如何使用OAuth授权服务器提供程序对方法进行单元测试

Question

在我的代码中，我正在解决以下autofac依赖关系。

public class OAuthTokenProvider: OAuthAuthorizationServerProvider
{        
    private readonly IContainer _container;

    public OAuthTokenProvider()
    {
        _container = BuildContainer(); 
    }

     public static IContainer BuildContainer()
        {
        var builder = IocConfig.RegisterTypes(new ContainerBuilder());           
        return builder.Build();
    }

    public async Task<AuthenticationTicket> CreateAuthenticationTicket(string authenticationType, string username, string clientId)
    {
        using (var scope = _container.BeginLifetimeScope())
        {
            var userService = scope.Resolve<IUserService>();

            var user = await userService.FindByNameAsync(username);

           // code


        }
    }

}

我正在尝试使用NUnit / MOQ框架对单元CreateCreateTicket方法进行如下测试

   [TestMethod]
    public async Task Test_Validating_A_Valid_Authentication_Request()
    {
        var prov = new OAuthTokenProvider();
        var cb = new ContainerBuilder();
        var userServiceMock = new Mock<IUserService>().Object;
        cb.RegisterInstance(userServiceMock).As<IUserService>();            
        cb.Build();

    }

我不确定如何像用户服务和逻辑单元测试这样的依赖关系。有什么想法吗？