Worked on the xupefei/delta repository to enhance the maintainability and clarity of the DeltaFormatSharingSourceSuite test suite. Focused on refactoring the test code to improve readability and organization while ensuring that all existing streaming verification remained intact. This effort did not introduce new features or bug fixes but instead reduced the maintenance burden and lowered the risk of regressions for future development. Utilized Scala and Spark to restructure the test suite, applying best practices in test organization and version control. The changes support faster onboarding for new contributors and lay a foundation for more efficient future iterations within the Delta Lake ecosystem.