def test_view_retains_ndarray_subclass():
    adata = ad.AnnData(np.zeros((10, 10)))
    adata.obsm["foo"] = np.zeros((10, 5)).view(NDArraySubclass)

    view = adata[:5, :]

    assert isinstance(view.obsm["foo"], NDArraySubclass)
    assert view.obsm["foo"].shape == (5, 5)
def test_none_to_pointer_fields(self):
        class S(Structure):
            _fields_ = [("x", c_int),
                        ("p", POINTER(c_int))]

        s = S()
        s.x = 12345678
        s.p = None
        self.assertEqual(s.x, 12345678)