Learn how to test Spring Boot repositories using @DataJpaTest. Learn what should be tested on the persistence layer and how.
Learn how to test Spring Boot web controllers using @WebMvcTest. Learn what responsibilities a controller has and how to test them.
Learn how to write unit tests for Spring Boot applications. Learn the technical details necessary to write good unit tests.
Learn how to write JUnit 5 nested tests. Learn how to provide a hierarchical structure to describe relationships between the tests.
In this article, we will learn different ways to improve test readability. Tests document how the system should behave. They also act as self-verifying executable specifications.
Learn how to use the test data builder pattern to make it easy to create objects for tests. Learn how to reduce boilerplate code with Lombok.
What are the DRY and DAMP principles? Why do people consider DRY and DAMP in tests contradictory and how can we achieve both?
What is the best way to test private methods? Should I use some library or use reflection? Can I just make the method public?
Learn how to run code before and after each test or all tests in the test class. Also learn the execution order of lifecycle methods in different cases.
Learn how to assert an exception is thrown using JUnit 5. Also, learn how to check the error message of the thrown exception.