Unit Testing vs Integration Testing

If you're building serious software, you need tests. But not all tests are the same.

\> Unit Tests
Test small, isolated pieces (usually functions).
Fast to run. Easy to debug.
Good for catching logical errors early.

\> Integration Tests
Test how different parts of your app work together.
Slower, but critical for real-world behavior.
Catch issues like API failures, DB errors, auth problems.

Summary:
Start with unit tests to catch bugs early.
Use integration tests to ensure everything works in harmony before you ship.

🎯 Don’t just write tests, write meaningful ones.