What is the difference between unit tests and integration tests?

What is the difference between unit tests and integration tests?

Unit tests focus on individual components of the code, while integration tests check how those components work together.

Can you give me examples of each type of test?

Sure! A unit test might check a single function's output, while an integration test could verify that a user login process works end-to-end.

When should I use unit tests over integration tests?

Use unit tests during development for quick feedback on small parts, and integration tests to ensure overall system functionality.

How do I write effective unit tests?

Effective unit tests should be isolated, fast, and cover various scenarios, including edge cases.