Worked on enhancing the reliability of eBPF execution on Windows by expanding unit test coverage in the microsoft/ebpf-for-windows repository. Focused on Libbpf inner map key lookups, this developer implemented new C++ unit tests to verify that lookups using non-zero and nonexistent keys correctly fail and set errno as expected. The approach emphasized robust error handling and regression protection, ensuring that inner map operations behave predictably and issues are detected early in continuous integration. Leveraging skills in unit testing and eBPF, the work improved the maintainability of the test suite and contributed to more dependable inner map behavior in production environments.