Contributed targeted quality improvements to the godotengine/godot repository by implementing comprehensive unit test coverage for the Sky class. Focused on validating key behaviors such as the constructor, radiance size, process mode, and material handling, the work established a robust baseline for regression protection in the rendering pipeline. Leveraging C++ and game development expertise, the developer designed tests that integrate seamlessly with the existing codebase, supporting safer future refactoring. The approach emphasized maintainability and traceability, with well-documented test cases and clear commit history. This effort enhanced code reliability and demonstrated a disciplined workflow centered on unit testing and code quality.