Method test_isin_dt64tz_with_nat

pandas/tests/test_algos.py:1024–1033

(self)

        assert not res2.any()

    def test_isin_dt64tz_with_nat(self):
        # the all-NaT values used to get inferred to tznaive, which was evaluated
        #  as non-matching GH#56427
        dti = date_range("2016-01-01", periods=3, tz="UTC")
        ser = Series(dti)
        ser[0] = NaT

        res = algos.isin(ser._values, [NaT])
        exp = np.array([True, False, False], dtype=bool)
        tm.assert_numpy_array_equal(res, exp)

    def test_categorical_from_codes(self):
        # GH 16639