api-testing

To test FastAPI endpoints with pytest and TestClient, you use pytest fixtures to set up the test environment and TestClient to simulate HTTP requests to your API routes. This approach validates route logic and database interactions through integration tests.

Yes, you can run Playwright browser tests for React and Next.js frontends. This skill uses Playwright to drive end-to-end browser flows, validating UI behavior and full user journeys across your frontend application layers.

The best way to structure unit and integration tests for a FastAPI backend is using pytest fixtures and mock data factories. Unit tests isolate business logic, while integration tests validate API routes and database interactions using TestClient.

Yes, you need the Playwright npm setup to run E2E tests locally. The skill requires standard tools including pytest, TestClient, and Playwright's npm setup to execute browser-driven tests locally and verify outcomes in CI.

You scaffold tests for new FastAPI endpoints or frontend pages using reusable fixtures, mock data factories, and authentication helpers. This accelerates test development by providing structured patterns for unit, integration, and E2E coverage.

Your API testing setup needs pytest fixtures and mock data factories to provide reusable test states and controlled data inputs. Fixtures manage test setup and teardown, while factories generate consistent mock data for validating endpoint behavior.