
| 130 | """, |
| 131 | |
| 132 | """async def foo(): |
| 133 | def bar(): pass |
| 134 | if 1: |
| 135 | await = 1 |
| 136 | """, |
| 137 | |
| 138 | """def foo(): |
| 139 | async def bar(): pass |
| 140 | if 1: |
| 141 | await a |
| 142 | """, |
| 143 | |
| 144 | """def foo(): |
| 145 | async def bar(): pass |
| 146 | await a |
| 147 | """, |
| 148 | |
| 149 | """def foo(): |
| 150 | def baz(): pass |
| 151 | async def bar(): pass |
| 152 | await a |
| 153 | """, |
| 154 | |
| 155 | """def foo(): |
| 156 | def baz(): pass |
| 157 | # 456 |
| 158 | async def bar(): pass |
| 159 | # 123 |
| 160 | await a |
| 161 | """, |
| 162 | |
| 163 | """async def foo(): |
| 164 | def baz(): pass |
| 165 | # 456 |
| 166 | async def bar(): pass |
| 167 | # 123 |
| 168 | await = 2 |
| 169 | """, |
| 170 | |
| 171 | """def foo(): |
| 172 | |
| 173 | def baz(): pass |
| 174 | |
| 175 | async def bar(): pass |
| 176 | |
| 177 | await a |
| 178 | """, |
| 179 | |
| 180 | """async def foo(): |
| 181 | |
| 182 | def baz(): pass |
| 183 | |
| 184 | async def bar(): pass |
| 185 | |
| 186 | await = 2 |
| 187 | """, |
| 188 | |
| 189 | """async def foo(): |
| 190 | def async(): pass |
| 191 | """, |
| 192 | |
| 193 | """async def foo(): |
| 194 | def await(): pass |
| 195 | """, |
| 196 | |
| 197 | """async def foo(): |
| 198 | def bar(): |
| 199 | await |
| 200 | """, |
| 201 | |
| 202 | """async def foo(): |
| 203 | return lambda async: await |
| 204 | """, |
| 205 | |
| 206 | """async def foo(): |
| 207 | return lambda a: await |
| 208 | """, |
| 209 | |
Yury Selivanov | b7666a3 | 2015-07-22 14:48:57 +0300 | [diff] [blame] | 210 | """await a()""", |
| 211 | |
| 212 | """async def foo(a=await b): |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 213 | pass |
| 214 | """, |
| 215 | |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 216 | """async def foo(a:await b): |
| 217 | pass |
| 218 | """, |
| 219 | |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 220 | """def baz(): |
Yury Selivanov | b7666a3 | 2015-07-22 14:48:57 +0300 | [diff] [blame] | 221 | async def foo(a=await b): |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 222 | pass |
| 223 | """, |
| 224 | |
| 225 | """async def foo(async): |
| 226 | pass |
| 227 | """, |
| 228 | |
| 229 | """async def foo(): |
| 230 | def bar(): |
| 231 | def baz(): |
| 232 | async = 1 |
| 233 | """, |
| 234 | |
| 235 | """async def foo(): |
| 236 | def bar(): |
| 237 | def baz(): |
| 238 | pass |
| 239 | async = 1 |
| 240 | """, |
| 241 | |
| 242 | """def foo(): |
| 243 | async def bar(): |
| 244 | |
| 245 | async def baz(): |
| 246 | pass |
| 247 | |
| 248 | def baz(): |
| 249 | 42 |
| 250 | |
| 251 | async = 1 |
| 252 | """, |
| 253 | |
| 254 | """async def foo(): |
| 255 | def bar(): |
| 256 | def baz(): |
| 257 | pass\nawait foo() |
| 258 | """, |
| 259 | |
| 260 | """def foo(): |
| 261 | def bar(): |
| 262 | async def baz(): |
| 263 | pass\nawait foo() |
| 264 | """, |
| 265 | |
| 266 | """async def foo(await): |
| 267 | pass |
| 268 | """, |
| 269 | |
| 270 | """def foo(): |
| 271 | |
| 272 | async def bar(): pass |
| 273 | |
| 274 | await a |
| 275 | """, |
| 276 | |
| 277 | """def foo(): |
| 278 | async def bar(): |
| 279 | pass\nawait a |
| 280 | """] |
| 281 | |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 282 | for code in samples: |
| 283 | with self.subTest(code=code), self.assertRaises(SyntaxError): |
Yury Selivanov | b7666a3 | 2015-07-22 14:48:57 +0300 | [diff] [blame] | 284 | compile(code, "<test>", "exec") |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 285 | |
| 286 | def test_goodsyntax_1(self): |
| 287 | # Tests for issue 24619 |
| 288 | |
| 289 | def foo(await): |
| 290 | async def foo(): pass |
| 291 | async def foo(): |
| 292 | pass |
| 293 | return await + 1 |
| 294 | self.assertEqual(foo(10), 11) |
| 295 | |
| 296 | def foo(await): |
| 297 | async def foo(): pass |
| 298 | async def foo(): pass |
| 299 | return await + 2 |
| 300 | self.assertEqual(foo(20), 22) |
| 301 | |
| 302 | def foo(await): |
| 303 | |
| 304 | async def foo(): pass |
| 305 | |
| 306 | async def foo(): pass |
| 307 | |
| 308 | return await + 2 |
| 309 | self.assertEqual(foo(20), 22) |
| 310 | |
| 311 | def foo(await): |
| 312 | """spam""" |
| 313 | async def foo(): \ |
| 314 | pass |
| 315 | # 123 |
| 316 | async def foo(): pass |
| 317 | # 456 |
| 318 | return await + 2 |
| 319 | self.assertEqual(foo(20), 22) |
| 320 | |
| 321 | def foo(await): |
| 322 | def foo(): pass |
| 323 | def foo(): pass |
| 324 | async def bar(): return await_ |
| 325 | await_ = await |
| 326 | try: |
| 327 | bar().send(None) |
| 328 | except StopIteration as ex: |
| 329 | return ex.args[0] |
| 330 | self.assertEqual(foo(42), 42) |
| 331 | |
| 332 | async def f(): |
| 333 | async def g(): pass |
| 334 | await z |
Yury Selivanov | 96ec934 | 2015-07-23 15:01:58 +0300 | [diff] [blame] | 335 | await = 1 |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 336 | self.assertTrue(inspect.iscoroutinefunction(f)) |
| 337 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 338 | |
Yury Selivanov | 8085b80 | 2015-05-18 12:50:52 -0400 | [diff] [blame] | 339 | class TokenizerRegrTest(unittest.TestCase): |
