def test_type(self):
        rset = event.ResultSet()
        with pytest.raises(NotImplementedError):
            rset.extend([])
        with pytest.raises(NotImplementedError):
            rset.extend(False)
def install_autopkgtest_results_formatter():
    subprocess.check_call(
        ["sudo", "snap", "install", "autopkgtest-results-formatter", "--edge"]
    )