Integration Testing API Endpoints

Welcome! In this lesson, we'll dive into integration testing for Node.js API endpoints. Unlike unit tests (which test small, isolated pieces of code), integration tests verify that different parts of your application work together as expected.

For APIs, this means ensuring your endpoints correctly handle requests, interact with databases or other services, and return the right responses.

Your API is the main way external clients interact with your backend. Robust integration tests ensure:

• Endpoints respond with correct HTTP status codes.
• Data sent to the API is processed and stored properly.
• The API returns expected data formats (e.g., JSON).
• Different components (like routing, middleware, database) integrate seamlessly.

This helps catch bugs early that unit tests might miss.