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 wanted this entire chapter to work as a review and summary. Learning new things takes some time and looking at things from a few different angles can help to make the learning stick in the long term. I have taken you through worked examples of many of the concepts that I've covered in this book to help you get a solid understanding of them.

We've covered how to design an API, including how to think about and approach defining the actions and endpoints that an API should have. We also looked at how to think about the kind of inputs that the API might take.

After that, we looked at taking our design thoughts and codifying them into an OpenAPI specification file. In doing this, we went over some material that had already been covered in previous chapters, but we also learned about some additional advanced features of this specification, including things such as how to link together outputs from one part of the API that serve as inputs to other parts of the...