How do I add Group support to a mocked Client in a SignalR 2.x unit testing framework?

问题:

I'm using Moq to build up a UnitTest framework for my SignalR 2.x application. I am currently mocking up my Clients by:

var mockClients = new Mock<IHubCallerConnectionContext>(); Clients = mockClients.Object; 

In order to test, I need to test sending messages by Group:

Clients.Group(groupName).sendSomeMessage(message); 

How do I add Group support to my mocked up Client?

回答1:

Check this: https://github.com/SignalR/SignalR/blob/release/tests/Microsoft.AspNet.SignalR.Tests/Server/Hubs/HubFacts.cs

 public void HubsGroupAreMockable()         {             var hub = new MyTestableHub();             var mockClients = new Mock<IHubCallerConnectionContext<dynamic>>();             var groups = new Mock<IClientContract>();              hub.Clients = mockClients.Object;             groups.Setup(m => m.send(It.IsAny<string>())).Verifiable();             mockClients.Setup(m => m.Group("test")).Returns(groups.Object);             hub.SendGroup("test", "foo");              groups.VerifyAll();         } 

回答2:

You could refer to this tutorial by the SingalR team.

回答3:

If you want to check that a certain group was notified you should be able to do something like this (this is SignalR 2):

public interface IClientContract {     void RaiseAlert(string message); }  [Test] public void NotifiesOnlySpecifiedGroupWhenGroupIdSent() {     // Adapted from code here: https://github.com/SignalR/SignalR/blob/dev/tests/Microsoft.AspNet.SignalR.Tests/Server/Hubs/HubFacts.cs      // Arrange      // Set up the individual mock clients     var group1 = new Mock<IClientContract>();     var group2 = new Mock<IClientContract>();     var group3 = new Mock<IClientContract>();      group1.Setup(m => m.RaiseAlert(It.IsAny<string>())).Verifiable();     group2.Setup(m => m.RaiseAlert(It.IsAny<string>())).Verifiable();     group3.Setup(m => m.RaiseAlert(It.IsAny<string>())).Verifiable();      // set the Connection Context to return the mock clients     var mockClients = new Mock<IHubCallerConnectionContext<dynamic>>();     mockClients.Setup(m => m.Group("1")).Returns(group1.Object);     mockClients.Setup(m => m.Group("2")).Returns(group2.Object);     mockClients.Setup(m => m.Group("3")).Returns(group3.Object);      // Assign our mock context to our hub     var hub = new NotificationsHub     {         Clients = mockClients.Object     };      // Act     hub.RaiseNotificationAlert("2");      // Assert     group1.Verify(m => m.RaiseAlert(It.IsAny<string>()), Times.Never);     group2.Verify(m => m.RaiseAlert(""), Times.Once);     group3.Verify(m => m.RaiseAlert(It.IsAny<string>()), Times.Never); } 

The code above is checking that my NotificationsHub.RaiseAlert(string groupId) method is only triggered on the client side for the specific groupId I pass in.

This is the hub that's being tested:

public class NotificationsHub : Hub {     public void RaiseAlert(string message)     {         Clients.All.RaiseAlert(message);     }      public void RaiseNotificationAlert(string groupId)     {         if (groupId== null)         {             // Notify all clients             Clients.All.RaiseAlert("");             return;         }          // Notify only the client for this userId         Clients.Group(groupId).RaiseAlert("");      } } 

文章来源: How do I add Group support to a mocked Client in a SignalR 2.x unit testing framework?