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BUG: setitem with boolean mask and series as value is broken for Series with EA type #37676

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Merged
merged 12 commits into from
Nov 17, 2020
16 changes: 16 additions & 0 deletions pandas/tests/series/indexing/test_setitem.py
Original file line number Diff line number Diff line change
Expand Up @@ -135,6 +135,22 @@ def test_setitem_boolean_td64_values_cast_na(self, value):
expected = Series([NaT, 1, 2], dtype="timedelta64[ns]")
tm.assert_series_equal(series, expected)

def test_setitem_boolean_nullable_int_types(self, any_nullable_int_dtype):
# GH: 26468
ser = Series([5, 6, 7, 8], dtype=any_nullable_int_dtype)
ser[ser > 6] = Series(range(4), dtype=any_nullable_int_dtype)
expected = Series([5, 6, 2, 3], dtype=any_nullable_int_dtype)
tm.assert_series_equal(ser, expected)

ser = Series([5, 6, 7, 8], dtype=any_nullable_int_dtype)
ser.loc[ser > 6] = Series(range(4), dtype=any_nullable_int_dtype)
tm.assert_series_equal(ser, expected)

ser = Series([5, 6, 7, 8], dtype=any_nullable_int_dtype)
loc_ser = Series(range(4), dtype=any_nullable_int_dtype)
ser.loc[ser > 6] = loc_ser.loc[loc_ser > 1]
tm.assert_series_equal(ser, expected)


class TestSetitemViewCopySemantics:
def test_setitem_invalidates_datetime_index_freq(self):
Expand Down