Eka developed a feature for the pulumi/opentofu repository that enabled function calls within test variable definitions in the OpenTofu CLI. By expanding the evaluation context to include available functions such as upper and join, Eka allowed users to create more dynamic and expressive test data, reducing the need for manual setup and supporting richer test scenarios. The implementation involved Go and HCL, leveraging skills in CLI development, configuration languages, and testing. This work addressed a reliability issue with function calls in test variable blocks, resulting in more robust and flexible test setups for the OpenTofu project during July 2025.