During January 2025, Gfl56326_local focused on enhancing the test infrastructure for the mantidproject/mantid repository, specifically targeting the PolarizationCorrectionsHelpers module. They expanded and refactored the unit test suite using C++, introducing new test cases to improve the robustness and validation of helper functions involved in polarization correction workflows. Their work emphasized maintainability and provided clearer regression signals, supporting future development and reducing risk in this critical area. Although no major bugs were addressed, the depth of their contribution lay in strengthening test coverage and ensuring the codebase’s reliability, with a technical emphasis on C++ and systematic unit testing practices.