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Regression test for dt.total_seconds() #52731

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Apr 19, 2023
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Regression test for dt.total_seconds() #52731

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8 changes: 8 additions & 0 deletions pandas/tests/arrays/test_timedeltas.py
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,14 @@ def test_timedelta_array_total_seconds(self):
result = pd.array([Timedelta("2 min")]).total_seconds()[0]
assert result == expected

def test_total_seconds_nanoseconds(self):
# issue #48521
start_time = pd.Series(["2145-11-02 06:00:00"]).astype("datetime64[ns]")
end_time = pd.Series(["2145-11-02 07:06:00"]).astype("datetime64[ns]")
expected = (end_time - start_time).values / np.timedelta64(1, "s")
result = (end_time - start_time).dt.total_seconds().values
assert result == expected

@pytest.mark.parametrize(
"nat", [np.datetime64("NaT", "ns"), np.datetime64("NaT", "us")]
)
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