(self)
| 366 | cm.reschedule(0.02) |
| 367 | |
| 368 | async def test_timeout_taskgroup(self): |
| 369 | async def task(): |
| 370 | try: |
| 371 | await asyncio.sleep(2) # Will be interrupted after 0.01 second |
| 372 | finally: |
| 373 | 1/0 # Crash in cleanup |
| 374 | |
| 375 | with self.assertRaises(ExceptionGroup) as cm: |
| 376 | async with asyncio.timeout(0.01): |
| 377 | async with asyncio.TaskGroup() as tg: |
| 378 | tg.create_task(task()) |
| 379 | try: |
| 380 | raise ValueError |
| 381 | finally: |
| 382 | await asyncio.sleep(1) |
| 383 | eg = cm.exception |
| 384 | # Expect ExceptionGroup raised during handling of TimeoutError caused |
| 385 | # by CancelledError raised during handling of ValueError. |
| 386 | self.assertIsNone(eg.__cause__) |
| 387 | e_1 = eg.__context__ |
| 388 | self.assertIsInstance(e_1, TimeoutError) |
| 389 | e_2 = e_1.__cause__ |
| 390 | self.assertIsInstance(e_2, asyncio.CancelledError) |
| 391 | self.assertIsNone(e_2.__cause__) |
| 392 | self.assertIsInstance(e_2.__context__, ValueError) |
| 393 | self.assertIs(e_1.__context__, e_2) |
| 394 | |
| 395 | self.assertEqual(len(eg.exceptions), 1, eg) |
| 396 | e1 = eg.exceptions[0] |
| 397 | # Expect ZeroDivisionError raised during handling of TimeoutError |
| 398 | # caused by CancelledError (it is a different CancelledError). |
| 399 | self.assertIsInstance(e1, ZeroDivisionError) |
| 400 | self.assertIsNone(e1.__cause__) |
| 401 | e2 = e1.__context__ |
| 402 | self.assertIsInstance(e2, TimeoutError) |
| 403 | e3 = e2.__cause__ |
| 404 | self.assertIsInstance(e3, asyncio.CancelledError) |
| 405 | self.assertIsNone(e3.__context__) |
| 406 | self.assertIsNone(e3.__cause__) |
| 407 | self.assertIs(e2.__context__, e3) |
| 408 | |
| 409 | |
| 410 | if __name__ == '__main__': |
nothing calls this directly
no test coverage detected