def test_type(self):
        rset = event.ResultSet()
        with pytest.raises(NotImplementedError):
            rset.extend([])
        with pytest.raises(NotImplementedError):
            rset.extend(False)
def get_except(self, func, *args):
        try:
            func(*args)
        except Exception as detail:
            return detail.__class__, str(detail)