Worked on the freeCodeCamp/freeCodeCamp repository to enhance the Bill Splitter feature by developing comprehensive output validation tests. Focused on strengthening test coverage, the work involved implementing regex-based validation and capturing stdout to verify the correctness of printed results, particularly for curriculum steps seven and eight. This approach ensured that user-facing output remained accurate as the curriculum evolved, reducing the risk of regressions and surfacing issues early in the development process. Leveraged Python and regular expressions to create CI-friendly tests and maintained clear documentation, demonstrating a methodical approach to testing and a strong emphasis on reliability and maintainability in feature development.