Method test_dataarray_diff_n1

xarray/tests/test_dataarray.py:4207–4211

(self)

        assert title.endswith("...")

    def test_dataarray_diff_n1(self) -> None:
        da = DataArray(np.random.randn(3, 4), dims=["x", "y"])
        actual = da.diff("y")
        expected = DataArray(np.diff(da.values, axis=1), dims=["x", "y"])
        assert_equal(expected, actual)

    def test_coordinate_diff(self) -> None:
        # regression test for GH634