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

This chapter has mostly been about working through an example of creating automated tests for a simple service, but it has taught a lot of lessons along the way. After learning about how to set up the testing site, you learned how to explore the API and find bugs in it. Once you were able to do that, we started to look at how you can automate tests. I gave you a challenge: creating a test automation suite for the test API. I hope you took the time to work through the challenge on your own and were able to learn a lot about what API test automation would look like.

I also walked you through an example of how I would have gone about solving the challenge. While going through my solution, you learned about how to set up collections in Postman in a way that organizes the requests so that they will be maintainable. You then learned some more about using environments to set up and share variables. I then walked you through creating tests for the different requests.

The tests...