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

Summary

I don't know about you, but I just love it when you can use a tool from the command line. Newman enables you to run Postman collections from the command line, and this opens up many possibilities. In this chapter, we have learned how to use Newman to run collections on the command line and how to leverage this to integrate API testing into build systems. Of course, to do this, you needed to learn how to install Newman, as well as Node.js, so that you can install it with npm.

We then walked through some of the options for running Newman and saw how to run a collection in Newman, as well as how to include an environment and event data file for data-driven testing. We also saw some of the powerful reporting capabilities in Newman. This included the options for using the built-in reporters that come with it, as well as installing and using external reporters that others have shared. We walked through an example of using the htmlextra reporter. There, we showed you how...