Worked on the kunj-bhuva/okk repository to enhance project quality by expanding unit test coverage and improving documentation. Focused on backend development using JavaScript, Node.js, and Jest, comprehensive unit tests were implemented for core models and controllers, including Donation, Donor, NGO, Admin, Billing, Payment, and Review. These tests validated data integrity, logic execution, and integration with MongoDB via Mongoose, ensuring robust service and database interactions. Additionally, documentation was updated to clarify project scope and outstanding tasks, supporting safer future feature delivery and smoother onboarding. No code changes were introduced beyond testing and documentation, emphasizing maintainability and project clarity.