Testing ensures your application works correctly and prevents regressions when you make changes. A good test suite gives you confidence to deploy frequently.

Without tests, every deployment is risky. You can’t be sure that fixing one thing didn’t break something else. Tests catch regressions automatically.

1. Introduction — Testing types and strategies
2. Unit Testing — Testing individual functions and components
3. Integration Testing — Testing features end-to-end
4. E2E Testing — Testing complete user flows
5. Testing Best Practices — Writing maintainable tests

• Write unit tests for functions and components
• Write integration tests for pages and API routes
• Set up end-to-end tests with Playwright
• Follow testing best practices for Next.js

• Monitoring Module
• Deployment Module