During May 2025, Simson contributed to the apache/teaclave-trustzone-sdk repository by enhancing the resilience of UUID parsing tests. He refactored the test suite in Rust to eliminate the use of unwrap, instead adopting map-based error handling to gracefully manage potential parsing failures. This approach ensured that assertions on formatted UUID strings were only performed when parsing succeeded, reducing flaky test outcomes and preventing panics on invalid input. By focusing on robust unit testing and careful Result and Option handling, Simson improved the reliability of the test suite, leading to more stable continuous integration and greater confidence in edge-case coverage.