| 340 | |
| 341 | def test_oneline_defs(self): |
| 342 | buf = [] |
| 343 | for i in range(500): |
| 344 | buf.append('def i{i}(): return {i}'.format(i=i)) |
| 345 | buf = '\n'.join(buf) |
| 346 | |
| 347 | # Test that 500 consequent, one-line defs is OK |
| 348 | ns = {} |
| 349 | exec(buf, ns, ns) |
| 350 | self.assertEqual(ns['i499'](), 499) |
| 351 | |
| 352 | # Test that 500 consequent, one-line defs *and* |
| 353 | # one 'async def' following them is OK |
| 354 | buf += '\nasync def foo():\n return' |
| 355 | ns = {} |
| 356 | exec(buf, ns, ns) |
| 357 | self.assertEqual(ns['i499'](), 499) |
| 358 | self.assertTrue(inspect.iscoroutinefunction(ns['foo'])) |
| 359 | |
| 360 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 361 | class CoroutineTest(unittest.TestCase): |
| 362 | |
| 363 | def test_gen_1(self): |
| 364 | def gen(): yield |
| 365 | self.assertFalse(hasattr(gen, '__await__')) |
| 366 | |
| 367 | def test_func_1(self): |
| 368 | async def foo(): |
| 369 | return 10 |
| 370 | |
| 371 | f = foo() |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 372 | self.assertIsInstance(f, types.CoroutineType) |
| 373 | self.assertTrue(bool(foo.__code__.co_flags & inspect.CO_COROUTINE)) |
| 374 | self.assertFalse(bool(foo.__code__.co_flags & inspect.CO_GENERATOR)) |
| 375 | self.assertTrue(bool(f.cr_code.co_flags & inspect.CO_COROUTINE)) |
| 376 | self.assertFalse(bool(f.cr_code.co_flags & inspect.CO_GENERATOR)) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 377 | self.assertEqual(run_async(f), ([], 10)) |
| 378 | |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 379 | self.assertEqual(run_async__await__(foo()), ([], 10)) |
| 380 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 381 | def bar(): pass |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 382 | self.assertFalse(bool(bar.__code__.co_flags & inspect.CO_COROUTINE)) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 383 | |
| 384 | def test_func_2(self): |
| 385 | async def foo(): |
| 386 | raise StopIteration |
| 387 | |
| 388 | with self.assertRaisesRegex( |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 389 | RuntimeError, "coroutine raised StopIteration"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 390 | |
| 391 | run_async(foo()) |
| 392 | |
| 393 | def test_func_3(self): |
| 394 | async def foo(): |
| 395 | raise StopIteration |
| 396 | |
| 397 | with silence_coro_gc(): |
| 398 | self.assertRegex(repr(foo()), '^<coroutine object.* at 0x.*>$') |
| 399 | |
| 400 | def test_func_4(self): |
| 401 | async def foo(): |
| 402 | raise StopIteration |
| 403 | |
| 404 | check = lambda: self.assertRaisesRegex( |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 405 | TypeError, "'coroutine' object is not iterable") |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 406 | |
| 407 | with check(): |
| 408 | list(foo()) |
| 409 | |
| 410 | with check(): |
| 411 | tuple(foo()) |
| 412 | |
| 413 | with check(): |
| 414 | sum(foo()) |
| 415 | |
| 416 | with check(): |
| 417 | iter(foo()) |
| 418 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 419 | with silence_coro_gc(), check(): |
| 420 | for i in foo(): |
| 421 | pass |
| 422 | |
| 423 | with silence_coro_gc(), check(): |
| 424 | [i for i in foo()] |
| 425 | |
| 426 | def test_func_5(self): |
| 427 | @types.coroutine |
| 428 | def bar(): |
| 429 | yield 1 |
| 430 | |
| 431 | async def foo(): |
| 432 | await bar() |
| 433 | |
| 434 | check = lambda: self.assertRaisesRegex( |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 435 | TypeError, "'coroutine' object is not iterable") |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 436 | |
| 437 | with check(): |
| 438 | for el in foo(): pass |
| 439 | |
| 440 | # the following should pass without an error |
| 441 | for el in bar(): |
| 442 | self.assertEqual(el, 1) |
| 443 | self.assertEqual([el for el in bar()], [1]) |
| 444 | self.assertEqual(tuple(bar()), (1,)) |
| 445 | self.assertEqual(next(iter(bar())), 1) |
| 446 | |
| 447 | def test_func_6(self): |
| 448 | @types.coroutine |
| 449 | def bar(): |
| 450 | yield 1 |
| 451 | yield 2 |
| 452 | |
| 453 | async def foo(): |
| 454 | await bar() |
| 455 | |
| 456 | f = foo() |
Zachary Ware | 37ac590 | 2015-05-13 01:03:06 -0500 | [diff] [blame] | 457 | self.assertEqual(f.send(None), 1) |
| 458 | self.assertEqual(f.send(None), 2) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 459 | with self.assertRaises(StopIteration): |
| 460 | f.send(None) |
| 461 | |
| 462 | def test_func_7(self): |
| 463 | async def bar(): |
| 464 | return 10 |
| 465 | |
| 466 | def foo(): |
| 467 | yield from bar() |
| 468 | |
| 469 | with silence_coro_gc(), self.assertRaisesRegex( |
| 470 | TypeError, |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 471 | "cannot 'yield from' a coroutine object in a non-coroutine generator"): |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 472 | |
| 473 | list(foo()) |
| 474 | |
| 475 | def test_func_8(self): |
| 476 | @types.coroutine |
| 477 | def bar(): |
| 478 | return (yield from foo()) |
| 479 | |
| 480 | async def foo(): |
| 481 | return 'spam' |
| 482 | |
