This lecture really scratched my itch when it came to testing. I was studying alone and had no place to get feedback on test codes, so I was looking through several project repos from IT clubs or educational programs and thinking about how to write test codes. This lecture really helped me. Now that I know the direction and method to some extent, I just need to learn it myself and make it my own. Thank you for the great lecture. I could feel that you put a lot of effort into preparing the lectures. Thank you.