In high school we had to take the ASVAB test, which was basically a military aptitude test, and I believe the PSAT also gave you aptitude test-like information. They said I would make either a good journalist or a good diplomat. Though after the ASVAB I kept getting recruiters begging me to be an interrogator (right after Abu Ghraib, no less... '-_- ) In the end, I am none of those things and I don't believe I would enjoy being any of those things. Take these tests with a very large grain of salt, as your abilities and interests will likely change many times in your life and you shouldn't pigeon hole yourself into something you'll regret later because some test told you to.
If you're just curious, though, those kinds of tests can be fun to see what results you get.
