This Opensource application follows the Clear Architecture approach with TDD - Test Driven Development approach.
Source Code: https://github.com/smeetbhatt1/number_trivia_app
Thank you note:
- Reso Coder [https://resocoder.com/flutter-clean-architecture-tdd/]
- Aditya Rohman [https://betterprogramming.pub/flutter-clean-architecture-test-driven-development-practical-guide-445f388e8604]