Mocking SignalR hub object

[Patrick Fletcher]

I'm trying to create a unit test for a SignalR application (the one created in the Getting Started tutorial here) using Moq and XUnit. 

Some of the hub's functionality- the broadcastMessage method- is defined in the Javascript client. How do I set up the mock client object? Here's what I've got so far:

using System; using Xunit; using SignalRChat; using Microsoft.AspNet.SignalR.Hubs; using Moq; using System.Dynamic; namespace TestLibrary { public class Tests { [Fact] public void HubsAreMockableViaDynamic() { bool sendCalled = false; var hub = new ChatHub(); var mockClients = new Mock<IHubCallerConnectionContext>(); hub.Clients = mockClients.Object; dynamic all = new ExpandoObject(); all.send = new Action<string>(message => { sendCalled = true; }); mockClients.Setup(m => m.All).Returns((ExpandoObject)all); hub.Send("TestUser", "TestMessage"); Assert.True(sendCalled); } } } Here's the result: C:\Projects\SignalRChat\TestLibrary\bin\Debug>xunit.console.clr4 TestLibrary.dll xUnit.net console test runner (64-bit .NET 4.0.30319.34003) Copyright (C) 2013 Outercurve Foundation. xunit.dll: Version 1.9.2.1705 Test assembly: C:\Projects\SignalRChat\TestLibrary\bin\Debug\TestLibrary.dll TestLibrary.Tests.HubsAreMockableViaDynamic [FAIL] Microsoft.CSharp.RuntimeBinder.RuntimeBinderException : 'System.Dynamic.Expan doObject' does not contain a definition for 'broadcastMessage' Stack Trace: at CallSite.Target(Closure , CallSite , Object , String , String ) at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid3[T0,T1,T2](CallSite site, T0 arg0, T1 arg1, T2 arg2) c:\Projects\SignalRChat\SignalRChat\ChatHub.cs(11,0): at SignalRChat.ChatH ub.Send(String name, String message) c:\Projects\SignalRChat\TestLibrary\Tests.cs(31,0): at TestLibrary.Tests.H ubsAreMockableViaDynamic() 1 total, 1 failed, 0 skipped, took 1.371 seconds

[Daniel Cazzulino]

Maybe a good place to start would be SignalR tests themselves? They use Moq too... 

https://github.com/SignalR/SignalR/tree/master/tests/Microsoft.AspNet.SignalR.Tests

/kzu

--
Daniel Cazzulino

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