def test_invalid_scalar_index(adata, index):
    # https://github.com/theislab/anndata/issues/619
    with pytest.raises(IndexError, match=r".*index.* out of range\."):
        _ = adata[index]
def generateUUID():  # pylint: disable=invalid-name
    """ Utility function; generates UUIDs """
    return str(uuid.uuid4())