I have a service with a private final hashmap as a cache. People access this service to fetch some information. Everytime a user triggers this the cache might be updated if some time has passed or the user visits the service for the first time.

I’m developing a project. This project has a repository (UserRepository) which is referenced by other parts of the project, I want to know if I have to test the repository method each time it is referenced: For example, the method (repository.save()) is used in more parts of the project, does it have to be tested each time?

I have a project with Java 17 and Spring 3. In my pom.xml the Test extensions are the following:

Sonarqube is saying I don’t have test coverage for the below catch block so
could you suggest me the best way to write a test for both the “try” and the “catch” blocks?