这是我的例子:[TestMethod]publicvoidNewAction_should_return_IndexAction(){NewViewModelviewModel=newNewViewModel(){Name="JoséInácioSantosSilva",Email="joseinacio@joseinacio.com",Username="joseinacio"};//IsUserRegisteredisusedtovalidateUsername,Usernameisunique._mockAuthenticationService.Setup(x=>x.IsUse