<Completion Commemorative Review> [What You Can Learn] "Test-driven Development Method Mainly for MVC(Service) Unit" "Usage of Spring Boot and 3rd Party" - How to Use Boot-Starter-*, ObjectMapper, Security, Lombok [Correct Learning Attitude] - "Setting a Standard and Doing It" I wrote this based on JUnit 5 + spring-boot 2.4.5 version, not as I started in the lecture. It's different when you type in the code? Of course, I tried to write it based on my code. So if it doesn't work 1. Check the students' Q&A board and see if they have the same problem and how they solved it, and if it can be applied, apply it, and if it's different, **fit my version** If not, modify 2. or 3. to fit my project and my style 2. Check the official documentation for the version 3. If it doesn't work, check the lecture repository [Things that should be learned in advance] - Core principles or core usage methods of libraries used in the lecture [Things that should be learned while doing] - If you are using IntelliJ (paid or Edu version), make a habit of clicking Control and **going to the implementation of the source code and slowly reading the comments in the method** - How to use the libraries and how to Google them