Book Image

Writing API Tests with Karate

By : Benjamin Bischoff
Book Image

Writing API Tests with Karate

By: Benjamin Bischoff

Overview of this book

Software in recent years is moving away from centralized systems and monoliths to smaller, scalable components that communicate with each other through APIs. Testing these communication interfaces is becoming increasingly important to ensure the security, performance, and extensibility of the software. A powerful tool to achieve safe and robust applications is Karate, an easy-to-use, and powerful software testing framework. In this book, you’ll work with different modules of karate to get tailored solutions for modern test challenges. You’ll be exploring interface testing, UI testing as well as performance testing. By the end of this book, you’ll be able to use the Karate framework in your software development lifecycle to make your APIs and applications robust and trustworthy.
Table of Contents (15 chapters)
1
Part 1:Karate Basics
7
Part 2:Advanced Karate Functionalities

Understanding JSONPath and XPath

Up until now, we have always used the basic syntax to traverse JSON data and access certain elements and values within it. In this section, we will look at JSONPath and XPath, which offer more flexibility when dealing with JSON and XML respectively.

This is not meant as a reference but rather a demonstration of how these two approaches work. You are encouraged to learn more about these as they offer a lot of functionality in themselves!

Working with XPath

Let’s look at XPath first as JSONPath is loosely based on it.

XPath details

XPath is a language to parse XML structures. It considers an XML document as a node tree of elements, attributes, and text and can find XML parts in children and parent nodes. More information about XPath can be found here:

https://www.w3.org/TR/1999/REC-xpath-19991116/

We will use this XML structure within a Karate test scenario:

Scenario: Xpath
  * def data =
  "&quot...