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Add test for unique aggregation returning different dtypes #47603

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Merged
merged 6 commits into from
Jul 26, 2022
Merged

Add test for unique aggregation returning different dtypes #47603

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0097f75
TST: Added test for consistent type with unique agg #22558
KingOfTheShow69 Jul 5, 2022
1d695b1
Merge remote-tracking branch 'upstream/main' into unique-test
KingOfTheShow69 Jul 5, 2022
06db464
TST: Added test for consistent type with unique agg #22558
KingOfTheShow69 Jul 5, 2022
f977a15
TST: Moved and restructured test #22558
KingOfTheShow69 Jul 6, 2022
84f075d
TST: Moved test to different file #22558
KingOfTheShow69 Jul 15, 2022
105c338
TST: Changed scalars to 1-element lists
KingOfTheShow69 Jul 21, 2022
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18 changes: 18 additions & 0 deletions pandas/tests/util/test_assert_series_equal.py
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Original file line number Diff line number Diff line change
Expand Up @@ -382,3 +382,21 @@ def test_assert_series_equal_identical_na(nulls_fixture):
# while we're here do Index too
idx = pd.Index(ser)
tm.assert_index_equal(idx, idx.copy(deep=True))


@pytest.mark.parametrize(
"test, constant",
[
({"a": [1, 2, 3], "b": [1, 1, 1]}, {"a": [1, 2, 3], "b": 1}),
({"a": [2, 2, 2], "b": [1, 1, 1]}, {"a": 2, "b": 1}),
],
)
def test_unique_agg_type_is_series(test, constant):
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This is still in the wrong place. Please check the frame folder for example. We have specific aggregations tests where this belongs

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I see some aggregation tests for DataFrames in apply/test_frame_apply.py. Would that be an appropriate place for this test?

# GH#22558
df1 = DataFrame(test)
expected = Series(data=constant, index=["a", "b"], dtype="object")
aggregation = {"a": "unique", "b": "unique"}

result = df1.agg(aggregation)

tm.assert_series_equal(result, expected)