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TST: collect Period tests #56073

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Nov 20, 2023
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TST: collect Period tests #56073

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TST: collect Period tests
jbrockmendel Nov 19, 2023
32ce671
Collect Period tests
jbrockmendel Nov 19, 2023
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36 changes: 36 additions & 0 deletions pandas/tests/arithmetic/test_period.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1310,6 +1310,42 @@ def test_parr_add_sub_object_array(self):
expected = PeriodIndex(["2000-12-30"] * 3, freq="D")._data.astype(object)
tm.assert_equal(result, expected)

def test_period_add_timestamp_raises(self, box_with_array):
# GH#17983
ts = Timestamp("2017")
per = Period("2017", freq="M")

arr = pd.Index([per], dtype="Period[M]")
arr = tm.box_expected(arr, box_with_array)

msg = "cannot add PeriodArray and Timestamp"
with pytest.raises(TypeError, match=msg):
arr + ts
with pytest.raises(TypeError, match=msg):
ts + arr
msg = "cannot add PeriodArray and DatetimeArray"
with pytest.raises(TypeError, match=msg):
arr + Series([ts])
with pytest.raises(TypeError, match=msg):
Series([ts]) + arr
with pytest.raises(TypeError, match=msg):
arr + pd.Index([ts])
with pytest.raises(TypeError, match=msg):
pd.Index([ts]) + arr

if box_with_array is pd.DataFrame:
msg = "cannot add PeriodArray and DatetimeArray"
else:
msg = r"unsupported operand type\(s\) for \+: 'Period' and 'DatetimeArray"
with pytest.raises(TypeError, match=msg):
arr + pd.DataFrame([ts])
if box_with_array is pd.DataFrame:
msg = "cannot add PeriodArray and DatetimeArray"
else:
msg = r"unsupported operand type\(s\) for \+: 'DatetimeArray' and 'Period'"
with pytest.raises(TypeError, match=msg):
pd.DataFrame([ts]) + arr


class TestPeriodSeriesArithmetic:
def test_parr_add_timedeltalike_scalar(self, three_days, box_with_array):
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