GujaLomsadze opened a new pull request, #50543:
URL: https://github.com/apache/arrow/pull/50543
### Rationale for this change
pandas 3.0.0 deprecated constructing or casting to a `Categorical` with
non-NA values that are not present in the specified `dtype.categories`.
This surfaces as DeprecationWarnings in the PyArrow
test suite when run against pandas >= 3.0 (GH-49255), in test_category
and test_category_implicit_from_pandas.
### What changes are included in this PR?
- test_category: remove the `cat_strings_with_na` column (relied on
silent 'qux' -> NaN; redundant, cat_strings already carries nulls).
- test_category_implicit_from_pandas: use explicit None
(['a','b',None]) instead of out-of-category 'c'.
### Are these changes tested?
Yes - test-only. Verified no DeprecationWarning under pandas 3.0.3.
### Are there any user-facing changes?
No.
Closes #49255.
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