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TST: Add Categorical Series test #33525

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Merged
merged 4 commits into from
Apr 21, 2020
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TST: Add Categorical Series test #33525

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TST: Add Categorical Series test
dsaxton Apr 13, 2020
2ad7888
Merge remote-tracking branch 'upstream/master' into cat-tests
dsaxton Apr 17, 2020
939843c
Test
dsaxton Apr 17, 2020
cc2c9e0
Revert "TST: Add Categorical Series test"
dsaxton Apr 17, 2020
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9 changes: 6 additions & 3 deletions pandas/tests/arrays/categorical/test_analytics.py
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Expand Up @@ -90,10 +90,13 @@ def test_min_max_with_nan(self, skipna):

@pytest.mark.parametrize("function", ["min", "max"])
@pytest.mark.parametrize("skipna", [True, False])
def test_min_max_only_nan(self, function, skipna):
@pytest.mark.parametrize("box_in_series", [True, False])
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CategoricalIndex, DataFrame col?

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@jorisvandenbossche jorisvandenbossche Apr 13, 2020 •
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There are Series tests elsewhere for Categorical min/max, eg the previous PR that touched the Categorical.min/max implementation added the Series tests in reductions/test_reductions.py: 37526c1, so I would update the tests there instead of here in this file

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@jorisvandenbossche Do you mean do that instead of what I'm doing here, or rather that CategoricalIndex and DataFrame cases should be added to test_reductions.py instead of here?

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yes the point is to do these in test_reductions.py, adding a similiar missing categorical test there

def test_min_max_only_nan(self, function, skipna, box_in_series):
# https://github.com/pandas-dev/pandas/issues/33450
cat = Categorical([np.nan], categories=[1, 2], ordered=True)
result = getattr(cat, function)(skipna=skipna)
arr = Categorical([np.nan], categories=[1, 2], ordered=True)
if box_in_series:
arr = Series(arr)
result = getattr(arr, function)(skipna=skipna)
assert result is np.nan

@pytest.mark.parametrize("method", ["min", "max"])
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