Worked on the Shopify/rails repository to enhance the reliability of ActiveRecord migration scripts by introducing regression tests for the say and say_with_time methods. Focused on verifying output formatting and timing across various parameters, this effort improved the predictability of migration behavior and strengthened the continuous integration feedback loop. By expanding test coverage for migration output, the work enabled earlier detection of potential regressions and reduced the risk of silent failures during production migrations. Utilized Ruby and Ruby on Rails for back end development, emphasizing robust test design to provide clearer signals to developers and support safer, more maintainable migration processes.