How to automate REST API end-to-end tests in a CI environment with Postman and Newman

Postman is a great tool to explore REST APIs. You can build requests and try them out to get quick feedback. Then you can persist them as collections to make sure that the knowledge doesn't get lost. Newman, the CLI version of Postman, allows you to take it to the next level and transform a collection into a suite of automated end-to-end tests. This suite will run then in your CI tool of choice. In this article, I will explore the benefits of doing so and show you how to set it up.