How to start using unit tests and integration tests using spring as an example?

Question

Software testing

Please tell me books or articles that will help you understand how to apply testing and provide real examples.
It is very important that the material is considered using the example of spring, because now I don’t have the opportunity to go deep into other areas.
I need to improve both fundamental knowledge on this issue and applied knowledge, for example, using mockito.

Answer 1

What's wrong with Google search? there are quite a few articles on the subject.