[英]Mocking ApiController SignalR broadcasting
我試圖嘲弄SignalR廣播目前在ApiController
(的WebAPI),但無法完成測試的情況下,下面是我的代碼
public class HubServer : Hub { }
public abstract class ApiControllerWithHubController<THub> : ApiController where THub : IHub
{
Lazy<IHubContext> hub = new Lazy<IHubContext>(() => GlobalHost.ConnectionManager.GetHubContext<THub>());
protected IHubContext Hub
{
get { return hub.Value; }
}
}
public class NotificationController : ApiControllerWithHubController<HubServer>
{
[HttpPost]
public HttpResponseMessage SendNotification(NotificationInput notification)
{
Hub.Clients.Group("GroupName").BroadcastCustomerGreeting("notification");
}
}
我正在借助Mock SignalR Post編寫以下單元測試,我被困在這里 ,因為這是來自控制器而不是SignalR Hub的SignalR調用。
public interface IClientContract
{
void BroadcastCustomerGreeting(string message);
}
[TestMethod]
public void SendNotificationTest()
{
NotificationInput notificationInput = new NotificationInput();
notificationInput.CId = "CUST001";
notificationInput.CName = "Toney";
// Arrange
var mockClients = new Mock<IHubConnectionContext<dynamic>>();
var mockGroups = new Mock<IClientContract>();
// Act.
mockGroups.Setup(_ => _.BroadcastCustomerGreeting("notification")).Verifiable();
mockClients.Setup(_ => _.Group("GroupName")).Returns(mockGroups.Object);
// I'm stuck here
var controller = new NotificationController();
// Act
HttpResponseMessage actionResult = controller.SendNotification(notificationInput);
}
感謝您提供任何幫助來完成/糾正此單元測試。
需要重新設計。 基本的ApiController
緊密耦合到集線器上下文的靜態訪問器。 這需要重構為它自己的服務,以通過構造函數注入獲得更大的靈活性。
public interface IHubContextProvider {
IHubContext Hub { get; }
}
public class HubContextProvider<THub> : IHubContextProvider where THub : IHub {
Lazy<IHubContext> hub = new Lazy<IHubContext>(() => GlobalHost.ConnectionManager.GetHubContext<THub>());
public IHubContext Hub {
get { return hub.Value; }
}
}
現在需要重構控制器以顯式公開其依賴關系。
public abstract class ApiControllerWithHubController<THub> : ApiController where THub : IHub {
private readonly IHubContext hub;
public ApiControllerWithHubController(IHubContextProvider context) {
this.hub = context.Hub;
}
protected IHubContext Hub {
get { return hub; }
}
}
public class NotificationController : ApiControllerWithHubController<HubServer> {
public NotificationController(IHubContextProvider context)
: base(context) {
}
[HttpPost]
public IHttpActionResult SendNotification(NotificationInput notification) {
Hub.Clients.Group("GroupName").BroadcastCustomerGreeting("notification");
return Ok();
}
}
現在可以使用必要的依賴模型進行測試。
[TestMethod]
public void _SendNotificationTest() {
// Arrange
var notificationInput = new NotificationInput();
notificationInput.CId = "CUST001";
notificationInput.CName = "Toney";
var groupName = "GroupName";
var message = "notification";
var mockGroups = new Mock<IClientContract>();
mockGroups.Setup(_ => _.BroadcastCustomerGreeting(message)).Verifiable();
var mockClients = new Mock<IHubConnectionContext<dynamic>>();
mockClients.Setup(_ => _.Group(groupName)).Returns(mockGroups.Object).Verifiable();
var mockHub = new Mock<IHubContext>();
mockHub.Setup(_ => _.Clients).Returns(mockClients.Object).Verifiable();
var mockHubProvider = new Mock<IHubContextProvider>();
mockHubProvider.Setup(_ => _.Hub).Returns(mockHub.Object);
var controller = new NotificationController(mockHubProvider.Object);
// Act
var actionResult = controller.SendNotification(notificationInput);
//Assert
mockClients.Verify();
mockGroups.Verify();
mockHub.Verify();
}
只需確保在DI容器中注冊新服務,以便可以將其注入到相關的控制器中。
通過重新設計,可以一起刪除基本控制器,並且可以直接使用集線器提供程序。 這是假設沒有其他原因擁有基本控制器。
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