You have chosen to generate tests for a type that is marked as Friend, or Internal. Would you like to add the InternalsVisibleTo ...

You have chosen to generate tests for a type that is marked as Friend, or Internal. Would you like to add the InternalsVisibleTo attribute to project '{0}'?

If your source project has strong name signing enabled, you will need to also enable signing for your test project. If you do not, you will receive a compilation error.