| 483 | self.assertEqual(run_async(bar()), ([], 'spam') ) |
| 484 | |
| 485 | def test_func_9(self): |
| 486 | async def foo(): pass |
| 487 | |
| 488 | with self.assertWarnsRegex( |
| 489 | RuntimeWarning, "coroutine '.*test_func_9.*foo' was never awaited"): |
| 490 | |
| 491 | foo() |
| 492 | support.gc_collect() |
| 493 | |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 494 | def test_func_10(self): |
| 495 | N = 0 |
| 496 | |
| 497 | @types.coroutine |
| 498 | def gen(): |
| 499 | nonlocal N |
| 500 | try: |
| 501 | a = yield |
| 502 | yield (a ** 2) |
| 503 | except ZeroDivisionError: |
| 504 | N += 100 |
| 505 | raise |
| 506 | finally: |
| 507 | N += 1 |
| 508 | |
| 509 | async def foo(): |
| 510 | await gen() |
| 511 | |
| 512 | coro = foo() |
| 513 | aw = coro.__await__() |
| 514 | self.assertIs(aw, iter(aw)) |
| 515 | next(aw) |
| 516 | self.assertEqual(aw.send(10), 100) |
| 517 | |
| 518 | self.assertEqual(N, 0) |
| 519 | aw.close() |
| 520 | self.assertEqual(N, 1) |
| 521 | |
| 522 | coro = foo() |
| 523 | aw = coro.__await__() |
| 524 | next(aw) |
| 525 | with self.assertRaises(ZeroDivisionError): |
| 526 | aw.throw(ZeroDivisionError, None, None) |
| 527 | self.assertEqual(N, 102) |
| 528 | |
| 529 | def test_func_11(self): |
| 530 | async def func(): pass |
| 531 | coro = func() |
| 532 | # Test that PyCoro_Type and _PyCoroWrapper_Type types were properly |
| 533 | # initialized |
| 534 | self.assertIn('__await__', dir(coro)) |
| 535 | self.assertIn('__iter__', dir(coro.__await__())) |
| 536 | self.assertIn('coroutine_wrapper', repr(coro.__await__())) |
| 537 | coro.close() # avoid RuntimeWarning |
| 538 | |
| 539 | def test_func_12(self): |
| 540 | async def g(): |
| 541 | i = me.send(None) |
| 542 | await foo |
| 543 | me = g() |
| 544 | with self.assertRaisesRegex(ValueError, |
| 545 | "coroutine already executing"): |
| 546 | me.send(None) |
| 547 | |
| 548 | def test_func_13(self): |
| 549 | async def g(): |
| 550 | pass |
| 551 | with self.assertRaisesRegex( |
| 552 | TypeError, |
| 553 | "can't send non-None value to a just-started coroutine"): |
| 554 | |
| 555 | g().send('spam') |
| 556 | |
| 557 | def test_func_14(self): |
| 558 | @types.coroutine |
| 559 | def gen(): |
| 560 | yield |
| 561 | async def coro(): |
| 562 | try: |
| 563 | await gen() |
| 564 | except GeneratorExit: |
| 565 | await gen() |
| 566 | c = coro() |
| 567 | c.send(None) |
| 568 | with self.assertRaisesRegex(RuntimeError, |
| 569 | "coroutine ignored GeneratorExit"): |
| 570 | c.close() |
| 571 | |
Yury Selivanov | e13f8f3 | 2015-07-03 00:23:30 -0400 | [diff] [blame] | 572 | def test_cr_await(self): |
| 573 | @types.coroutine |
| 574 | def a(): |
| 575 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_RUNNING) |
| 576 | self.assertIsNone(coro_b.cr_await) |
| 577 | yield |
| 578 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_RUNNING) |
| 579 | self.assertIsNone(coro_b.cr_await) |
| 580 | |
| 581 | async def c(): |
| 582 | await a() |
| 583 | |
| 584 | async def b(): |
| 585 | self.assertIsNone(coro_b.cr_await) |
| 586 | await c() |
| 587 | self.assertIsNone(coro_b.cr_await) |
| 588 | |
| 589 | coro_b = b() |
| 590 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_CREATED) |
| 591 | self.assertIsNone(coro_b.cr_await) |
| 592 | |
| 593 | coro_b.send(None) |
| 594 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_SUSPENDED) |
| 595 | self.assertEqual(coro_b.cr_await.cr_await.gi_code.co_name, 'a') |
| 596 | |
| 597 | with self.assertRaises(StopIteration): |
| 598 | coro_b.send(None) # complete coroutine |
| 599 | self.assertEqual(inspect.getcoroutinestate(coro_b), inspect.CORO_CLOSED) |
| 600 | self.assertIsNone(coro_b.cr_await) |
| 601 | |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 602 | def test_corotype_1(self): |
| 603 | ct = types.CoroutineType |
| 604 | self.assertIn('into coroutine', ct.send.__doc__) |
| 605 | self.assertIn('inside coroutine', ct.close.__doc__) |
| 606 | self.assertIn('in coroutine', ct.throw.__doc__) |
| 607 | self.assertIn('of the coroutine', ct.__dict__['__name__'].__doc__) |
| 608 | self.assertIn('of the coroutine', ct.__dict__['__qualname__'].__doc__) |
| 609 | self.assertEqual(ct.__name__, 'coroutine') |
| 610 | |
| 611 | async def f(): pass |
| 612 | c = f() |
| 613 | self.assertIn('coroutine object', repr(c)) |
| 614 | c.close() |
| 615 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 616 | def test_await_1(self): |
| 617 | |
| 618 | async def foo(): |
| 619 | await 1 |
| 620 | with self.assertRaisesRegex(TypeError, "object int can.t.*await"): |
| 621 | run_async(foo()) |
| 622 | |
| 623 | def test_await_2(self): |
| 624 | async def foo(): |
| 625 | await [] |
| 626 | with self.assertRaisesRegex(TypeError, "object list can.t.*await"): |
| 627 | run_async(foo()) |
| 628 | |
| 629 | def test_await_3(self): |
| 630 | async def foo(): |
| 631 | await AsyncYieldFrom([1, 2, 3]) |
| 632 | |
| 633 | self.assertEqual(run_async(foo()), ([1, 2, 3], None)) |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 634 | self.assertEqual(run_async__await__(foo()), ([1, 2, 3], None)) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 635 | |
