Actually, according to the teachings, if you have to go to somebody else and ask them "Am I enlightened?" Then you're not! The Buddha decided it about himself. And he conveyed this to others. If you want to know whether you're enlightened or not, you can ask yourself, "Am I free from greed, am I free of hatred, and am I free from all ignorance of reality?" So if you have to ask somebody "Am I enlightened?," especially if you have had a very expanding concentration experience, then later you get angry, you can say "Well, I'm not enlightened."
In the Theravadin scriptures there are four different stages of enlightenment. But even at those stages they know they've reached that stage. And the first stage is when a person has been freed of all doubt, has ultimate confidence it the Buddha, Dhamma and Sangha, has understood non-self, and is not attached to any rules and rituals thinking that they are going to purify the mind themselves.
Second stage is a little bit more difficult because it's just a weakening of the greed and the hatred in the mind. In the third stage, apparently, all hatred and all sense desire have been removed from the mind. And in the final stage, full enlightenment, all conceit has been removed from the mind, all ignorance and all restlessness and worry. Can you imagine a person with no restlessness and no ignorance and no conceit?