This is actually pretty normal in therapy, especially at the beginning or during the more vulnerable times. I'm not sure what you are personally in therapy for, but many people who have abandonment issues or extreme fears of rejection/judgement tend to use "tests" as a defense mechanism. It's a way of "putting your foot in the water" to get an idea of what to expect when you decide to jump in.

I know it's hard not to worry; but it is likely he is not mad at you at all. He could have simply been pointing it out to you...making an observation and bringing it to your attention. Sometimes we don't realize some of the behavior we are portraying and it is T's job to let us know. The more aware we are, the easier it gets to remain mindful of this behavior in our daily lives.