unit-testing - 单元测试 SignalR 集线器

Question

我想在 SignalR 中测试我的集线器，最好的方法是什么？

到目前为止我想到的可能的解决方案:

• 创建可测试的 Hub
• 分离类的抽象逻辑
• Selenium(想测试更小的单元)
• 或者是否忽略了某些 SignalR 测试功能

目前使用 SignalR 0.4 和 NUnit 作为测试框架。

Answer 1

这link展示了如何使用 Moq 对 SignalR hub 方法进行单元测试。您模拟存储库、客户端、上下文和调用者。这是该站点的代码，我做了一些小改动以使其适用于最新的 SignalR:

public class TestableChatHub : ChatHub  
{  
 public Mock<IChatRepository> MockChatRepository { get; private set; }

 public TestableChatHub(Mock<IChatRepository> mockChatRepository)  
   : base(mockChatRepository.Object)  
 {
   const string connectionId = "1234";  
   const string hubName = "Chat";  
   var mockConnection = new Mock<IConnection>();  
   var mockUser = new Mock<IPrincipal>();  
   var mockCookies = new Mock<IRequestCookieCollection>();

   var mockRequest = new Mock<IRequest>();  
   mockRequest.Setup(r => r.User).Returns(mockUser.Object);  
   mockRequest.Setup(r => r.Cookies).Returns(mockCookies.Object);

   Clients = new ClientProxy(mockConnection.Object, hubName);  
   Context = new HubCallerContext(mockRequest.Object, connectionId);

   var trackingDictionary = new TrackingDictionary();  
   Caller = new StatefulSignalProxy(
        mockConnection.Object, connectionId, hubName, trackingDictionary);  
 }  
} 

然后站点显示您可以使用这个可测试的中心来编写单元测试:

   [TestClass]  
   public class ChatHubTests  
   {  
     private TestableChatHub _hub;

     public void SetUpTests()  
     {  
       _hub = GetTestableChatHub();  
     }

     [Test]  
     public void ExampleTest()  
     {  
       SetUpTests();
       const string message = "test";  
       const string connectionId = "1234";

       var result = _hub.Send(message);

       _hub.MockChatRepository.Verify(r => r.SaveMessage(message, connectionId));
       Assert.IsTrue(result);  
     }

     private TestableChatHub GetTestableChatHub()  
     {  
       var mockRepository = new Mock<IChatRepository>();  
       mockRepository.Setup(m => m.SaveMessage(
            It.IsAny<string>(), It.IsAny<string())).Returns(true);  
       return new TestableChatHub(mockRepository);  
     }  
   }