During May 2025, contributed to the microsoft/mu_basecore repository by developing mock implementations for the SynchronizationLib and SmmSxDispatch2 protocols within MdePkg, focusing on enhancing the unit testing infrastructure for embedded systems. This work enabled isolated and robust unit tests for components dependent on these protocols, supporting safer refactoring and reducing long-term maintenance risk. The approach involved leveraging C and C++ to create testable mock libraries, integrating them with existing unit test suites to ensure compatibility and minimize regression. Emphasis was placed on embedded systems development, mocking, and UEFI development, with thorough documentation provided to support ongoing code quality improvements.