ASP.NET 模拟错误对象引用未设置为对象的实例

如何解决ASP.NET 模拟错误对象引用未设置为对象的实例

在 ASP.NET 中运行测试时出现错误。我所有的其他测试工作正常。这是我在控制器中的代码：

public IActionResult CreateTreatment(TreatmentViewModel treatmentViewModel)
{
    treatmentViewModel.animal = _animalRepository.GetById(treatmentViewModel.animal.ID);
    
    if (treatmentViewModel.animal.PassingAwayDate != null)
    {
        ModelState.AddModelError(string.Empty,"This animal has passed away");
    }

    Animal newAnimal = _animalRepository.GetById(treatmentViewModel.animal.ID);       

    if (treatmentViewModel.animal.Age == 0)
    {
        //Animal newAnimal = _animalRepository.GetById(treatmentViewModel.animal.ID);
        DateTime date1 = (DateTime)newAnimal.BirthDate;
        var date2 = DateTime.Now;

        var monthscalculated = (date1.Year - date2.Year) * 12 + date2.Month - date1.Month;
        TimeSpan dayscalculated = date2 - date1;

        var totaldays = dayscalculated.TotalDays;

        if (monthscalculated < 6
            && ((int)treatmentViewModel.Treatment.TreatmentType == 0
            || (int)treatmentViewModel.Treatment.TreatmentType == 1)
            && treatmentViewModel.Treatment.AgeRequirement < 6 && totaldays < 180)
        {
            ModelState.AddModelError(string.Empty,"You cannot do this treatment");
        }
    }        

    if (ModelState.IsValid)
    {
        Treatment newTreatment = treatmentViewModel.Treatment;

        if ((int)treatmentViewModel.Treatment.TreatmentType == 0 || (int)treatmentViewModel.Treatment.TreatmentType == 1)
        {
            {
                var animal = _animalRepository.GetById(treatmentViewModel.animal.ID);
                animal.NeuteredOrSterilized = true;
                _animalRepository.UpdateById(animal);
            }
        }
        if ((int)treatmentViewModel.Treatment.TreatmentType == 3)
        {
            Comment newComment = new Comment();
            newComment.CommentString = "Operation";

            CommentViewModel addCommentViewModel = new CommentViewModel();
            addCommentViewModel.Comment = newComment;

            addCommentViewModel.AnimalId = treatmentViewModel.animal.ID;
           
            _commentRepository.AddComment(addCommentViewModel.Comment,addCommentViewModel.AnimalId,User.Identity.Name);
        }
        if ((int)treatmentViewModel.Treatment.TreatmentType == 5)
        {
            Comment newComment = new Comment();
            newComment.CommentString = "Euthanasia";

            CommentViewModel addCommentViewModel = new CommentViewModel();
            addCommentViewModel.Comment = newComment;

            addCommentViewModel.AnimalId = treatmentViewModel.animal.ID;
            _commentRepository.AddComment(addCommentViewModel.Comment,User.Identity.Name);
        }
        if ((int)treatmentViewModel.Treatment.TreatmentType == 4)
        {
            Comment newComment = new Comment();
            newComment.CommentString = "Chipping GUID: " + Guid.NewGuid();

            CommentViewModel addCommentViewModel = new CommentViewModel();
            addCommentViewModel.Comment = newComment;

            addCommentViewModel.AnimalId = treatmentViewModel.animal.ID;
            _commentRepository.AddComment(addCommentViewModel.Comment,User.Identity.Name);
        }
        _treatmentRepository.AddTreatment(newTreatment,treatmentViewModel.animal.ID);

        return View("Thanks");
    }
    else
    {
        return View(treatmentViewModel);
    }
}

这是我在模拟测试中的代码。在这里我看看如果我创建一个操作处理它是否会发表评论。

public void BR_4_Explanation_in_treatment_operation()
{
    // Arrange
    var loggerMock = new Mock<ILogger<HomeController>>();
    var animalRepoMock = new Mock<IAnimalRepository>();
    var residenceRepoMock = new Mock<IResidenceRepository>();
    var treatmentRepoMock = new Mock<ITreatmentRepository>();
    var clientapplicationRepoMock = new Mock<IClientAnimalApplicationRepository>();
    var commentRepoMock = new Mock<ICommentRepository>();
    var shoppingCartMock = new Mock<IShoppingCartRepository>();
    var clientMock = new Mock<IClientRepository>();

    var controller = new AnimalController(loggerMock.Object,animalRepoMock.Object,treatmentRepoMock.Object,residenceRepoMock.Object,commentRepoMock.Object,clientapplicationRepoMock.Object,clientMock.Object,shoppingCartMock.Object);

    Residence residence = new Residence()
    {
        ID = 1,Capacity = 5,CatOrDogResidence = "Dog",Neutered = true,InvidualOrGroup = "group",Sex = "Male"
    };

    Volunteer vol = new Volunteer()
    {
        ID = 1,Email = "[e-mail]",Name = "barend",DateOfBirth = DateTime.Now,PhoneNumber = "dddd"
    };

    Animal an = new Animal()
    {
        ID = 1,Adoptable = true,Description = "hi",Name = "doggo",DogOrCat = "Dog",ReasonAway = "hi",NeuteredOrSterilized = true,Photo = "gg",Sex = "Male",WithChildrenOrNot = "no",IncomingDate = DateTime.Now,EstimatedAge = 20,Residence = residence,Age = 20 
    };

    Treatment treatment = new Treatment()
    {
        Animal = an,AgeRequirement = 5,Costs = 30,DateOfTreatment = DateTime.Now,Description = "test",ID = 1,TreatedBy = "barend",TreatmentType = TreatmentType.Operation
    };

    TreatmentViewModel treatview = new TreatmentViewModel()
    {
        animal = an,Treatment = treatment
    };

    Comment comment = new Comment()
    {
        CommentString = "Operation",Animal = an,CommentMadeBy = vol,Date = DateTime.Now
    };


    //animalRepoMock.Setup(animal => animal.AddAnimal(an)).Returns(an);

    // treatmentRepoMock.Setup(tr => tr.AddTreatment(treatment,an.ID));
    commentRepoMock.Setup(com => com.AddComment(comment,an.ID,"barend"));
    //act
    
    controller.CreateTreatment(treatview);

    //assert
    commentRepoMock.Verify(ps => ps.AddComment(comment,vol.Name),Times.Once);
    
}

当我运行这段代码时，我在这一行收到错误：if (treatmentViewModel.animal.PassingAwayDate != null)，它说这是 null。