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 _on_event_box_size_allocate(self, event_box, allocation):
    if self._is_event_box_allocated_size:
      return