How to automate API tests with Postman

APIs are essential for communication between software components, making rigorous testing crucial to ensure application reliability and predictability. This article explores the process of writing automated functional and integration tests for APIs, utilizing Postman to create and manage these tests, and integrating them into a CI/CD pipeline with Newman and GitHub Actions. The guide provides a step-by-step approach to setting up Postman for writing and running tests, creating a backend server with Node.js and Koa to handle API requests, and automating the testing workflow through GitHub Actions. Despite its capabilities, Postman has limitations, such as challenges in testing APIs that depend on external services and difficulties in reusing code across different environments. Nevertheless, Postman remains a valuable tool for API testing, offering comprehensive features for building, testing, documenting, and mocking APIs.

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