During May 2025, X. Yang focused on enhancing the integration test suite for the LabKey/platform repository, specifically targeting cross-folder import scenarios. Yang updated backend TypeScript tests to accurately validate error handling when importing data with invalid entries, ensuring the test asserts the correct error message without introducing production code changes. This approach improved test reliability and coverage, supporting safer future refactoring and reducing risk to the main application. By documenting the test adjustment in the commit history, Yang facilitated easier future code reviews. The work demonstrated depth in backend development and integration testing, emphasizing quality assurance and maintainability over new features.