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Run each PEP561 test in its virtualenv dir #5225

merged 2 commits into from Jun 17, 2018


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ethanhs commented Jun 16, 2018

When working on partial stub packages I realized that the changes in #5060 were flaking. This change runs mypy in each temporary directory, which avoids parrallelism/cache issues (sometimes the multiple processes would try to read/write the same cache file). To test this thoroughly, I ran the test 25 times in a row, with no failures.

if python_executable != sys.executable:
out, err, returncode =
assert out == expected_out, err
assert err == expected_err, out
assert returncode == expected_returncode, returncode
if venv_dir is not None:

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JelleZijlstra Jun 16, 2018


Put this in a finally block.

@ilevkivskyi ilevkivskyi merged commit 4389341 into python:master Jun 17, 2018

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@ethanhs ethanhs deleted the ethanhs:seppep561tests branch Jan 31, 2019

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