Worked on enhancing PostgreSQL binary protocol handling within the apache/shardingsphere repository, focusing on improving the reliability of binary data processing. The approach centered on refactoring existing test cases and introducing new unit tests for reading and writing boolean, integer, and timestamp values, all implemented in Java. By expanding test coverage and emphasizing correctness, the work reduced the risk of data misinterpretation in binary mode and enabled faster detection of protocol-related issues. This effort strengthened the test suite for database protocol handling, supporting safer upgrade paths for deployments that rely on PostgreSQL compatibility and contributing to more robust system maintenance practices.