| 636 | def test_await_4(self): |
| 637 | async def bar(): |
| 638 | return 42 |
| 639 | |
| 640 | async def foo(): |
| 641 | return await bar() |
| 642 | |
| 643 | self.assertEqual(run_async(foo()), ([], 42)) |
| 644 | |
| 645 | def test_await_5(self): |
| 646 | class Awaitable: |
| 647 | def __await__(self): |
| 648 | return |
| 649 | |
| 650 | async def foo(): |
| 651 | return (await Awaitable()) |
| 652 | |
| 653 | with self.assertRaisesRegex( |
| 654 | TypeError, "__await__.*returned non-iterator of type"): |
| 655 | |
| 656 | run_async(foo()) |
| 657 | |
| 658 | def test_await_6(self): |
| 659 | class Awaitable: |
| 660 | def __await__(self): |
| 661 | return iter([52]) |
| 662 | |
| 663 | async def foo(): |
| 664 | return (await Awaitable()) |
| 665 | |
| 666 | self.assertEqual(run_async(foo()), ([52], None)) |
| 667 | |
| 668 | def test_await_7(self): |
| 669 | class Awaitable: |
| 670 | def __await__(self): |
| 671 | yield 42 |
| 672 | return 100 |
| 673 | |
| 674 | async def foo(): |
| 675 | return (await Awaitable()) |
| 676 | |
| 677 | self.assertEqual(run_async(foo()), ([42], 100)) |
| 678 | |
| 679 | def test_await_8(self): |
| 680 | class Awaitable: |
| 681 | pass |
| 682 | |
Yury Selivanov | 8fb307c | 2015-07-22 13:33:45 +0300 | [diff] [blame] | 683 | async def foo(): return await Awaitable() |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 684 | |
| 685 | with self.assertRaisesRegex( |
| 686 | TypeError, "object Awaitable can't be used in 'await' expression"): |
| 687 | |
| 688 | run_async(foo()) |
| 689 | |
| 690 | def test_await_9(self): |
| 691 | def wrap(): |
| 692 | return bar |
| 693 | |
| 694 | async def bar(): |
| 695 | return 42 |
| 696 | |
| 697 | async def foo(): |
| 698 | b = bar() |
| 699 | |
| 700 | db = {'b': lambda: wrap} |
| 701 | |
| 702 | class DB: |
| 703 | b = wrap |
| 704 | |
| 705 | return (await bar() + await wrap()() + await db['b']()()() + |
| 706 | await bar() * 1000 + await DB.b()()) |
| 707 | |
| 708 | async def foo2(): |
| 709 | return -await bar() |
| 710 | |
| 711 | self.assertEqual(run_async(foo()), ([], 42168)) |
| 712 | self.assertEqual(run_async(foo2()), ([], -42)) |
| 713 | |
| 714 | def test_await_10(self): |
| 715 | async def baz(): |
| 716 | return 42 |
| 717 | |
| 718 | async def bar(): |
| 719 | return baz() |
| 720 | |
| 721 | async def foo(): |
| 722 | return await (await bar()) |
| 723 | |
| 724 | self.assertEqual(run_async(foo()), ([], 42)) |
| 725 | |
| 726 | def test_await_11(self): |
| 727 | def ident(val): |
| 728 | return val |
| 729 | |
| 730 | async def bar(): |
| 731 | return 'spam' |
| 732 | |
| 733 | async def foo(): |
| 734 | return ident(val=await bar()) |
| 735 | |
| 736 | async def foo2(): |
| 737 | return await bar(), 'ham' |
| 738 | |
| 739 | self.assertEqual(run_async(foo2()), ([], ('spam', 'ham'))) |
| 740 | |
| 741 | def test_await_12(self): |
| 742 | async def coro(): |
| 743 | return 'spam' |
| 744 | |
| 745 | class Awaitable: |
| 746 | def __await__(self): |
| 747 | return coro() |
| 748 | |
| 749 | async def foo(): |
| 750 | return await Awaitable() |
| 751 | |
| 752 | with self.assertRaisesRegex( |
| 753 | TypeError, "__await__\(\) returned a coroutine"): |
| 754 | |
| 755 | run_async(foo()) |
| 756 | |
| 757 | def test_await_13(self): |
| 758 | class Awaitable: |
| 759 | def __await__(self): |
| 760 | return self |
| 761 | |
| 762 | async def foo(): |
| 763 | return await Awaitable() |
| 764 | |
| 765 | with self.assertRaisesRegex( |
| 766 | TypeError, "__await__.*returned non-iterator of type"): |
| 767 | |
| 768 | run_async(foo()) |
| 769 | |
Yury Selivanov | f270152 | 2015-07-01 12:29:55 -0400 | [diff] [blame] | 770 | def test_await_14(self): |
| 771 | class Wrapper: |
| 772 | # Forces the interpreter to use CoroutineType.__await__ |
| 773 | def __init__(self, coro): |
| 774 | assert coro.__class__ is types.CoroutineType |
| 775 | self.coro = coro |
| 776 | def __await__(self): |
| 777 | return self.coro.__await__() |
| 778 | |
| 779 | class FutureLike: |
| 780 | def __await__(self): |
| 781 | return (yield) |
| 782 | |
| 783 | class Marker(Exception): |
| 784 | pass |
| 785 | |
| 786 | async def coro1(): |
| 787 | try: |
| 788 | return await FutureLike() |
| 789 | except ZeroDivisionError: |
| 790 | raise Marker |
| 791 | async def coro2(): |
| 792 | return await Wrapper(coro1()) |
| 793 | |
| 794 | c = coro2() |
| 795 | c.send(None) |
| 796 | with self.assertRaisesRegex(StopIteration, 'spam'): |
| 797 | c.send('spam') |
| 798 | |
| 799 | c = coro2() |
| 800 | c.send(None) |
| 801 | with self.assertRaises(Marker): |
| 802 | c.throw(ZeroDivisionError) |
| 803 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 804 | def test_with_1(self): |
| 805 | class Manager: |
| 806 | def __init__(self, name): |
| 807 | self.name = name |
| 808 | |
| 809 | async def __aenter__(self): |
| 810 | await AsyncYieldFrom(['enter-1-' + self.name, |
| 811 | 'enter-2-' + self.name]) |
| 812 | return self |
| 813 | |
| 814 | async def __aexit__(self, *args): |
| 815 | await AsyncYieldFrom(['exit-1-' + self.name, |
| 816 | 'exit-2-' + self.name]) |
| 817 | |
| 818 | if self.name == 'B': |
| 819 | return True |
| 820 | |
