Question

这是我的一个单元测试类的示例（简化为基础）。在控制器中，当调用Index（）动作方法时，对GetByID（1234）的调用总是导致Ticket对象的新实例。该对象存在，但它的所有属性都为null，即使我已将它们设置在我的假对象中。关于为什么的任何想法？

我正在使用Moq。

单元测试

    [TestClass]
    public class TicketControllerTests : ControllerTestBase
    {
        protected Mock<ITicketRepository> MockTicketRepository = new Mock<ITicketRepository>();

        [TestMethod]
        public void IndexActionModelIsTypeOfTicketModel()
        {
            //ARRANGE
            Mock<HttpContextBase> context = FakeHttpContext();
            context.Setup(ctx => ctx.Session[SessionKeys.TokenData.ToString()]).Returns(Constants.TOKENDATA_SUBMITTER);

            MockTicketRepository.Setup(x => x.GetById(It.IsAny<int>())).Returns(Constants.CLIENT_TICKET);

            //ACT
            var result = GetController(context.Object).Index(Constants.TICKET_ID);
            var model = ((ViewResult)result).Model;

            //ASSERT
            Assert.IsInstanceOfType(model, typeof(TicketModel), "ViewModel should have been an instance of TicketModel.");
        }

        private TicketController GetController(HttpContextBase context)
        {
            var controller = new TicketController(MockTicketRepository.Object);
            controller.ControllerContext = GetControllerContext(context, controller);
            return controller;
        }
    }

Constants.CLIENT_TICKET

public static Ticket CLIENT_TICKET
        {
            get
            {
                var ticket = new Ticket
                {
                    CategoryID = 1,
                    CreatedByUserId = 4
                };

                ticket.Clients.Add(new Client { ShortName = "Test Client 1"});
                ticket.Clients.Add(new Client { ShortName = "Test Client 2" });

                ticket.User = new User {FirstName = "First", LastName = "Last"};

                return ticket;
            }
        }

控制器

private readonly ITicketRepository _ticketRepository;

public TicketController(ITicketRepository ticketRepository)
{
    _ticketRepository = ticketRepository;
}

public ActionResult Index(int id)
{
    var ticket = _ticketRepository.GetById(id);

    // etc...
}

Answer 1

您能否显示正在测试的控制器代码？它可能与您如何设置模拟上下文有关，但如果没有看到控制器代码则很难分辨。

另外，如果在创建模拟时添加MockBehavior.Strict，如果调用没有相应的期望，它将弹出：

protected Mock<ITicketRepository> MockTicketRepository = new Mock<ITicketRepository>(MockBehavior.Strict);

UPDATE 我试图去除所有内容，以便尽可能简单地测试并尝试隔离问题。以下是我的想法：

[TestClass]
public class TicketControllerTests : ControllerTestBase
{
    protected Mock<ITicketRepository> MockTicketRepository;

    [TestMethod]
    public void IndexActionModelIsTypeOfTicketModel()
    {
        //ARRANGE
        MockTicketRepository = new Mock<ITicketRepository>(MockBehavior.Strict);
        MockTicketRepository.Setup(x => x.GetById(Constants.TICKET_ID)).Returns(Constants.CLIENT_TICKET);
        var controller = new TicketController(MockTicketRepository.Object);

        //ACT - try to keep ACT as lean as possible, ideally just the method call you're testing
        var result = controller.Index(Constants.TICKET_ID);

        //ASSERT
        var model = ((ViewResult)result).ViewData.Model;
        Assert.That(model, Is.InstanceOfType<TicketModel>(), "ViewModel should have been an instance of TicketModel.")
    }
}

模拟存储库返回具有null属性的对象

1 个答案: