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

Chapter 9. Testing JavaScript Applications

To get started testing in JavaScript, we will need to create a ReactJS application and configure it for testing using the Mocha, Chai, Enzyme, and Sinon libraries.

These steps were discussed in detail in Chapter 3Setting up the JavaScript Environment, so here, we will simply walk through the steps and not explain them in detail.

The goals for this chapter are:

  • Create the Speaker Meet React application
  • Talk through our plan of attack for testing the application:
    • What is our approach?
    • What parts of the app can we even test?
    • What part of the app do we start with?
  • Write tests and complete a couple of features for the application:
    • Speaker listing
    • Speaker detail

Once this chapter is finished, you should be capable of unit-testing any  React-based application.