Worked on stabilizing the Spanner-related test suite in the GoogleCloudPlatform/spring-cloud-gcp repository, focusing on improving reliability and feedback in continuous integration. Addressed flaky tests by replacing brittle exact-match assertions with regex and partial matches, ensuring that tests validated intended exception behavior rather than relying on specific error message formatting. This approach reduced false negatives and improved maintainability, particularly in tests involving null field names. Utilized Java, the Spring Framework, and test-driven development practices to implement these changes. The work accelerated release readiness by enhancing CI reliability and streamlining the feedback cycle, though no new features were added during this period.