Testing Strategy

• Test Pyramid: More unit and widget tests, fewer integration tests. Unit tests are fastest and cheapest.
• Mirror Test Rule: 100% logic and widget coverage. No code without a test.
• Mirror Organization: Test files MUST strictly mirror the lib/ directory structure and end with _test.dart.
• Coverage Targets: Target 100% logic coverage for domain and bloc layers.
• Test Independence: Each test MUST be independent. No shared mutable state between tests.

Unit Testing

• Follow the Arrange-Act-Assert (Given-When-Then) convention for clear and maintainable tests
• Use mocks for dependencies except for lightweight third-party services
• Test business logic in isolation from the UI
• For tests, ensure to create 5 to 8 tests for logical operations with real scenarios
• Mocking Protocol: Use mocktail for all dependency mocking. STRICTLY prohibit using real implementation dependencies in unit tests.
• Pure Logic: Business logic inside BLoCs or UseCases should be extracted to static pure functions for 100% unit test coverage.

Widget Testing