| 821 | |
| 822 | async def foo(): |
| 823 | async with Manager("A") as a, Manager("B") as b: |
| 824 | await AsyncYieldFrom([('managers', a.name, b.name)]) |
| 825 | 1/0 |
| 826 | |
| 827 | f = foo() |
| 828 | result, _ = run_async(f) |
| 829 | |
| 830 | self.assertEqual( |
| 831 | result, ['enter-1-A', 'enter-2-A', 'enter-1-B', 'enter-2-B', |
| 832 | ('managers', 'A', 'B'), |
| 833 | 'exit-1-B', 'exit-2-B', 'exit-1-A', 'exit-2-A'] |
| 834 | ) |
| 835 | |
| 836 | async def foo(): |
| 837 | async with Manager("A") as a, Manager("C") as c: |
| 838 | await AsyncYieldFrom([('managers', a.name, c.name)]) |
| 839 | 1/0 |
| 840 | |
| 841 | with self.assertRaises(ZeroDivisionError): |
| 842 | run_async(foo()) |
| 843 | |
| 844 | def test_with_2(self): |
| 845 | class CM: |
| 846 | def __aenter__(self): |
| 847 | pass |
| 848 | |
| 849 | async def foo(): |
| 850 | async with CM(): |
| 851 | pass |
| 852 | |
| 853 | with self.assertRaisesRegex(AttributeError, '__aexit__'): |
| 854 | run_async(foo()) |
| 855 | |
| 856 | def test_with_3(self): |
| 857 | class CM: |
| 858 | def __aexit__(self): |
| 859 | pass |
| 860 | |
| 861 | async def foo(): |
| 862 | async with CM(): |
| 863 | pass |
| 864 | |
| 865 | with self.assertRaisesRegex(AttributeError, '__aenter__'): |
| 866 | run_async(foo()) |
| 867 | |
| 868 | def test_with_4(self): |
| 869 | class CM: |
| 870 | def __enter__(self): |
| 871 | pass |
| 872 | |
| 873 | def __exit__(self): |
| 874 | pass |
| 875 | |
| 876 | async def foo(): |
| 877 | async with CM(): |
| 878 | pass |
| 879 | |
| 880 | with self.assertRaisesRegex(AttributeError, '__aexit__'): |
| 881 | run_async(foo()) |
| 882 | |
| 883 | def test_with_5(self): |
| 884 | # While this test doesn't make a lot of sense, |
| 885 | # it's a regression test for an early bug with opcodes |
| 886 | # generation |
| 887 | |
| 888 | class CM: |
| 889 | async def __aenter__(self): |
| 890 | return self |
| 891 | |
| 892 | async def __aexit__(self, *exc): |
| 893 | pass |
| 894 | |
| 895 | async def func(): |
| 896 | async with CM(): |
| 897 | assert (1, ) == 1 |
| 898 | |
| 899 | with self.assertRaises(AssertionError): |
| 900 | run_async(func()) |
| 901 | |
| 902 | def test_with_6(self): |
| 903 | class CM: |
| 904 | def __aenter__(self): |
| 905 | return 123 |
| 906 | |
| 907 | def __aexit__(self, *e): |
| 908 | return 456 |
| 909 | |
| 910 | async def foo(): |
| 911 | async with CM(): |
| 912 | pass |
| 913 | |
| 914 | with self.assertRaisesRegex( |
| 915 | TypeError, "object int can't be used in 'await' expression"): |
| 916 | # it's important that __aexit__ wasn't called |
| 917 | run_async(foo()) |
| 918 | |
| 919 | def test_with_7(self): |
| 920 | class CM: |
| 921 | async def __aenter__(self): |
| 922 | return self |
| 923 | |
| 924 | def __aexit__(self, *e): |
Nick Coghlan | baaadbf | 2015-05-13 15:54:02 +1000 | [diff] [blame] | 925 | return 444 |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 926 | |
| 927 | async def foo(): |
| 928 | async with CM(): |
Nick Coghlan | baaadbf | 2015-05-13 15:54:02 +1000 | [diff] [blame] | 929 | 1/0 |
| 930 | |
| 931 | try: |
| 932 | run_async(foo()) |
| 933 | except TypeError as exc: |
| 934 | self.assertRegex( |
| 935 | exc.args[0], "object int can't be used in 'await' expression") |
| 936 | self.assertTrue(exc.__context__ is not None) |
| 937 | self.assertTrue(isinstance(exc.__context__, ZeroDivisionError)) |
| 938 | else: |
| 939 | self.fail('invalid asynchronous context manager did not fail') |
| 940 | |
| 941 | |
| 942 | def test_with_8(self): |
| 943 | CNT = 0 |
| 944 | |
| 945 | class CM: |
| 946 | async def __aenter__(self): |
| 947 | return self |
| 948 | |
| 949 | def __aexit__(self, *e): |
| 950 | return 456 |
| 951 | |
| 952 | async def foo(): |
| 953 | nonlocal CNT |
| 954 | async with CM(): |
| 955 | CNT += 1 |
| 956 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 957 | |
| 958 | with self.assertRaisesRegex( |
| 959 | TypeError, "object int can't be used in 'await' expression"): |
| 960 | |
| 961 | run_async(foo()) |
| 962 | |
Nick Coghlan | baaadbf | 2015-05-13 15:54:02 +1000 | [diff] [blame] | 963 | self.assertEqual(CNT, 1) |
| 964 | |
| 965 | |
| 966 | def test_with_9(self): |
| 967 | CNT = 0 |
| 968 | |
| 969 | class CM: |
| 970 | async def __aenter__(self): |
| 971 | return self |
| 972 | |
| 973 | async def __aexit__(self, *e): |
| 974 | 1/0 |
| 975 | |
| 976 | async def foo(): |
| 977 | nonlocal CNT |
| 978 | async with CM(): |
| 979 | CNT += 1 |
| 980 | |
| 981 | with self.assertRaises(ZeroDivisionError): |
| 982 | run_async(foo()) |
| 983 | |
| 984 | self.assertEqual(CNT, 1) |
| 985 | |
| 986 | def test_with_10(self): |
| 987 | CNT = 0 |
| 988 | |
| 989 | class CM: |
| 990 | async def __aenter__(self): |
| 991 | return self |
| 992 | |
| 993 | async def __aexit__(self, *e): |
| 994 | 1/0 |
| 995 | |
| 996 | async def foo(): |
| 997 | nonlocal CNT |
| 998 | async with CM(): |
| 999 | async with CM(): |
| 1000 | raise RuntimeError |
| 1001 | |
| 1002 | try: |
| 1003 | run_async(foo()) |
| 1004 | except ZeroDivisionError as exc: |
| 1005 | self.assertTrue(exc.__context__ is not None) |
