Testing — Next.js Full Stack Roadmap

Ensuring the Next.js stack app works correctly and stays reliable

Steps in Testing

Testing Fundamentals — advanced · Unit, integration and end-to-end testing — what to test and why
Unit Testing with Jest/Vitest — advanced · Writing and running unit tests, mocks and assertions
Testing Components (React Testing Library) — advanced · Testing Client Components with React Testing Library and mocking Server Components
Testing Route Handlers & Server Actions — advanced · Writing tests for Next.js API routes and Server Actions
End-to-End Testing (Playwright/Cypress) — advanced · Simulating real user flows across the whole application