During May 2025, Pupiczek1977 enhanced the scrumdojo/quizmaster repository by developing comprehensive test coverage for the quiz feature, focusing on the retrieval and update logic within the QuizController. Leveraging Java and Spring Boot, they introduced a dedicated QuizControllerTest.java, which improved the reliability of critical-path quality assurance and enabled safer future refactoring. Their work included cleaning up the test suite by removing obsolete code and unused imports, which reduced maintenance overhead and minimized the risk of flaky tests. Through targeted unit testing and code hygiene improvements, Pupiczek1977 contributed to more robust CI processes and streamlined ongoing backend development efforts.