When Annelore Egger first began programming, unexpected code behavior often led to frustration. It was only after discovering unit testing that things started to make sense. Testing not only validated the code but also encouraged clearer, more structured development practices.

However, as her experience grew, new challenges emerged—particularly with overly complex unit and integration tests. In many cases, it became unclear what was actually being tested, and when tests failed, it was difficult to determine whether the issue lay in the code or the test setup itself. This ultimately eroded trust in the test suite.

In this talk, Annelore shares key lessons learned from these experiences and explores how to harness the full power of testing without falling into the trap of overcomplication. Using JUnit and Mockito, she demonstrates how to write tests that are clear, purposeful, and aligned with real validation goals.

She also discusses how designing for testability naturally leads to cleaner, more maintainable, and readable code—code that does more than just pass tests.

Attendees will leave with practical strategies for building a testing approach that simplifies development and enhances code quality. Whether they are new to testing or have struggled with overly complex test suites, this session offers a roadmap to building confidence in tests that truly support the development process.