Unit testing forms the foundation of reliable and maintainable code. It helps developers validate individual components in isolation [...] ...

Integrate Hamcrest and Mockito with JUnit 5 for more sophisticated unit testing with assertions, simulations, and behavior verification using Mockito spies.

In the Preface for Effective Unit Testing: A Guide for Java Developers , author Lasse Koskela states that although the impetus for Effective Unit Testing was to "write a Java edition of Roy ...