Chapter 10: Testing an Existing API

APIs come in all shapes and sizes. I have tried to give you a few different APIs to practice on as you've worked your way through this book. If you have worked through the various examples and challenges in this book, you should have a pretty good idea of how to use Postman with various types of APIs. In this chapter, though, I want to get you thinking about how you can use Postman to test an existing API.

Although new APIs are being created every day, the reality is that there are a lot of APIs out there that do not have adequate tests. You might be working on one of those APIs. Perhaps you are even working on an API that has been around for some time. I was recently working on a project that was under a tight deadline and, to meet this deadline, we had to leave some of the API tests until later. It can be a bit overwhelming to have to go back and add tests to an API that already exists and so, in this chapter, I want to walk you through...