Given the age of the course, I encountered some difficulties using RNTL, which is suitable for the current version, instead of enzyme while applying the course's teachings. However, the overall content of the course is very valuable for those who are completely unfamiliar with TDD but interested in it. I also learned a lot and plan to actively introduce it in my next new project. If I had one wish, it would be that if you ever have the time, a renewal of the course to match a version around RN 0.7 (React 18) would be helpful to many people.