Book Image

Practical Test-Driven Development using C# 7

By : John Callaway, Clayton Hunt
Book Image

Practical Test-Driven Development using C# 7

By: John Callaway, Clayton Hunt

Overview of this book

Test-Driven Development (TDD) is a methodology that helps you to write as little as code as possible to satisfy software requirements, and ensures that what you've written does what it's supposed to do. If you're looking for a practical resource on Test-Driven Development this is the book for you. You've found a practical end-to-end guide that will help you implement Test-Driven Techniques for your software development projects. You will learn from industry standard patterns and practices, and shift from a conventional approach to a modern and efficient software testing approach in C# and JavaScript. This book starts with the basics of TDD and the components of a simple unit test. Then we look at setting up the testing framework so that you can easily run your tests in your development environment. You will then see the importance of defining and testing boundaries, abstracting away third-party code (including the .NET Framework), and working with different types of test double such as spies, mocks, and fakes. Moving on, you will learn how to think like a TDD developer when it comes to application development. Next, you'll focus on writing tests for new/changing requirements and covering newly discovered bugs, along with how to test JavaScript applications and perform integration testing. You’ll also learn how to identify code that is inherently un-testable, and identify some of the major problems with legacy applications that weren’t written with testability in mind. By the end of the book, you’ll have all the TDD skills you'll need and you’ll be able to re-enter the world as a TDD expert!
Table of Contents (21 chapters)
Title Page
Packt Upsell
Foreword
Contributors
Preface
4
What to Know Before Getting Started
Index

A quick introduction to JavaScript IDEs


While you don't need an IDE (Integrated Development Environment) per se, you will need a text editor. Why not have a text editor that does a little bit of the heavy lifting for you? There are, essentially, two types of IDEs available for JavaScript development. The first kind is really more of a text editor than anything else, whereas the second kind is a full-blown editor with compiling and source control built in.

While you can work on JavaScript with only a simple text editor and a console/Terminal window, we recommend using something with at least a little more power.

Visual Studio Code

Visual Studio Code, as described in the C# section, is a lightweight editor based on the Electron framework and developed in TypeScript, a language designed by Microsoft to extend JavaScript with static types. TypeScript compiles to JavaScript, so ultimately Visual Studio Code is a JavaScript application.

Why Visual Studio Code?

For working with JavaScript, there are...