I can say that no, I don't test people, at least not on a conscious level. If I'm getting to know someone, yes I observe, analyze, react... in that order... but I never pull puppet strings to see if they dance the way I want. I've only ever once thought "I want to befriend this person," and on many other times, it either just happens, or they try to do the befriending.
I mean, I have 'danced' and 'twirled' around individuals who I see they're not worthy of my time, if they stick to my rhythm, and follow, then I know they're trying to get to know me sincerely. Not sure if that's just a test or just myself being myself. But regardless, I don't test people on purpose.