1. REST API Testing using Postman Reliable API calls are critical to any decoupled application. Whether it a simple configuration change to an entity or updating the Drupal core, both of them can alter the API response and lead to application-breaking changes on the front-end. An API test suite can watch out for these API breaking changes by running a slew of tests against your endpoint. And when you need to create an API test suite, Postman delivers. 1.1. Why Postman tool? Postman is a simple GUI for sending HTTP requests and viewing responses. It is built upon an extensive set of power tools, which are incredibly easy to use. Postman helps you perform a variety of functions ranging from Organizing requests into collection and folders, Sharing common values across requests with environment variables, Scripting tests with the built-in node.js based runtime, And at last, automating it all using Postman’s very own CLI — Newman. 1.2. Install native Postman Application Pos