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 test_date_later_than_1900(self):
        assert_equal(inputs.date("1900-01-01"), datetime(1900, 1, 1))