def test_build_event(self):
        evt = event.build_event("evt_name", arg1="val1", arg2=None)
        assert evt.name == "evt_name"
        assert evt.args == {'arg1': "val1", 'arg2': None}
def __init__(self, root_path: str, defaults: t.Optional[dict] = None) -> None:
        dict.__init__(self, defaults or {})
        self.root_path = root_path