def METHOD_NAME(self):
    grp = EmitterGroup(source=self, em1=Event)
    grp.connect(self.record_event)
    self.result = None
    ev = grp.em1(test_key=1)
    self.assert_result(
        event=ev,
        source=self,
        sources=[
            self,
            self],
        test_key=1)