unit-testing-patterns

Structure unit tests using the AAA pattern, fixture-based data generation, and mocking for external dependencies to ensure reliability and maintainability. This approach enforces clear, independent test cases across functions, classes, and asynchronous flows.

Use factories and fixtures to generate consistent test data for deterministic unit tests. This pattern provides structured test data and data builders across modules, preventing fragile tests caused by inconsistent or hardcoded inputs.

Apply the TDD workflow by writing tests before implementation to drive module design. Use factory helpers to generate test data and establish repeatable, well-structured test scaffolding for new code.

Mock external dependencies by isolating the target function or class and replacing external calls with controlled mocks. This enforces best practices and ensures your unit tests remain clear, independent, and reliable.

Yes, you can test asynchronous flows using these unit testing patterns. The scope covers testing approaches for pure functions, class behavior, async flows, and parameterized tests to ensure comprehensive coverage.