What are the best practices for mocking in Node.js?

What are the best practices for mocking in Node.js?

Some best practices include using libraries like Jest or Sinon, keeping mocks simple, and ensuring they are isolated.

Can you explain why isolation is important in mocking?

Isolation helps ensure that tests are not dependent on external factors, making them more reliable and easier to debug.

What are some common pitfalls to avoid when mocking?

Common pitfalls include over-mocking, which can lead to tests that don't reflect real-world scenarios, and not updating mocks when the code changes.

How do I choose between Jest and Sinon for mocking?

Choose Jest for a more integrated testing experience with built-in mocking, while Sinon is great for more complex scenarios requiring fine control.