Worked on the flutter/flutter repository to streamline the testing infrastructure by refactoring widget tests for improved stability and efficiency. Focused on replacing MaterialApp with TestWidgetsApp and removing unnecessary imports, which reduced test boilerplate and minimized dependencies. This approach eliminated the reliance on Material components in tests such as reassemble_test.dart and page_storage_test.dart, directly addressing code hygiene and maintenance concerns. Leveraged Dart and Flutter, with an emphasis on unit and widget testing, to ensure all tests passed post-refactor. The work contributed to more reliable continuous integration, faster feedback cycles, and easier onboarding for contributors by simplifying the test environment.