Thumilan implemented automated code coverage reporting across the wso2-extensions/identity-governance, identity-organization-management, and identity-event-handler-notification repositories, focusing on improving CI visibility and QA insights. He designed GitHub Actions workflows in YAML and Bash to generate and upload coverage reports to Codecov, introducing separate jobs for OIDC conformance, FAPI conformance, and integration tests. Thumilan refined Codecov configuration to support granular unit-test coverage flags and per-target reporting while maintaining project and patch coverage controls. His work standardized PR workflows and coverage metrics across repositories, enabling faster feedback loops, reproducible results, and data-driven quality decisions within the automation and CI/CD pipeline.