| 1006 | self.assertTrue(isinstance(exc.__context__, ZeroDivisionError)) |
| 1007 | self.assertTrue(isinstance(exc.__context__.__context__, |
| 1008 | RuntimeError)) |
| 1009 | else: |
| 1010 | self.fail('exception from __aexit__ did not propagate') |
| 1011 | |
| 1012 | def test_with_11(self): |
| 1013 | CNT = 0 |
| 1014 | |
| 1015 | class CM: |
| 1016 | async def __aenter__(self): |
| 1017 | raise NotImplementedError |
| 1018 | |
| 1019 | async def __aexit__(self, *e): |
| 1020 | 1/0 |
| 1021 | |
| 1022 | async def foo(): |
| 1023 | nonlocal CNT |
| 1024 | async with CM(): |
| 1025 | raise RuntimeError |
| 1026 | |
| 1027 | try: |
| 1028 | run_async(foo()) |
| 1029 | except NotImplementedError as exc: |
| 1030 | self.assertTrue(exc.__context__ is None) |
| 1031 | else: |
| 1032 | self.fail('exception from __aenter__ did not propagate') |
| 1033 | |
| 1034 | def test_with_12(self): |
| 1035 | CNT = 0 |
| 1036 | |
| 1037 | class CM: |
| 1038 | async def __aenter__(self): |
| 1039 | return self |
| 1040 | |
| 1041 | async def __aexit__(self, *e): |
| 1042 | return True |
| 1043 | |
| 1044 | async def foo(): |
| 1045 | nonlocal CNT |
| 1046 | async with CM() as cm: |
| 1047 | self.assertIs(cm.__class__, CM) |
| 1048 | raise RuntimeError |
| 1049 | |
| 1050 | run_async(foo()) |
| 1051 | |
Yury Selivanov | 9113dc7 | 2015-05-13 16:49:35 -0400 | [diff] [blame] | 1052 | def test_with_13(self): |
| 1053 | CNT = 0 |
| 1054 | |
| 1055 | class CM: |
| 1056 | async def __aenter__(self): |
| 1057 | 1/0 |
| 1058 | |
| 1059 | async def __aexit__(self, *e): |
| 1060 | return True |
| 1061 | |
| 1062 | async def foo(): |
| 1063 | nonlocal CNT |
| 1064 | CNT += 1 |
| 1065 | async with CM(): |
| 1066 | CNT += 1000 |
| 1067 | CNT += 10000 |
| 1068 | |
| 1069 | with self.assertRaises(ZeroDivisionError): |
| 1070 | run_async(foo()) |
| 1071 | self.assertEqual(CNT, 1) |
| 1072 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1073 | def test_for_1(self): |
| 1074 | aiter_calls = 0 |
| 1075 | |
| 1076 | class AsyncIter: |
| 1077 | def __init__(self): |
| 1078 | self.i = 0 |
| 1079 | |
| 1080 | async def __aiter__(self): |
| 1081 | nonlocal aiter_calls |
| 1082 | aiter_calls += 1 |
| 1083 | return self |
| 1084 | |
| 1085 | async def __anext__(self): |
| 1086 | self.i += 1 |
| 1087 | |
| 1088 | if not (self.i % 10): |
| 1089 | await AsyncYield(self.i * 10) |
| 1090 | |
| 1091 | if self.i > 100: |
| 1092 | raise StopAsyncIteration |
| 1093 | |
| 1094 | return self.i, self.i |
| 1095 | |
| 1096 | |
| 1097 | buffer = [] |
| 1098 | async def test1(): |
| 1099 | async for i1, i2 in AsyncIter(): |
| 1100 | buffer.append(i1 + i2) |
| 1101 | |
| 1102 | yielded, _ = run_async(test1()) |
| 1103 | # Make sure that __aiter__ was called only once |
| 1104 | self.assertEqual(aiter_calls, 1) |
| 1105 | self.assertEqual(yielded, [i * 100 for i in range(1, 11)]) |
| 1106 | self.assertEqual(buffer, [i*2 for i in range(1, 101)]) |
| 1107 | |
| 1108 | |
| 1109 | buffer = [] |
| 1110 | async def test2(): |
| 1111 | nonlocal buffer |
| 1112 | async for i in AsyncIter(): |
| 1113 | buffer.append(i[0]) |
| 1114 | if i[0] == 20: |
| 1115 | break |
| 1116 | else: |
| 1117 | buffer.append('what?') |
| 1118 | buffer.append('end') |
| 1119 | |
| 1120 | yielded, _ = run_async(test2()) |
| 1121 | # Make sure that __aiter__ was called only once |
| 1122 | self.assertEqual(aiter_calls, 2) |
| 1123 | self.assertEqual(yielded, [100, 200]) |
| 1124 | self.assertEqual(buffer, [i for i in range(1, 21)] + ['end']) |
| 1125 | |
| 1126 | |
| 1127 | buffer = [] |
| 1128 | async def test3(): |
| 1129 | nonlocal buffer |
| 1130 | async for i in AsyncIter(): |
| 1131 | if i[0] > 20: |
| 1132 | continue |
| 1133 | buffer.append(i[0]) |
| 1134 | else: |
| 1135 | buffer.append('what?') |
| 1136 | buffer.append('end') |
| 1137 | |
| 1138 | yielded, _ = run_async(test3()) |
| 1139 | # Make sure that __aiter__ was called only once |
| 1140 | self.assertEqual(aiter_calls, 3) |
| 1141 | self.assertEqual(yielded, [i * 100 for i in range(1, 11)]) |
| 1142 | self.assertEqual(buffer, [i for i in range(1, 21)] + |
| 1143 | ['what?', 'end']) |
| 1144 | |
| 1145 | def test_for_2(self): |
| 1146 | tup = (1, 2, 3) |
| 1147 | refs_before = sys.getrefcount(tup) |
| 1148 | |
| 1149 | async def foo(): |
| 1150 | async for i in tup: |
| 1151 | print('never going to happen') |
| 1152 | |
| 1153 | with self.assertRaisesRegex( |
| 1154 | TypeError, "async for' requires an object.*__aiter__.*tuple"): |
| 1155 | |
| 1156 | run_async(foo()) |
| 1157 | |
| 1158 | self.assertEqual(sys.getrefcount(tup), refs_before) |
| 1159 | |
| 1160 | def test_for_3(self): |
| 1161 | class I: |
| 1162 | def __aiter__(self): |
| 1163 | return self |
| 1164 | |
| 1165 | aiter = I() |
| 1166 | refs_before = sys.getrefcount(aiter) |
| 1167 | |
| 1168 | async def foo(): |
| 1169 | async for i in aiter: |
| 1170 | print('never going to happen') |
| 1171 | |
| 1172 | with self.assertRaisesRegex( |
| 1173 | TypeError, |
| 1174 | "async for' received an invalid object.*__aiter.*\: I"): |
| 1175 | |
| 1176 | run_async(foo()) |
| 1177 | |
| 1178 | self.assertEqual(sys.getrefcount(aiter), refs_before) |
| 1179 | |
| 1180 | def test_for_4(self): |
