Book Image

C# and .NET Core Test Driven Development

By : Ayobami Adewole
Book Image

C# and .NET Core Test Driven Development

By: Ayobami Adewole

Overview of this book

This book guides developers to create robust, production-ready C# 7 and .NET Core applications through the practice of test-driven development process. In C# and .NET Core Test-Driven Development, you will learn the different stages of the TDD life cycle, basics of TDD, best practices, and anti-patterns. It will teach you how to create an ASP.NET Core MVC sample application, write testable code with SOLID principles and set up a dependency injection for your sample application. Next, you will learn the xUnit testing framework and learn how to use its attributes and assertions. You’ll see how to create data-driven unit tests and mock dependencies in your code. You will understand the difference between running and debugging your tests on .NET Core on LINUX versus Windows and Visual Studio. As you move forward, you will be able to create a healthy continuous integration process for your sample application using GitHub, TeamCity, Cake, and Microsoft VSTS. By the end of this book, you will have learned how to write clean and robust code through the effective practice of TDD, set up CI build steps to test and build applications as well as how to package application for deployment on NuGet.
Table of Contents (11 chapters)

xUnit.net theory attribute for creating data-driven tests

In xUnit.net, data-driven tests are known as theories. They are tests decorated with the Theory attribute. When a test method is decorated with the Theory attribute, it must additionally be decorated with a data attribute, which will be used by the test runner to determine the source of the data to be used in executing the test:

[Theory]
public void Test_CalculateRates_ShouldReturnRate()
{
// test not implemented yet
}

When a test is marked as data theory, the data fed into it from the data source is directly mapped to the parameters of the test method. Unlike the regular test decorated with the Fact attribute, which is executed only once, the number of times a data theory is executed is based on the available data rows fetched from the data source.

At least one data attribute is required to be passed as the test method...