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

In this chapter, I have walked you through a lot of details related to using mock servers in Postman. You saw how to set up a mock server in Postman, but we didn't stop there. I then showed you how to create useful mock responses using examples. I walked you through how to use the default examples that Postman creates for you when you create a mock server from a specification file. I also helped you to learn how to create custom examples that do exactly what you need them to do. I then showed you some powerful options that you can use in these examples including things such as dynamic variables and responses that are specific to URL parameters. I also made sure that you understood how Postman finds the examples that it will respond with so that you can be sure that you will get back the response you are looking for when you make a request to a mock server.

After showing you how to create a mock server that gives back good responses, I dove into the different ways that...