backend-test

Test-driven development for backend API endpoints requires writing tests for happy paths, validation, edge cases, and status codes before implementation. This Skill drives that workflow by planning, implementing, and iterating until all tests pass.

Test-driven backend testing works with FastAPI, Django, Flask, and Express frameworks. The Skill provides framework-agnostic guidance that integrates with common testing patterns like pytest and jest to validate API endpoints and models.

You can run integration tests against a real database for backend APIs when credentials are available. This Skill emphasizes using a real database over mocks to validate true integration behavior and ensure models function correctly.

Testing authentication scenarios for protected API endpoints requires verifying access control with and without auth. This Skill supports authentication-aware testing to ensure protected endpoints correctly validate permissions and reject unauthorized requests.

The best way to ensure backend business logic meets requirements is enforcing test-first verification with comprehensive coverage. This Skill drives iterative refinement through test execution until API endpoints and business logic fully satisfy acceptance criteria.