Worked on the mxsm/rocketmq-rust repository to enhance the reliability and maintainability of the rocketmq-common crate by focusing on comprehensive test coverage for the ResourceType enumeration. Developed and integrated detailed unit and integration tests to validate serialization and deserialization logic, directly addressing regression risks and improving code quality. The approach emphasized disciplined version control and clear traceability by linking work to specific issues and pull requests. Utilized Rust for all development and testing tasks, applying back end development skills to strengthen the test suite and ensure robust handling of resource types without introducing new production features or bug fixes.