[ARROW-18125] [Python] Handle pytest 8 deprecations about pytest.warns(None)

• Type: Test
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 11.0.0
• Component/s: Python
• External issue URL: https://github.com/apache/arrow/issues/33322
• Assignee: Miles Granger
• Reporter: Joris Van den Bossche
• Created: 21/Oct/22 11:29
• Updated: 11/Jan/23 11:58
• Resolved: 30/Nov/22 08:25

Description

We have a few warnings about that when running the tests, for example:

pyarrow/tests/test_pandas.py::TestConvertMetadata::test_rangeindex_doesnt_warn
pyarrow/tests/test_pandas.py::TestConvertMetadata::test_multiindex_doesnt_warn
  /home/joris/miniconda3/envs/arrow-dev/lib/python3.10/site-packages/_pytest/python.py:192: PytestRemovedIn8Warning: Passing None has been deprecated.
  See https://docs.pytest.org/en/latest/how-to/capture-warnings.html#additional-use-cases-of-warnings-in-tests for alternatives in common use cases.
    result = testfunction(**testargs)

Issue Links

• is a child of: ARROW-18399 [Python] Reduce warnings during tests