def METHOD_NAME(self):
    db_events_filter = DbEventsFilter(db_event=DatabaseLogEvent.REACTOR_STALLED)
    self.assertEqual(db_events_filter, pickle.loads(pickle.dumps(db_events_filter)))
    db_events_filter.to_json()
    event1 = DatabaseLogEvent.REACTOR_STALLED()
    event2 = DatabaseLogEvent.NO_SPACE_ERROR()
    self.assertTrue(db_events_filter.eval_filter(event1))
    self.assertFalse(db_events_filter.eval_filter(event2))