During March 2025, Yifeng Shi enhanced the SamSike/OpenDrop_OP repository by developing a comprehensive unit test suite for the profile extraction module. Focusing on core functions such as extract_drop_profile, detect_edges, and prepare_hydrophobic, Yifeng used Python, Pytest, and Mocking to validate functionality, error handling, and edge cases. This targeted approach improved test coverage, enabling safer refactoring and reducing release risk. By leveraging NumPy and OpenCV within the testing framework, Yifeng’s work strengthened the project’s quality assurance and maintainability. The depth of the test suite established a foundation for more reliable data processing and supported ongoing test-driven development practices.