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Fix #28552 Add test for DataFrame min/max preserve timezone #33905

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Merged
merged 4 commits into from May 12, 2020
Merged

Fix #28552 Add test for DataFrame min/max preserve timezone #33905

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bc76a29
Fix #28552 Add test for DataFrame min/max preserve timezone
Apr 30, 2020
e8268bc
#28552 Rename variables in TestDataFrameTimezones.test_preserve_timez…
May 9, 2020
a5295d8
Fix #28552 Move test to test_analytics.py and clean up
May 12, 2020
0be205e
Merge branch 'master' into GH-28552
May 12, 2020
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13 changes: 13 additions & 0 deletions pandas/tests/frame/test_analytics.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1285,3 +1285,16 @@ def test_min_max_dt64_api_consistency_empty_df(self):
# check axis 1
tm.assert_series_equal(df.min(axis=1), expected_float_series)
tm.assert_series_equal(df.min(axis=1), expected_float_series)

@pytest.mark.parametrize(
"initial",
["2018-10-08 13:36:45+00:00", "2018-10-08 13:36:45+03:00"], # Non-UTC timezone
)
@pytest.mark.parametrize("method", ["min", "max"])
def test_preserve_timezone(self, initial: str, method):
# GH 28552
initial_dt = pd.to_datetime(initial)
expected = Series([initial_dt])
df = DataFrame([expected])
result = getattr(df, method)(axis=1)
tm.assert_series_equal(result, expected)