Professional C# and .NET, 2021st Edition

23Tests

WHAT'S IN THIS CHAPTER?

• Performing unit tests with xUnit.net
• Determining code coverage
• Using a mocking library
• Performing integration testing with ASP.NET Core

CODE DOWNLOADS FOR THIS CHAPTER

The source code for this chapter is available on the book page at www.wiley.com. Click the Downloads link. The code can also be found at https://github.com/ProfessionalCSharp/ProfessionalCSharp2021 in the directory 2_Libs/Tests.

The code for this chapter is divided into the following major examples:

• UnitTestingSample
• MockingSample
• ASPNETCoreSample

All the samples have nullable reference types enabled.

OVERVIEW

Application development is becoming agile. When using waterfall process models to analyze the requirements, it's not unusual that you design the application architecture, do the implementation, and then find out as the solution is ready that you built an application that is not needed by the user. Software development becomes agile with faster release cycles and early participation of the end users. Just take a look at Windows 10: with millions of Windows insiders who give feedback to early builds, updates happen every few months or even weeks. There was one special week during the beta program of Windows 10 when Windows insiders received three builds of Windows 10 within one week. Windows 10 is a huge program, but Microsoft managed to change development in a big way. Also, if you participate in the open-source project of .NET, you can get nightly builds ...