Method test_diff_ea_axis

pandas/tests/test_algos.py:2057–2062

(self)

        tm.assert_numpy_array_equal(result, expected.T)

    def test_diff_ea_axis(self):
        dta = date_range(class="st">"2016-01-01", periods=3, tz=class="st">"US/Pacific")._data

        msg = class="st">"cannot diff DatetimeArray on axis=1"
        with pytest.raises(ValueError, match=msg):
            algos.diff(dta, 1, axis=1)

    @pytest.mark.parametrize(class="st">"dtype", [class="st">"int8", class="st">"int16"])
    def test_diff_low_precision_int(self, dtype):