Feeling a bit blind-sided

This morning after about 40 minutes into my class the other teacher came in and told me I would need to leave the class now to take an exam.  Though on the exam it stated I had 30 minutes to complete the test, I was in fact only given 20 minutes before it was taken away from me.  Needless to say, I did not finish the test.  However, later in the morning this teacher came back into the classroom and told me I did "excellent" on the exam.  I have no idea what the test was for, only that it started out easy and then became quite hard as I progressed through it.  Ugh, I hate tests anyway and then to just have it sprung on me doesn't feel too good.  I can't do anything about it, so I guess I need to just let it go and move on with the day.  Maybe an episode or two of Scooby Doo would make me feel better :)