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TST: Add test for numpy.maximum with Timestamp and Series of datetime64 #59338

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Jul 29, 2024
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TST: Add test for numpy.maximum with Timestamp and Series of datetime64 #59338

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16 changes: 16 additions & 0 deletions pandas/tests/arithmetic/test_datetime64.py
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Original file line number Diff line number Diff line change
Expand Up @@ -389,6 +389,22 @@ def test_dt64_compare_datetime_scalar(self, datetimelike, op, expected):
expected = Series(expected, name="A")
tm.assert_series_equal(result, expected)

def test_ts_series_numpy_maximum(self):
# GH#50864, test numpy.maximum does not fail
# given a TimeStamp and Series(with dtype datetime64) comparison
ts = Timestamp("2024-07-01")
ts_series = Series(
["2024-06-01", "2024-07-01", "2024-08-01"],
dtype="datetime64[us]",
)

expected = Series(
["2024-07-01", "2024-07-01", "2024-08-01"],
dtype="datetime64[us]",
)

tm.assert_series_equal(expected, np.maximum(ts, ts_series))


class TestDatetimeIndexComparisons:
# TODO: moved from tests.indexes.test_base; parametrize and de-duplicate
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