During December 2024, Tianyu Huang enhanced the test infrastructure for SafeIntLib by developing robust mocking solutions across the acidanthera/audk and microsoft/mu_basecore repositories. He introduced Google Mock-based testing support for SafeIntLib in MdePkg, creating new mock headers and sources and integrating them into the build system. In mu_basecore, he implemented a dedicated SafeIntLib mock and updated the INF and DSC files to streamline test integration. Working primarily in C and C++, Tianyu focused on build system configuration, embedded systems development, and unit testing, enabling safer refactoring and earlier regression detection for critical integer arithmetic code paths.