It was a little disappointing. From the title, I expected it to be about creating an actual project with TDD, but maybe I misunderstood the title? I think the content about TDD was a little lacking. I'm just starting to learn about TDD and am studying it, so I'd like to inform you that the content below may be wrong. If it's wrong, please point it out. Most of the tests seem to be integration tests, but you rarely write unit tests. I wish you had written tests that were a little more realistic about when to write unit tests and when to write integration tests. Another book that performs TDD (written in JAVA) has a lot of consideration when writing and refactoring unit tests, but in this lecture, you simply write an integration test and refactor it into ctrl.js or index.js. I think this is a common framework for node-express projects. In fact, I think it's closer to simply separating the code. Rather, I expected a little bit about how to remove or think about when code duplication occurs, or how to apply JavaScript design patterns. It seemed similar to other JS testing framework courses on Udemy. I'm a little cautious because I feel like I'm leaving a review a little too presumptuous, but I was wandering around because I couldn't find a book or course that made TDD fun for JS projects, and I found this course and took it with great expectations. If you have the opportunity, I'd be willing to take an intermediate or advanced course for the course. Thank you.