Understanding and implementing integration tests
Integration tests are an important component of a robust testing strategy and focus on the interactions between different parts of your application. Unlike unit tests, which isolate individual components, integration tests evaluate how these components work together as a cohesive system.
In the context of Express.js, integration tests ensure that routes, controllers, models, and databases interact seamlessly. They verify that data flows correctly between these components and that the application produces the expected outcomes.
Why are integration tests essential? They help prevent integration issues, which can often be complex and time-consuming to debug. By testing the interactions between components, you can catch potential problems early in the development cycle, reducing the risk of unexpected behavior in production.
Integration tests aren’t a replacement for unit tests. Unit tests focus on the correctness of individual...