Disclaimer
As this was one of my first recorded online courses, the audio and video quality is not perfect. Consider my latest videos on YouTube, the Testing Spring Boot Applications Primer (beginner to intermediate) or Masterclass (advanced) for more recent content on testing Spring Boot applications.
Since Spring Boot 2.3 you need to add the
spring-boot-starter-validation
dependency to include the Bean Validation API: https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.3-Release-Notes#validation-starter-no-longer-included-in-web-startersThanks for the hint 🙂