"Testing" occurs naturally within all relationships. It's the exploration of boundaries, the feeling out of positive and negative preferences. It's typically not a malice laced set-up, in fact it's usually not even overtly intentional.

When it does become a set-up, however, when testing starts to toe the line to manipulation, then I have an issue. Responding to and paying attention to how your Dom reacts to your interactions with others when you go out in public together is a good test of where boundaries and comfort levels exist. Going out and over-the-top hitting on every man in sight to see how much your Dom can take before he snaps and claims you back in a jealous rage so you can feel all wanted and paid attention to? Now that's a horse of an entirely different color, and is manipulative testing at it's worst.