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Writing API Tests with Karate

Writing API Tests with Karate

By : Benjamin Bischoff
5 (8)
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Writing API Tests with Karate

Writing API Tests with Karate

5 (8)
By: Benjamin Bischoff
Buy this Book

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)
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Preface
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Preface
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Who this book is for
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What this book covers
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To get the most out of this book
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Download the example code files
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Download the color images
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Conventions used
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Get in touch
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Share Your Thoughts
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Download a free PDF copy of this book
1
Part 1:Karate Basics
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Part 1:Karate Basics
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2
Chapter 1: Introducing Karate’s Core Concepts
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Chapter 1: Introducing Karate’s Core Concepts
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Technical requirements
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What makes Karate stand out?
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BDD versus Karate
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Supported data types in Karate
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The JavaScript engine
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Java interoperability
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Summary
3
Chapter 2: Setting up Your Karate Project
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Chapter 2: Setting up Your Karate Project
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Technical requirements
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Installing Java
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Getting to know Karate standalone
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Preparing the IDE
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Setting up Karate projects with Maven
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The roles of the different Karate project files
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Summary
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Chapter 3: Writing Basic Karate Tests
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Chapter 3: Writing Basic Karate Tests
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Technical requirements
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Exploring the API under test
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Creating a new Karate project
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Calling endpoints and setting parameters
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Matching status codes and responses
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Using assertions and matchers on the response
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Making requests with payloads
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Using variables and data tables
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Using data tables
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Summary
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Chapter 4: Running Karate Tests
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Chapter 4: Running Karate Tests
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Technical requirements
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Running and debugging Karate tests through the IDE
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Running tests with Maven
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Running tests against different environments
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Running specific tests
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Filtering tests by tags
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Summary
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Chapter 5: Reporting and Logging
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Chapter 5: Reporting and Logging
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Technical requirements
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Configuring log options
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Using Karate’s built-in reports
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Configuring third-party report libraries
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Generating a Surefire report
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Using JUnit reports
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Summary
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Part 2:Advanced Karate Functionalities
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Part 2:Advanced Karate Functionalities
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Chapter 6: More Advanced Karate Features
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Chapter 6: More Advanced Karate Features
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Technical requirements
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Working with headers and cookies
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Using different configuration and run options
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Defining and using expressions with def
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Working with external files
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Understanding JSONPath and XPath
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Testing GraphQL
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Summary
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Chapter 7: Customizing and Optimizing Karate Tests
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Chapter 7: Customizing and Optimizing Karate Tests
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Technical requirements
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Using Karate hooks
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Defining and calling Java functions
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Using Karate as a mock server
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Making your tests more concise
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Summary
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Chapter 8: Karate in Docker and CI/CD pipelines
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Chapter 8: Karate in Docker and CI/CD pipelines
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Technical requirements
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Triggering Karate tests from shell scripts
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Running Karate tests in a Docker container
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Customizing our tests
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Integrating Karate tests into GitHub workflows
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Summary
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Chapter 9: Karate UI for Browser Testing
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Chapter 9: Karate UI for Browser Testing
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Technical requirements
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What Karate UI is for
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Writing a basic Chrome scenario
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Finding and interacting with elements
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Debugging UI tests
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Redirecting HTTP calls
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Summary
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Chapter 10: Performance Testing with Karate Gatling
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Chapter 10: Performance Testing with Karate Gatling
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Technical requirements
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What is Gatling?
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Setting up Karate Gatling
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Running Karate tests as performance tests
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Checking out Gatling reports
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Summary
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Index
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Index
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Why subscribe?
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Other Books You May Enjoy
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Other Books You May Enjoy
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Technical requirements

The code examples for this chapter can be found at https://github.com/PacktPublishing/Writing-API-Tests-with-Karate/tree/main/chapter02.

Disclaimer

In theory, you could use any text editor to write Karate tests, since they are simple text files at their core. However, using a real IDE makes development easier and more comfortable. We will not use any paid tools within this book in order to make this content available to you without any limitations.

You will require the following in this chapter:

  • A Java Development Kit (JDK) to develop and run tests (Karate requires version 8 or higher). We will see in the next section how to install it.
  • Maven to manage the dependencies of our Karate projects (it is possible to use Gradle as well, but we will mostly use Maven throughout this book, since setting up Karate projects is more streamlined). We will discuss how to install and set up Karate projects using Maven further on in this chapter.
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