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gh-130095: Mark _py_abc tests as not thread-safe #130131

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Feb 14, 2025
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gh-130095: Mark _py_abc tests as not thread-safe #130131

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14 changes: 10 additions & 4 deletions Lib/test/test_abc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -684,10 +684,16 @@ class B(A, metaclass=abc_ABCMeta, name="test"):

return TestLegacyAPI, TestABC, TestABCWithInitSubclass

TestLegacyAPI_Py, TestABC_Py, TestABCWithInitSubclass_Py = test_factory(abc.ABCMeta,
abc.get_cache_token)
TestLegacyAPI_C, TestABC_C, TestABCWithInitSubclass_C = test_factory(_py_abc.ABCMeta,
_py_abc.get_cache_token)
TestLegacyAPI_Py, TestABC_Py, TestABCWithInitSubclass_Py = test_factory(_py_abc.ABCMeta,
_py_abc.get_cache_token)
TestLegacyAPI_C, TestABC_C, TestABCWithInitSubclass_C = test_factory(abc.ABCMeta,
abc.get_cache_token)
Comment on lines +687 to +690
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It looks like the original version constructed the _Py variants using test_factory(abc.ABCMeta, abc.get_cache_token) and the _C variants using test_factory(_py_abc.ABCMeta, _py_abc.get_cache_token). This PR does the inverse. Was the original wrong?

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Yes, the variables were misnamed. Previously, TestLegacyAPI_Py was testing the C implementation and TestLegacyAPI_C was testing the Python implementation.


# gh-130095: The _py_abc tests are not thread-safe when run with
# `--parallel-threads`
TestLegacyAPI_Py.__unittest_thread_unsafe__ = True
TestABC_Py.__unittest_thread_unsafe__ = True
TestABCWithInitSubclass_Py.__unittest_thread_unsafe__ = True

if __name__ == "__main__":
unittest.main()
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