Use case – automating functional tests

In this section, we will add a simple functional test to the ASP.NET Core test project of Chapter 18, Testing Your Code with Unit Test Cases and TDD. Our test approach is based on the Microsoft.AspNetCore.Mvc.Testing and AngleSharp NuGet packages. Please make a new copy of the whole solution.

The test project already references the ASP.NET Core project under test and all the required xUnit NuGet packages, so we need to add just the Microsoft.AspNetCore.Mvc.Testing and AngleSharp NuGet packages.

Now, let's add a new class file called UIExampleTest.cs. We need using statements to reference all the necessary namespaces. More specifically, we need the following:

• using PackagesManagement;: This is needed to reference your application classes.
• using Microsoft.AspNetCore.Mvc.Testing;: This is needed to reference the client and server classes.
• using AngleSharp; and using AngleSharp.Html.Parser;: These are needed...