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 get_warnings(self):
        """
        :returns: an array of warnings gathered during the transaction replay
        """

        return self._warnings