c# - SignalR:使用 moq 框架模拟 IHub 并测试他的方法

Question

我尝试测试继承基类 Hub ( implements IHub interface ) 的自定义 RepositoryHub。我模拟了 IHub 的所有必要属性和我想测试的他的方法调用之一。方法调用被模仿为来自派生自定义类 RepositoyHub 的调用:
hubMock.Setup(p => p.OnConnected()).Returns(new RepositoryHub().OnConnected());
问题是该方法无法访问模拟的 IHub 字段。

    [TestMethod]
    public void Is_OnConnected_Successive_When_Instances_is_Absent_And_User_Authenticated()
    {
        try
        {
            var connectionId = "1";

            var request = new Mock<IRequest>();
            request.Setup(s => s.User.Identity.Name).Returns(user + "&" + server + "&" + password + "&" + level);
            request.Setup(s => s.User.Identity.IsAuthenticated).Returns(true);

            var mockClients = new Mock<IHubCallerConnectionContext>();
            var mockGroupManager = new Mock<IGroupManager>();
            var mockHubCallerContext = new Mock<HubCallerContext>(request.Object, connectionId);

            var hubMock = new Mock<IHub>(); 
            hubMock.Setup(p => p.Groups).Returns(mockGroupManager.Object);
            hubMock.Setup(p => p.Context).Returns(mockHubCallerContext.Object);
            hubMock.Setup(p => p.Clients).Returns(mockClients.Object);
            //Mock virtual method call
            hubMock.Setup(p => p.OnConnected()).Returns(new RepositoryHub().OnConnected()); 


            var r = hubMock.Object.OnConnected();
        }
        catch (Exception ex)
        {       
            throw;
        }
    }
       // Here method which i want to test with mocked IGroupManager, HubCallerContext and IHubCallerConnectionContext

    public partial class  RepositoryHub: Hub
    {
        public override Task OnConnected()
        {
            try
            {
                var userProfile = new UserProfile(Context.User); 
                //NullReference exception Context == null, but why i got it if mocked
                //HubCallerContext in test method

                Groups.Add(Context.ConnectionId, userProfile.ServerUrl);
                // and other useful actions 

                return base.OnConnected();
            }
            catch (Exception ex)
            {
                Log.TraceError(String.Format(" Hub: OnConnected() {0}", ex.Message));
                throw;
            }
        }
     }

Answer 1

对于我来说，我找到了简单的方法。感谢关注!

            var repository = new RepositoryHub(){ Context = mockHubCallerContext.Object,
                                                  Clients = mockClients.Object,
                                                  Groups = mockGroupManager.Object };

            var r = repository.OnConnected();

对于 JohnB，请回答您的最后一个问题:

[TestMethod]
public void Is_OnConnected_Successive()
{
    const string connectionId = "1";
    dynamic groupName = new ExpandoObject();

    var IsSendMessageCalled = false;

    groupName.sendMessage = new Action<object>((message) =>
    {
        IsSendMessageCalled = true;
        Debug.WriteLine("sendMessage was called, message:  {0}", message);
    });

    var request = new Mock<IRequest>();
    request.Setup(s => s.User.Identity.Name).Returns(user + "&" + server + "&" + password + "&" + level);
    request.Setup(s => s.User.Identity.IsAuthenticated).Returns(true);

    var mockClients = new Mock<IHubCallerConnectionContext>();
    mockClients.Setup(m => m.Group("groupName")).Returns((ExpandoObject)groupName);

    var mockGroupManager = new Mock<IGroupManager>();
    var mockHubCallerContext = new Mock<HubCallerContext>(request.Object, connectionId);

    var hub = new RepositoryHub()
    {
        Context = mockHubCallerContext.Object,
        Clients = mockClients.Object,
        Groups = mockGroupManager.Object
    };

    var testMethod = hub.OnConnected();
    Thread.Sleep(threadSleepTime);
    //or testMethod.Wait();

    Assert.IsTrue(IsSendMessageCalled);
}

让我们建议，在这里你调用你的 sendMessage(message) 方法:

public override Task OnConnected()
{
    Hub.Clients.Group("groupName").sendMessage("Hello ! for groupName group ");
}