Personality tests are fun nonsense, in line with horoscopes and fortune tellers. I've taken a bunch of them over the years, both online and offline, and never learned anything consistent or surprising about myself.
The results are always in vague, yet flattering, language that's impossible to dispute: Hmm, I guess I do like being with people, and I enjoy parties. And yet, I also enjoy quiet time to myself, as well as contemplating the nature of the universe. Oh, and I love taking personality tests!