Book Image

API Testing and Development with Postman

By : Dave Westerveld
1 (1)
Book Image

API Testing and Development with Postman

1 (1)
By: Dave Westerveld

Overview of this book

Postman enables the exploration and testing of web APIs, helping testers and developers figure out how an API works. With Postman, you can create effective test automation for any APIs. If you want to put your knowledge of APIs to work quickly, this practical guide to using Postman will help you get started. The book provides a hands-on approach to learning the implementation and associated methodologies that will have you up and running with Postman in no time. Complete with step-by-step explanations of essential concepts, practical examples, and self-assessment questions, this book begins by taking you through the principles of effective API testing. A combination of theory coupled with real-world examples will help you learn how to use Postman to create well-designed, documented, and tested APIs. You'll then be able to try some hands-on projects that will teach you how to add test automation to an already existing API with Postman, and guide you in using Postman to create a well-designed API from scratch. By the end of this book, you'll be able to use Postman to set up and run API tests for any API that you are working with.
Table of Contents (19 chapters)
1
Section 1: API Testing Theory and Terminology
6
Section 2: Using Postman When Working with an Existing API
13
Section 3: Using Postman to Develop an API

Setting up the API in Postman

As you can probably anticipate, the next thing I want you to do is to set this API up in Postman. Think of this as a review of the different things that you have learned about setting up APIs with Postman. I think that the best way to check whether you really know something isn't with a test or a quiz, but rather by getting you to do it. In this section, I will once again give you a challenge that I want you to work through on your own and then show you how I went about solving it.

Challenge – Add an API and mock server in Postman

For this challenge, I want you to take the specification file that you've made and import it into Postman. I want you to then set up an environment and a mock server for this API.

This challenge should be straightforward, but if you need to review how it should be done, you can look at Chapter 12, Creating and Using a Mock Server in Postman, to see how to do this. I will, of course, also show the solution...