Yuechen Chi enhanced the usagov/usagov-2021 repository by implementing a testing infrastructure upgrade focused on enabling Drupal site testing with user-generated content. Leveraging PHP, JSON, and Composer for dependency management, Yuechen integrated the weitzman/drupal-test-traits package into the project’s composer.lock, expanding the repository’s test coverage and supporting future test-driven development. The work centered on improving testability and reducing regression risk, rather than addressing existing bugs. All changes were clearly documented and committed, demonstrating a methodical approach to infrastructure improvement. This contribution deepened the project’s technical foundation, particularly in Drupal development and automated testing using PHPUnit.