Ethan Cooper expanded automated test coverage for the COSC381-2024Fall/Todo-List-CLI repository by developing comprehensive unit tests for the TodoList feature’s delete_task functionality. Using Python and Pytest, he implemented test-driven development practices to validate task deletion from both populated and empty lists, as well as handling out-of-range indices. His work included creating a dedicated test file and updating test titles to improve readability and maintainability. Although no production bugs were fixed during this period, Ethan’s contributions enhanced the reliability of the codebase, reduced regression risk, and laid a stronger foundation for future development through improved automated testing practices.