| 1181 | class I: |
| 1182 | async def __aiter__(self): |
| 1183 | return self |
| 1184 | |
| 1185 | def __anext__(self): |
| 1186 | return () |
| 1187 | |
| 1188 | aiter = I() |
| 1189 | refs_before = sys.getrefcount(aiter) |
| 1190 | |
| 1191 | async def foo(): |
| 1192 | async for i in aiter: |
| 1193 | print('never going to happen') |
| 1194 | |
| 1195 | with self.assertRaisesRegex( |
| 1196 | TypeError, |
| 1197 | "async for' received an invalid object.*__anext__.*tuple"): |
| 1198 | |
| 1199 | run_async(foo()) |
| 1200 | |
| 1201 | self.assertEqual(sys.getrefcount(aiter), refs_before) |
| 1202 | |
| 1203 | def test_for_5(self): |
| 1204 | class I: |
| 1205 | async def __aiter__(self): |
| 1206 | return self |
| 1207 | |
| 1208 | def __anext__(self): |
| 1209 | return 123 |
| 1210 | |
| 1211 | async def foo(): |
| 1212 | async for i in I(): |
| 1213 | print('never going to happen') |
| 1214 | |
| 1215 | with self.assertRaisesRegex( |
| 1216 | TypeError, |
| 1217 | "async for' received an invalid object.*__anext.*int"): |
| 1218 | |
| 1219 | run_async(foo()) |
| 1220 | |
| 1221 | def test_for_6(self): |
| 1222 | I = 0 |
| 1223 | |
| 1224 | class Manager: |
| 1225 | async def __aenter__(self): |
| 1226 | nonlocal I |
| 1227 | I += 10000 |
| 1228 | |
| 1229 | async def __aexit__(self, *args): |
| 1230 | nonlocal I |
| 1231 | I += 100000 |
| 1232 | |
| 1233 | class Iterable: |
| 1234 | def __init__(self): |
| 1235 | self.i = 0 |
| 1236 | |
| 1237 | async def __aiter__(self): |
| 1238 | return self |
| 1239 | |
| 1240 | async def __anext__(self): |
| 1241 | if self.i > 10: |
| 1242 | raise StopAsyncIteration |
| 1243 | self.i += 1 |
| 1244 | return self.i |
| 1245 | |
| 1246 | ############## |
| 1247 | |
| 1248 | manager = Manager() |
| 1249 | iterable = Iterable() |
| 1250 | mrefs_before = sys.getrefcount(manager) |
| 1251 | irefs_before = sys.getrefcount(iterable) |
| 1252 | |
| 1253 | async def main(): |
| 1254 | nonlocal I |
| 1255 | |
| 1256 | async with manager: |
| 1257 | async for i in iterable: |
| 1258 | I += 1 |
| 1259 | I += 1000 |
| 1260 | |
| 1261 | run_async(main()) |
| 1262 | self.assertEqual(I, 111011) |
| 1263 | |
| 1264 | self.assertEqual(sys.getrefcount(manager), mrefs_before) |
| 1265 | self.assertEqual(sys.getrefcount(iterable), irefs_before) |
| 1266 | |
| 1267 | ############## |
| 1268 | |
| 1269 | async def main(): |
| 1270 | nonlocal I |
| 1271 | |
| 1272 | async with Manager(): |
| 1273 | async for i in Iterable(): |
| 1274 | I += 1 |
| 1275 | I += 1000 |
| 1276 | |
| 1277 | async with Manager(): |
| 1278 | async for i in Iterable(): |
| 1279 | I += 1 |
| 1280 | I += 1000 |
| 1281 | |
| 1282 | run_async(main()) |
| 1283 | self.assertEqual(I, 333033) |
| 1284 | |
| 1285 | ############## |
| 1286 | |
| 1287 | async def main(): |
| 1288 | nonlocal I |
| 1289 | |
| 1290 | async with Manager(): |
| 1291 | I += 100 |
| 1292 | async for i in Iterable(): |
| 1293 | I += 1 |
| 1294 | else: |
| 1295 | I += 10000000 |
| 1296 | I += 1000 |
| 1297 | |
| 1298 | async with Manager(): |
| 1299 | I += 100 |
| 1300 | async for i in Iterable(): |
| 1301 | I += 1 |
| 1302 | else: |
| 1303 | I += 10000000 |
| 1304 | I += 1000 |
| 1305 | |
| 1306 | run_async(main()) |
| 1307 | self.assertEqual(I, 20555255) |
| 1308 | |
Yury Selivanov | 9113dc7 | 2015-05-13 16:49:35 -0400 | [diff] [blame] | 1309 | def test_for_7(self): |
| 1310 | CNT = 0 |
| 1311 | class AI: |
| 1312 | async def __aiter__(self): |
| 1313 | 1/0 |
| 1314 | async def foo(): |
| 1315 | nonlocal CNT |
| 1316 | async for i in AI(): |
| 1317 | CNT += 1 |
| 1318 | CNT += 10 |
| 1319 | with self.assertRaises(ZeroDivisionError): |
| 1320 | run_async(foo()) |
| 1321 | self.assertEqual(CNT, 0) |
| 1322 | |
Serhiy Storchaka | 609a2e1 | 2015-11-12 11:31:51 +0200 | [diff] [blame^] | 1323 | def test_copy(self): |
| 1324 | async def func(): pass |
| 1325 | coro = func() |
| 1326 | with self.assertRaises(TypeError): |
| 1327 | copy.copy(coro) |
| 1328 | |
| 1329 | aw = coro.__await__() |
| 1330 | try: |
| 1331 | with self.assertRaises(TypeError): |
| 1332 | copy.copy(aw) |
| 1333 | finally: |
| 1334 | aw.close() |
| 1335 | |
| 1336 | def test_pickle(self): |
| 1337 | async def func(): pass |
| 1338 | coro = func() |
| 1339 | for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
| 1340 | with self.assertRaises((TypeError, pickle.PicklingError)): |
| 1341 | pickle.dumps(coro, proto) |
| 1342 | |
| 1343 | aw = coro.__await__() |
| 1344 | try: |
| 1345 | for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
| 1346 | with self.assertRaises((TypeError, pickle.PicklingError)): |
| 1347 | pickle.dumps(aw, proto) |
| 1348 | finally: |
| 1349 | aw.close() |
| 1350 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1351 | |
| 1352 | class CoroAsyncIOCompatTest(unittest.TestCase): |
| 1353 | |
| 1354 | def test_asyncio_1(self): |
Victor Stinner | b45c0f7 | 2015-10-11 10:10:31 +0200 | [diff] [blame] | 1355 | # asyncio cannot be imported when Python is compiled without thread |
| 1356 | # support |
Victor Stinner | 718c984 | 2015-10-11 10:53:15 +0200 | [diff] [blame] | 1357 | asyncio = support.import_module('asyncio') |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1358 | |
