Book Image

Scala Test-Driven Development

By : Gaurav Sood
Book Image

Scala Test-Driven Development

By: Gaurav Sood

Overview of this book

Test-driven development (TDD) produces high-quality applications in less time than is possible with traditional methods. Due to the systematic nature of TDD, the application is tested in individual units as well as cumulatively, right from the design stage, to ensure optimum performance and reduced debugging costs. This step-by-step guide shows you how to use the principles of TDD and built-in Scala testing modules to write clean and fully tested Scala code and give your workflow the change it needs to let you create better applications than ever before. After an introduction to TDD, you will learn the basics of ScalaTest, one of the most flexible and most popular testing tools around for Scala, by building your first fully test-driven application. Building on from that you will learn about the ScalaTest API and how to refactor code to produce high-quality applications. We’ll teach you the concepts of BDD (Behavior-driven development) and you’ll see how to add functional tests to the existing suite of tests. You’ll be introduced to the concepts of Mocks and Stubs and will learn to increase test coverage using properties. With a concluding chapter on miscellaneous tools, this book will enable you to write better quality code that is easily maintainable and watch your apps change for the better.
Table of Contents (16 chapters)
Scala Test-Driven Development
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface

IDE


We will be using IntelliJ IDEA as the IDE for all of the examples and exercises from this point onwards. Eclipse can also be used with equal ease, and if that is your preference, then you can use that.

IDE gives us some advantages over writing out test and application code in a plain text editor, such as code completion, syntax checking, formatting, project management, and a visual representation of the test execution.

Note

Community edition of IntelliJ IDEA can be freely downloaded from: https://www.jetbrains.com/idea/download/.

After installation, install the Scala plugin for IntelliJ. Navigate to Configure | Plugins, from the initial IntelliJ IDEA welcome screen, which will take you to the plugins dialog box. Here, you can search for already installed plugins or search for and install new plugins. If you are using IntelliJ version 15 or higher, then the Scala plugin will already be installed. After installation, IntelliJ will ask for a restart:

Plugin management screen in IntelliJ