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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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16 changes: 16 additions & 0 deletions pandas/tests/frame/test_timezones.py
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Original file line number Diff line number Diff line change
Expand Up @@ -166,3 +166,19 @@ def test_constructor_data_aware_dtype_naive(self, tz_aware_fixture):
result = DataFrame({"d": [pd.Timestamp("2019", tz=tz)]}, dtype="datetime64[ns]")
expected = DataFrame({"d": [pd.Timestamp("2019")]})
tm.assert_frame_equal(result, expected)

@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
# Given
initial_dt = pd.to_datetime(initial)
expected = pd.Series([initial_dt])
df = DataFrame([expected])
# When
result: pd.Series = getattr(df, method)(axis=1)
# Then
tm.assert_series_equal(result, expected)