Question

我正在使用Moq为我的SignalR 2.x应用程序构建一个UnitTest框架。我目前正在通过以下方式嘲笑我的客户：

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

为了测试，我需要测试按组发送消息：

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

如何向我的模拟客户端添加群组支持？

Answer 1

检查一下： 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();
        }

Answer 2

您可以参考SingalR团队的this教程。

Answer 3

如果您想检查某个群组是否已收到通知，您应该可以执行此类操作（这是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);
}

上面的代码检查我的NotificationsHub.RaiseAlert(string groupId)方法仅在客户端为我传入的特定groupId触发。

这是正在测试的中心：

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("");

    }
}

如何在SignalR 2.x单元测试框架中向模拟客户端添加组支持？

3 个答案: