8000 gh-96030: IsolatedAsyncioTestCase: don't create asyncio runner for skipped tests by tiran · Pull Request #96031 · python/cpython · GitHub
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gh-96030: IsolatedAsyncioTestCase: don't create asyncio runner for skipped tests #96031

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gh-96030: IsolatedAsyncioTestCase: don't create asyncio runner for skipped tests #96031

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gh-96030: IsolatedAsyncioTestCase: don't create asyncio runner for sk…
tiran Aug 16, 2022
4bdb824
Use BaseException
tiran Aug 16, 2022
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29 changes: 13 additions & 16 deletions Lib/unittest/async_case.py
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Original file line number Diff line number Diff line change
Expand Up @@ -79,17 +79,26 @@ async def enterAsyncContext(self, cm):
return result

def _callSetUp(self):
self._asyncioTestContext.run(self.setUp)
self._callAsync(self.asyncSetUp)
self._setupAsyncioRunner()
try:
self._asyncioTestContext.run(self.setUp)
self._callAsync(self.asyncSetUp)
except Exception:
# _callTearDown is not called when _callSetUp fails.
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The problem is that doCleanups() is called in run() if _callSetUp() fails. It will try to call callbacks after closing the runner.

self._tearDownAsyncioRunner()
raise

def _callTestMethod(self, method):
if self._callMaybeAsync(method) is not None:
warnings.warn(f'It is deprecated to return a value!=None from a '
f'test case ({method})', DeprecationWarning, stacklevel=4)

def _callTearDown(self):
self._callAsync(self.asyncTearDown)
self._asyncioTestContext.run(self.tearDown)
try:
self._callAsync(self.asyncTearDown)
self._asyncioTestContext.run(self.tearDown)
finally:
self._tearDownAsyncioRunner()

def _callCleanup(self, function, *args, **kwargs):
self._callMaybeAsync(function, *args, **kwargs)
Expand Down Expand Up @@ -125,18 +134,6 @@ def _tearDownAsyncioRunner(self):
runner = self._asyncioRunner
runner.close()

def run(self, result=None):
self._setupAsyncioRunner()
try:
return super().run(result)
finally:
self._tearDownAsyncioRunner()

def debug(self):
self._setupAsyncioRunner()
super().debug()
self._tearDownAsyncioRunner()
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@graingert graingert Aug 16, 2022 •
edited
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this used to not be called on an exception in debug() you probably want a test for this new behavior ?

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Also I think you fixed this #96021

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What do you mean by "this"? The function call self._tearDownAsyncioRunner()? It still does not get called when the setup or test case fails. It now gets called when asyncTearDown or tearDown fail with an exception. I think it's an acceptable deviation. Exceptions in tear down code are rare and it's ok to clean up the runner on error.

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@graingert graingert Aug 16, 2022 •
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Right but it used to not get called when debug failed, and now it does? So I think you fixed two bugs


def __del__(self):
if self._asyncioRunner is not None:
self._tearDownAsyncioRunner()
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2022-08-16-19-49-39.gh-issue-96030.B3ZQeX.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
The ``run`` method of :class:`unittest.IsolatedAsyncioTestCase`
no longer sets up an asyncio runner if a test case or class is skipped.
0