Method test_isin_empty

pandas/tests/series/methods/test_isin.py:100–106

(self, empty)

    @pytest.mark.parametrize("empty", [[], Series(dtype=object), np.array([])])
    def test_isin_empty(self, empty):
        # see GH#16991
        s = Series(["a", "b"])
        expected = Series([False, False])

        result = s.isin(empty)
        tm.assert_series_equal(expected, result)

    def test_isin_read_only(self):
        # https://github.com/pandas-dev/pandas/issues/37174