Worked on modernizing the testing framework for the googleapis/google-cloud-php repository, focusing on improving test reliability and continuous integration stability. The main contribution involved refactoring test cases to adopt the modern PHPUnit\Framework\TestCase namespace and upgrading PHPUnit to version 4.8.36. This transition away from deprecated PHPUnit_Framework_TestCase reduced maintenance overhead and ensured compatibility with current and future PHP versions. By leveraging PHP and PHPUnit, the work enhanced the reliability of the test suite, minimized CI flakiness, and made it easier for new contributors to onboard. The changes aligned the project’s testing infrastructure with contemporary unit testing practices.