With dp4j.jar in your project classpath you directly access private members in your tests, w/o Reflection API boilerplate code; It also generates Design Patterns code and compile-time validates implementations. And Compiler & Co work for you again!
- Test private methods (and fields) from your tests w/o writing code (it'll be injected)
- Implement (and/or validate) the Singleton Pattern by adding @Singleton to the class declaration
- Access Design Patterns documentations as JavaDoc of @PatternName (eg. @TemplateMethod)
- In your tests change a final (constant) field w/o writing code, except for '= what you want' (again, it'll be injected)
Very great and useful idea! Why I didn't find it previously?