單元測試方法嘲弄的IList

Question

我試圖嘲弄以下方法TryGetApns：

private readonly Func<string, ICommunicationClient> _communicationFactory; 

    public CommunicationApiFacade(Func<string, ICommunicationClient> communicationFactory) 
    { 
     _communicationFactory = communicationFactory; 
    } 

    public IList<ApnResponse> TryGetApns(string tenant) 
    { 
     GetApnsResponse response = null; 
     try 
     { 
      var communicationApiClient = _communicationFactory(tenant); 
      response = communicationApiClient.JctConfigurationService.GetApns(); 
     } 
     catch (HttpException e) 
     { 
      ... 
     } 

     return response?.Apns ?? new List<ApnResponse>(); 
    } 

與下面的測試：

private Mock<ICommunicationApiFacade> _communicationApiFacade; 

    [SetUp] 
    public void SetUp() 
    { 
     _fixture = new Fixture() 
      .Customize(new AutoMoqCustomization()); 

     _communicationApiFacade = _fixture.Freeze<Mock<ICommunicationApiFacade>>(); 
    } 

    [Test] 
    public void RunJctTests_WhenJctIsInAPrivateNetwork_ShouldReturnAPassedTest() 
    { 
     // Arrange 
     var jctApn = _fixture.Create<string>(); 
     var message = _fixture.Build<JctLoggedIn>() 
      .With(x => x.ApnFromDevice, jctApn) 
      .Create(); 

     var response = _fixture.Build<ApnResponse>() 
      .With(x => x.IsPrivateApn, true) 
      .With(x => x.ApnName, jctApn).Create(); 

     _communicationApiFacade.Setup(x => x.TryGetApns(string.Empty)) 
      .Returns(new List<ApnResponse> { response }); 

     var subject = _fixture.Create<NetworkProviderTestRunner>(); 

     // Act 
     var result = subject.Execute(message); 

     // Assert 
     Assert.That(result.Result, Is.True); 
    } 

，這是NetworkProviderTestRunner類：

private readonly ICommunicationApiFacade _communicationApi; 

    public NetworkProviderTestRunner(ICommunicationApiFacade communicationApi) 
    { 
     _communicationApi = communicationApi; 
    } 

    public JctTest Execute(JctLoggedIn message) 
    { 
     var apns = _communicationApi.TryGetApns(message.Tenant); 

     var jctApn = apns.FirstOrDefault(x => x.ApnName == message.ApnFromDevice); 

     if (jctApn != null) 
     { 
      var privateApn = apns.FirstOrDefault(x => x.PublicApnId.Equals(jctApn.Id)); 
      if (privateApn != null || jctApn.IsPrivateApn) 
       return new JctTest { Result = true }; 
     } 
     return new JctTest { Result = false }; 
    } 

public class JctLoggedIn : Message 
{ 
    public string Imei { get; set; } 
    public string SimCardIdFromDevice { get; set; } 
    public string SimCardIdFromStorage { get; set; } 
    public string ApnFromDevice { get; set; } 
    public string ApnFromStorage { get; set; } 
    public string FirmwareFromDevice { get; set; } 
    public int DeviceTypeFromStorage { get; set; } 
    public int SerialNumber { get; set; } 
} 

但由於某種原因，我總是回到一個空列表：0 JctLoggedIn類。我試着填充SetUp中的列表，並在那裏定義輸出，但我總是一樣的。任何幫助？

Answer 1

在構建message對象時，你可以明確地省略Tenant屬性，還可以改變模擬設置這樣：

_communicationApiFacade.Setup(x => x.TryGetApns(message.Tenant)) 
    .Returns(new List<ApnResponse> { response }); 

Answer 2

此行

_communicationApiFacade.Setup(x => x.TryGetApns(string.Empty)) 
     .Returns(new List<ApnResponse> { response }); 

告訴模擬返回一個包含響應時TryGetApns被稱爲與租戶參數爲空字符串列表。

什麼是message.Tenant的消息後值由該行創建：

var message = _fixture.Build<JctLoggedIn>() 
     .With(x => x.ApnFromDevice, jctApn) 
     .Create(); 

如果沒有的String.Empty，你的模擬將不會返回效應初探列表。

Answer 3

更換

var response = _fixture.Build<ApnResponse>() 
      .With(x => x.IsPrivateApn, true) 
      .With(x => x.ApnName, jctApn).Create(); 

與

var response = _fixture.Build<ApnResponse>() 
      .With(x => x.Tenant, String.Empty) 
      .With(x => x.IsPrivateApn, true) 
      .With(x => x.ApnName, jctApn).Create(); 

如果租客是可寫的。

如果該屬性是可寫的，AutoFixture將爲Tenant創建一個非空值的對象，而無需明確設置您想要的值。