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import asyncio
import typing
import unittest
from functools import wraps
from tenacity import RetryCallState, retry
def asynctest(
callable_: typing.Callable[..., typing.Any],
) -> typing.Callable[..., typing.Any]:
@wraps(callable_)
def wrapper(*a: typing.Any, **kw: typing.Any) -> typing.Any:
loop = asyncio.get_event_loop()
return loop.run_until_complete(callable_(*a, **kw))
return wrapper
MAX_RETRY_FIX_ATTEMPTS = 2
class TestIssue478(unittest.TestCase):
def test_issue(self) -> None:
results = []
def do_retry(retry_state: RetryCallState) -> bool:
outcome = retry_state.outcome
assert outcome
ex = outcome.exception()
_subject_: str = retry_state.args[0]
if _subject_ == "Fix": # no retry on fix failure
return False
if retry_state.attempt_number >= MAX_RETRY_FIX_ATTEMPTS:
return False
if ex:
do_fix_work()
return True
return False
@retry(reraise=True, retry=do_retry)
def _do_work(subject: str) -> None:
if subject == "Error":
results.append(f"{subject} is not working")
raise Exception(f"{subject} is not working")
results.append(f"{subject} is working")
def do_any_work(subject: str) -> None:
_do_work(subject)
def do_fix_work() -> None:
_do_work("Fix")
try:
do_any_work("Error")
except Exception as exc:
assert str(exc) == "Error is not working"
else:
assert False, "No exception caught"
assert results == [
"Error is not working",
"Fix is working",
"Error is not working",
]
@asynctest
async def test_async(self) -> None:
results = []
async def do_retry(retry_state: RetryCallState) -> bool:
outcome = retry_state.outcome
assert outcome
ex = outcome.exception()
_subject_: str = retry_state.args[0]
if _subject_ == "Fix": # no retry on fix failure
return False
if retry_state.attempt_number >= MAX_RETRY_FIX_ATTEMPTS:
return False
if ex:
await do_fix_work()
return True
return False
@retry(reraise=True, retry=do_retry)
async def _do_work(subject: str) -> None:
if subject == "Error":
results.append(f"{subject} is not working")
raise Exception(f"{subject} is not working")
results.append(f"{subject} is working")
async def do_any_work(subject: str) -> None:
await _do_work(subject)
async def do_fix_work() -> None:
await _do_work("Fix")
try:
await do_any_work("Error")
except Exception as exc:
assert str(exc) == "Error is not working"
else:
assert False, "No exception caught"
assert results == [
"Error is not working",
"Fix is working",
"Error is not working",
]
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