I don't at all believe in succumbing to certain messages they give, meaning you should be in trouble for any reaction, like if it's a favor saying they like you over someone else. I know it could also be if you find joy in outwitting them. I guess you just have to judge what the person is saying and remember that other people are worth something.
So, basically, I don't believe in it as a test because that's doing the deed. I know, sometimes I go through those things, but I grew up with that instilled in my functioning because it was true. I don't do it myself. I kind of disdain people who do because also they are not nice to me. That's their problem if they're in league with the person they're dissing.