| 1359 | class MyException(Exception): |
| 1360 | pass |
| 1361 | |
| 1362 | buffer = [] |
| 1363 | |
| 1364 | class CM: |
| 1365 | async def __aenter__(self): |
| 1366 | buffer.append(1) |
| 1367 | await asyncio.sleep(0.01) |
| 1368 | buffer.append(2) |
| 1369 | return self |
| 1370 | |
| 1371 | async def __aexit__(self, exc_type, exc_val, exc_tb): |
| 1372 | await asyncio.sleep(0.01) |
| 1373 | buffer.append(exc_type.__name__) |
| 1374 | |
| 1375 | async def f(): |
| 1376 | async with CM() as c: |
| 1377 | await asyncio.sleep(0.01) |
| 1378 | raise MyException |
| 1379 | buffer.append('unreachable') |
| 1380 | |
Yury Selivanov | fdba838 | 2015-05-12 14:28:08 -0400 | [diff] [blame] | 1381 | loop = asyncio.new_event_loop() |
| 1382 | asyncio.set_event_loop(loop) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1383 | try: |
| 1384 | loop.run_until_complete(f()) |
| 1385 | except MyException: |
| 1386 | pass |
| 1387 | finally: |
| 1388 | loop.close() |
Yury Selivanov | fdba838 | 2015-05-12 14:28:08 -0400 | [diff] [blame] | 1389 | asyncio.set_event_loop(None) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1390 | |
| 1391 | self.assertEqual(buffer, [1, 2, 'MyException']) |
| 1392 | |
| 1393 | |
| 1394 | class SysSetCoroWrapperTest(unittest.TestCase): |
| 1395 | |
| 1396 | def test_set_wrapper_1(self): |
| 1397 | async def foo(): |
| 1398 | return 'spam' |
| 1399 | |
| 1400 | wrapped = None |
| 1401 | def wrap(gen): |
| 1402 | nonlocal wrapped |
| 1403 | wrapped = gen |
| 1404 | return gen |
| 1405 | |
| 1406 | self.assertIsNone(sys.get_coroutine_wrapper()) |
| 1407 | |
| 1408 | sys.set_coroutine_wrapper(wrap) |
| 1409 | self.assertIs(sys.get_coroutine_wrapper(), wrap) |
| 1410 | try: |
| 1411 | f = foo() |
| 1412 | self.assertTrue(wrapped) |
| 1413 | |
| 1414 | self.assertEqual(run_async(f), ([], 'spam')) |
| 1415 | finally: |
| 1416 | sys.set_coroutine_wrapper(None) |
| 1417 | |
| 1418 | self.assertIsNone(sys.get_coroutine_wrapper()) |
| 1419 | |
| 1420 | wrapped = None |
| 1421 | with silence_coro_gc(): |
| 1422 | foo() |
| 1423 | self.assertFalse(wrapped) |
| 1424 | |
| 1425 | def test_set_wrapper_2(self): |
| 1426 | self.assertIsNone(sys.get_coroutine_wrapper()) |
| 1427 | with self.assertRaisesRegex(TypeError, "callable expected, got int"): |
| 1428 | sys.set_coroutine_wrapper(1) |
| 1429 | self.assertIsNone(sys.get_coroutine_wrapper()) |
| 1430 | |
Yury Selivanov | aab3c4a | 2015-06-02 18:43:51 -0400 | [diff] [blame] | 1431 | def test_set_wrapper_3(self): |
| 1432 | async def foo(): |
| 1433 | return 'spam' |
| 1434 | |
| 1435 | def wrapper(coro): |
| 1436 | async def wrap(coro): |
| 1437 | return await coro |
| 1438 | return wrap(coro) |
| 1439 | |
| 1440 | sys.set_coroutine_wrapper(wrapper) |
| 1441 | try: |
Yury Selivanov | 94c2263 | 2015-06-04 10:16:51 -0400 | [diff] [blame] | 1442 | with silence_coro_gc(), self.assertRaisesRegex( |
Yury Selivanov | aab3c4a | 2015-06-02 18:43:51 -0400 | [diff] [blame] | 1443 | RuntimeError, |
| 1444 | "coroutine wrapper.*\.wrapper at 0x.*attempted to " |
Yury Selivanov | 94c2263 | 2015-06-04 10:16:51 -0400 | [diff] [blame] | 1445 | "recursively wrap .* wrap .*"): |
Yury Selivanov | aab3c4a | 2015-06-02 18:43:51 -0400 | [diff] [blame] | 1446 | |
| 1447 | foo() |
| 1448 | finally: |
| 1449 | sys.set_coroutine_wrapper(None) |
| 1450 | |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 1451 | def test_set_wrapper_4(self): |
| 1452 | @types.coroutine |
| 1453 | def foo(): |
| 1454 | return 'spam' |
| 1455 | |
| 1456 | wrapped = None |
| 1457 | def wrap(gen): |
| 1458 | nonlocal wrapped |
| 1459 | wrapped = gen |
| 1460 | return gen |
| 1461 | |
| 1462 | sys.set_coroutine_wrapper(wrap) |
| 1463 | try: |
| 1464 | foo() |
| 1465 | self.assertIs( |
| 1466 | wrapped, None, |
| 1467 | "generator-based coroutine was wrapped via " |
| 1468 | "sys.set_coroutine_wrapper") |
| 1469 | finally: |
| 1470 | sys.set_coroutine_wrapper(None) |
| 1471 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1472 | |
| 1473 | class CAPITest(unittest.TestCase): |
| 1474 | |
| 1475 | def test_tp_await_1(self): |
| 1476 | from _testcapi import awaitType as at |
| 1477 | |
| 1478 | async def foo(): |
| 1479 | future = at(iter([1])) |
| 1480 | return (await future) |
| 1481 | |
| 1482 | self.assertEqual(foo().send(None), 1) |
| 1483 | |
| 1484 | def test_tp_await_2(self): |
| 1485 | # Test tp_await to __await__ mapping |
| 1486 | from _testcapi import awaitType as at |
| 1487 | future = at(iter([1])) |
| 1488 | self.assertEqual(next(future.__await__()), 1) |
| 1489 | |
| 1490 | def test_tp_await_3(self): |
| 1491 | from _testcapi import awaitType as at |
| 1492 | |
| 1493 | async def foo(): |
| 1494 | future = at(1) |
| 1495 | return (await future) |
| 1496 | |
| 1497 | with self.assertRaisesRegex( |
| 1498 | TypeError, "__await__.*returned non-iterator of type 'int'"): |
| 1499 | self.assertEqual(foo().send(None), 1) |
| 1500 | |
| 1501 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1502 | if __name__=="__main__": |
Zachary Ware | 37ac590 | 2015-05-13 01:03:06 -0500 | [diff] [blame] | 1503 | unittest.main() |