Worked on the COSC381-2024Fall/Todo-List-CLI repository, focusing on enhancing the reliability of the TodoList’s alphabetical sorting feature. Developed and delivered automated tests in Python, applying test-driven development and unit testing methodologies to validate that the list_tasks_alphabetic method sorts tasks correctly. The tests covered case-insensitive sorting, numeric prefixes, and non-English characters, ensuring robust handling of diverse input. By expanding test coverage for this core functionality, the work improved the maintainability and safety of future code refactors. This approach increased overall code quality and provided greater confidence in the application’s behavior as it evolves and scales over time.