Nock is a powerful HTTP mocking library for Node.js. It allows you to intercept and mock HTTP requests, making testing easier and more reliable. Instead of making real HTTP calls, nock intercepts them and returns predefined responses. This allows for isolated unit and integration tests, independent of external services. Nock's API provides granular control over request matching and response definition, supporting various scenarios like status codes, headers, and body content. It's a crucial tool for developing robust applications that interact with APIs.
