How did you go about testing your program? What were the results of that testing?

Today I finished my MPG assignment, which was a program that needed two classes. It was very interesting, but also challenging. After I finished the first class, I made another class to see if my first class works properly. When I ran the testing class, I turned out to be queer, which meant that my first class had errors in it. Thus, I went back and looked at the problems, which were hard to identify, and solve. Finally, after making all the solutions to my first class, I went back to the testing class and ran it. It worked this time. Mission Accomplished.