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

Switching to xUnit


MSTest has long shipped with Visual Studio. There are a few other options when it comes to testing frameworks for C# and .NET. Many of these frameworks have feature parity and differ only slightly in their choices of attributes, assertions, and exception handling. Among the top contenders for testing frameworks is xUnit. Many developers actually prefer this to MSTest and would argue that it is more feature-rich and has stronger community support. Arguments aside, we'll be using xUnit for our C# and .NET tests from here on out.

Feel free to stick with MSTest if you prefer. Just know that you'll need to account for the semantic differences (such as TestMethod vs Fact) and slight differences in functionality.

Code katas

What is a code kata? Code katas are nothing more than repeatable exercises. Generally, these exercises are meant to take no more than 20 minutes to complete. Most code katas are directed at a specific classification of a problem to solve. We'll be utilizing the...