Worked on the apache/teaclave-trustzone-sdk repository to enhance the resilience of UUID parsing tests in Rust. Refactored the test suite 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 the likelihood of panics and flaky test outcomes. Focused on improving code hygiene and test reliability, the work strengthened CI stability and increased confidence in edge-case handling. Demonstrated proficiency in Rust, unit testing, and robust error management while prioritizing maintainable and resilient test patterns.