I came a cross this scene from the movie "Crazy Stupid Love. Although this is kind of chick-flick, I thought I would share what I think is a perfect example of a shit test at 1:20.

https://www.youtube.com/watch?v=KL5qmF9EEPs

Notice how Ryan Gosling holds frame and responds to the girl's shit test calmly.

After successfully passing the shit test, also notice the change in girl's tone of voice and change of attitude. At this point she doesn't know how to react to the situation and outwardly expresses her feelings of insecurity.