FakeDB unit tests erroring

Question

I'm trying to get some unit tests running in my Sitecore environment, where I'm using FakeDB as the testing framework. I've added the relevant NuGet packages in my Visual Studio project (which are referred in the Installation wiki).

I believe I've set the project up correctly in terms of app.config and license.xml file, but after adding some additional missing dependencies I'm still getting an error running a simple unit test (which I copied/pasted from the FakeDB wiki):

[Fact]
public void HowToCreateSimpleItem()
{
  using (Sitecore.FakeDb.Db db = new Sitecore.FakeDb.Db
    {
      new Sitecore.FakeDb.DbItem("Home") { { "Title", "Welcome!" } }
    })
  {
    Sitecore.Data.Items.Item home = db.GetItem("/sitecore/content/home");
    Xunit.Assert.Equal("Welcome!", home["Title"]);
  }
} 

The error I'm getting:

Message: 
    System.MethodAccessException : Attempt by method 'Sitecore.FakeDb.Pipelines.ReleaseFakeDb.ResetSettings.Process(Sitecore.Pipelines.PipelineArgs)' to access method 'Sitecore.Configuration.Settings.Reset()' failed.
  Stack Trace: 
    (Object , Object )
    PipelineMethod.Invoke(Object argument)
    CorePipeline.Run(PipelineArgs args)
    DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain, Boolean failIfNotExists)
    DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain)
    DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args)
    Db.Dispose(Boolean disposing)
    Db.Dispose()
    Class1.HowToCreateSimpleItem() line 22

What am I missing here?

I'm using Sitecore 9.3, in case that's relevant.

Answer 1

First, I'd strongly recommend you avoid using FakeDb for Sitecore 9. It still works, but Sitecore 9 (even 8.2+) contains abstractions that makes FakeDb unnecessary. See this post for more information.

Regarding the error. Please ensure you referenced proper FakeDb version. For Sitecore 9.3 it should be FakeDb 3.0.0-alpha1 (see release notes).