模擬更新方法返回與起訂量

Question

空洞在我的測試，我定義爲數據List<IUser>在一些記錄。

我想建立一個最小起訂量的梅索德Update，該方法接收用戶id和string進行更新。

然後我得到了IUser和更新屬性LastName

我嘗試這樣做：

namespace Tests.UnitTests 
{ 
    [TestClass] 
    public class UsersTest 
    { 
     public IUsers MockUsersRepo; 
     readonly Mock<IUsers> _mockUserRepo = new Mock<IUsers>(); 
     private List<IUser> _users = new List<IUser>(); 

     [TestInitialize()] 
     public void MyTestInitialize() 
     { 
      _users = new List<IUser> 
       { 
        new User { Id = 1, Firsname = "A", Lastname = "AA", IsValid = true }, 
        new User { Id = 1, Firsname = "B", Lastname = "BB", IsValid = true } 
       }; 

      Mock<IAction> mockUserRepository = new Mock<IAction>(); 
      _mockUserRepo.Setup(mr => mr.Update(It.IsAny<int>(), It.IsAny<string>())) 
       .Returns(???); 

      MockUsersRepo = _mockUserRepo.Object; 
     } 

     [TestMethod] 
     public void Update() 
     { 
      //Use the mock here 
     } 

    } 
} 

但我得到這個錯誤：無法解決返回symbole

你有一個ID ？

class User : IUser 
{ 
    public int Id { get; set; } 
    public string Firsname { get; set; } 
    public string Lastname { get; set; } 
    public bool IsValid { get; set; } 
} 

interface IUser 
{ 
    int Id { get; set; } 
    string Firsname { get; set; } 
    string Lastname { get; set; } 
    bool IsValid { get; set; } 
} 

interface IAction 
{ 
    List<IUser> GetList(bool isActive); 
    void Update(int id, string lastname) 
} 

class Action : IAction 
{ 
    public IUser GetById(int id) 
    { 
     //.... 
    } 
    public void Update(int id, string lastname) 
    { 
     var userToUpdate = GetById(id); 
     userToUpdate.LastName = lastname; 
     //.... 
    } 
} 

Answer 1

如果你只是想驗證這個方法被調用，你應該使用Verifiable（）方法。

_mockUserRepository.Setup(mr => mr.Update(It.IsAny<int>(), It.IsAny<string>())) 
        .Verifiable(); 

如果您還想對這些參數做些什麼，請首先使用Callback（）。

_mockUserRepository.Setup(mr => mr.Update(It.IsAny<int>(), It.IsAny<string>())) 
        .Callback((int id, string lastName) => { 
         //do something 
         }).Verifiable(); 

更新

這裏是你應該如何嘲笑它，如果你返回一個布爾值作爲結果。

_mockUserRepository.Setup(mr => mr.Update(It.IsAny<int>(), It.IsAny<string>())) 
        .Returns(true); 

Answer 2

Mock<IUsers> _mockUserRepository = new Mock<IUsers>(); 
     _mockUserRepository.Setup(mr => mr.Update(It.IsAny<int>(), It.IsAny<string>())) 
          .Callback((int id, string name) => 
           { 
            //Your callback method here 
           }); 
//check to see how many times the method was called 
_mockUserRepository.Verify(mr => mr.Update(It.IsAny<int>(), It.IsAny<string>()), Times.Once());