假设我有以下类(删除异常处理等):
[ServiceBehavior(InstanceContextMode = ..., ConcurrencyMode = ..., etc)]
public class MyService : IMyService
{
ServiceReferenceMethodsHere....
}
public class HostStartup : IHostStartup
{
private ServiceHost _myHost;
public ServiceHost myHost
{
get { return _myHost; }
set { _myHost= value; }
}
public void StartService(IMyService instance)
{
_myHost = new ServiceHost(instance);
}
public void StopService()
}
_myHost.Close();
{
}
现在,订阅ServiceHost.Faulted
事件:
// Note: Interfaces are registered via unity container and dependency injection.
// Unity bootstrapper class not shown.
public class TestHost : ITestHost
{
private IHostStartup _hostStartup;
private IMyService _myService
public TestHost(IHostStartup hostStartup, IMyService myService)
{
_hostStartup = hostStartup;
_myService = myService;
hostStartup.StartService(_myService);
hostStartup.myHost.Faulted += HandleHostFault;
}
private void HandleHostFault(object sender, EventArgs e)
{
HandleFaultHere.....
}
}
好的,太好了,现在我有了处理ServiceHost.Faulted
事件的代码。(当然,我还没有展示真正使我的服务工作的所有其他 WCF 胆量......)
我的问题是,如何对我的私有 HandleHostFault 方法进行单元测试而不作弊并将其设置为公共(有时我们都想这样做)。
换句话说,是否可以ServiceHost.Faulted
在单元测试环境中引发事件?
我更喜欢使用 NSubstitute 进行单元测试。我尝试了以下方法:
private IHostStartup _hostStartup;
private IMyService _myService;
private TestHost _testHost;
public void MyTestInitialize()
{
_hostStartup = Substitute.For<IHostStartup>();
_myService = Substitute.For<IMyService>();
_hostStartup.When(x => x.StartService(Arg.Any<IMyService>())).Do(x =>
{
_hostStartup.myHost = Substitute.For<ServiceHost>();
});
_testHost = new TestHost(_hostStartup, _myService);
}
public void HandleHostFault_InitializeHost_ServiceHostStatusOpen()
{
// Arrange
// Act
hostStartup.myHost.Faulted += Raise.Event();
// Assert
}
hostStartup.myHost.Faulted += Raise.Event()
不会引发故障事件。
任何想法如何引发此 servicehost.faulted 事件?可能吗?
** 更新 **
我决定不直接测试 ServiceHost 通信对象。我认为它“无法使用 NSubstitute 进行测试”。我现在处理来自我的 HostStartup 类的 ServiceHost.Faulted 事件。
public class HostStartup : IHostStartup
{
public event EventHandler<EventArgs> OnHostFault;
public ServiceHost MyHost { get; private set; }
public void StartService(IMyService instance)
{
MyHost = new ServiceHost(instance);
MyHost.Faulted += HandleFault;
}
public void StopService()
}
_myHost.Close();
{
private void InvokeOnServiceHostFault(EventArgs eventArgs)
{
EventHandler<EventArgs> handler = OnHostFault;
if (handler != null) handler(this, eventArgs);
}
private void HandleFault(object sender, EventArgs eventArgs)
{
InvokeOnServiceHostFault(eventArgs);
}
}
// Note: Interfaces are registered via unity container and dependency injection.
// Unity bootstrapper class not shown.
public class TestHost : ITestHost
{
private IHostStartup _hostStartup;
private IMyService _myService
public TestHost(IHostStartup hostStartup, IMyService myService)
{
_hostStartup = hostStartup;
_myService = myService;
hostStartup.StartService(_myService);
hostStartup.OnHostFault += HandleHostFault;
}
private void HandleHostFault(object sender, EventArgs e)
{
HandleFaultHere.....
}
}
最后,单元测试操作效果很好:
public void HandleHostFault_InitializeHost_ServiceHostStatusOpen()
{
// Arrange
// Act
hostStartup.OnHostFault += Raise.Event(); // works great!! :)
// Assert
}