Worked on the hyperledger-iroha/iroha repository to expand test coverage for permission management within the Iroha CLI. Developed a comprehensive testing suite in Python, focusing on grant and revoke permission flows, including edge cases such as invalid permissions, non-existent accounts, and revocation attempts without proper rights. The approach emphasized CLI automation and robust testing practices, ensuring that both positive and negative scenarios were thoroughly validated. While no production bugs were addressed during this period, the work enhanced the reliability and maintainability of permission-related features, contributing to improved CI readiness and long-term risk mitigation for the project’s permission handling logic.