Asp.net mvc 3 实体框架、通用存储库和单元测试

我解决了我的问题，但不确定为什么事情会这样，我问，因为我总是想知道为什么事情会这样

好的，我正在开发一个MVC 3应用程序，我使用一个通用存储库，unity用于DI，moq用于单元测试。在我编辑项目的单元测试中，我的控制器最初有以下功能： AnEntityObj=\u anEntityService.GetById（id）

但是，当我的单元测试调用控制器中的编辑（1）时，返回null。当我把读数改为 AnEntityObj=\u anEntityService.GetAll（）.FirstOrDefault（p=>p.Id==Id）

它正确地返回了模拟项

现在，我很高兴我弄明白了这一点，然而，我仍然在挠头，为什么这对单元测试有效，但是GetById在我运行应用程序时起作用

任何洞察都会非常有用

提前谢谢

以下是模拟数据：

public class AdministrationMockData
{
    #region Administration Mock Data
    #region County Mock Data
    public static void CreateCounty(ref Mock<ICountyService> mock)
    {
        mock.Setup(m => m.GetAll()).Returns(new List<County> 
        {
    new County { Id = 1, Name = "Adams", StateId = 39, IsActive = true, LastChangedDate = DateTime.Now, LastChangedBy = "dba", AddedDate = DateTime.Now, AddedBy = "dba" },
    new County { Id = 2, Name = "Berks",  StateId = 39, IsActive = true, LastChangedDate = DateTime.Now, LastChangedBy = "dba", AddedDate = DateTime.Now, AddedBy = "dba" },
    new County { Id = 3, Name = "Chester",  StateId = 39, IsActive = true, LastChangedDate = DateTime.Now, LastChangedBy = "dba", AddedDate = DateTime.Now, AddedBy = "dba" },
    new County { Id = 4, Name = "York",  StateId = 39, IsActive = true, LastChangedDate = DateTime.Now, LastChangedBy = "dba", AddedDate = DateTime.Now, AddedBy = "dba" },
    new County { Id = 5, Name = "Baltimore",  StateId = 21, IsActive = true, LastChangedDate = DateTime.Now, LastChangedBy = "dba", AddedDate = DateTime.Now, AddedBy = "dba" },
    new County { Id = 6, Name = "Montgomery",  StateId = 21, IsActive = true, LastChangedDate = DateTime.Now, LastChangedBy = "dba", AddedDate = DateTime.Now, AddedBy = "dba" }
  }.AsQueryable());
    }
    #endregion County Mock Data

    #region State Mock Data
    public static void CreateState(ref Mock<IStateService> mock)
    {
        mock.Setup(m => m.GetAll()).Returns(new List<State> 
        {
    new State { Id = 21, Name = "Maryland", Code = "MD", IsActive = true, LastChangedDate = DateTime.Now, LastChangedBy = "dba", AddedDate = DateTime.Now, AddedBy = "dba" },
    new State { Id = 39, Name = "Pennsylvania",  Code = "PA", IsActive = true, LastChangedDate = DateTime.Now, LastChangedBy = "dba", AddedDate = DateTime.Now, AddedBy = "dba" }        
  }.AsQueryable());
    }
    #endregion State Mock Data
    #endregion Administration Mock Data
}

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我有一个通用的存储库和接口存储库，由TEntity为每个特定实体实例化，还有一个执行存储库的服务和接口服务。我的存储库和服务基于：

如果调用

GetById

时从未设置

CountyService

以返回正确的数据，则会得到null。添加以下用于设置模拟的代码，您可以使用

GetById

方法：

mock.Setup(m => m.GetById(1).Returns(new State { Id = 1, ... });

或者将其设置为使用传递给方法的任何参数：

mock.Setup(m => m.GetById(It.IsAny<int>()).Returns(new State { ... });

mock.Setup（m=>m.GetById（It.IsAny（））。返回（新状态{…}）；

我不认为这是解决问题的方法。您正在下载所有项目并在客户端执行过滤，这将影响您的应用程序性能。无论如何，您是否可以共享您在测试中用于配置模拟的代码？如何模拟数据？您是否正确设置了ID？如dmusial所说，代码会很有帮助。太棒了，就是这样。进入单元测试是很重要的。

mock.Setup(m => m.GetById(1).Returns(new State { Id = 1, ... });

mock.Setup(m => m.GetById(It.IsAny<int>()).Returns(new State { ... });