Code fix tests

As with the analyzer, you can create tests specific to code fixes. It uses a different verifier than the analyzer: CodeFixVerifier. Let’s get started:

1. Add a file called CodeFixTests within the ExceptionShouldNotBeSuffixed folder in the Roslyn.Extensions.Test project folder. Then add a file called CodeFixTests.cs and add the following content to it:

   namespace Roslyn.Extensions.CodeAnalysis
     .ExceptionShouldNotBeSuffixed;
   using Xunit;
   using Verify = Microsoft.CodeAnalysis.Csharp
     .Testing.XUnit.CodeFixVerifier<Analyzer, CodeFix>;
   public class CodeFixTests
   {
   }

As you did with the analyzer tests, you used a verifier. For code fixes, it is a different type of verifier: CodeFixVerifier.

The CodeFixVerifier verifier needs two generic arguments, the first one representing the analyzer and the second representing the code fix being tested.

2. Add the following test method to the CodeFixTests class:

   [Fact]
   public async Task...