Vladyslav Stsiatsko developed a targeted server testing suite for the bitcoin-sv/arc repository, focusing on the Blocktx server’s CurrentBlockHeight, Health, and ClearBlocks methods. Using Go and leveraging backend development and testing skills, Vladyslav implemented mocks to isolate server logic and validate interactions with the message queue and storage components. The Health tests specifically checked message queue connection status and timestamp handling, improving observability and runtime monitoring. This work established a robust foundation for future test coverage, reduced production risk by catching regressions early, and enhanced the reliability of release cycles, reflecting a thoughtful and methodical engineering approach.