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POHow do I unit test handlers with NServiceBus?
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  1. POHow do I unit test handlers with NServiceBus?
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    copied!<p>This should be simple and I'm probably missing something. I'm working from here: <a href="http://support.nservicebus.com/customer/portal/articles/856297-unit-testing" rel="nofollow">http://support.nservicebus.com/customer/portal/articles/856297-unit-testing</a></p> <p>The following always fails:</p> <pre><code>[TestFixture] public class MyTestFixture { [Test] public void RoundTrip() { Test.Initialize(); var correlationId = Guid.NewGuid(); Test.Handler(bus =&gt; new MyHandler(bus)) .ExpectReply&lt;IEventThatHappened&gt;(m =&gt; m.CorrelationId == correlationId) .OnMessage&lt;MyCommand&gt;(m =&gt; new MyCommand(correlationId)); } } public interface IEventThatHappened : IEvent { Guid CorrelationId { get; set; } } public class MyCommand : ICommand { public Guid CorrelationId { get; private set; } public MyCommand(Guid correlationId) { CorrelationId = correlationId; } } public class MyHandler : IHandleMessages&lt;MyCommand&gt; { private readonly IBus _bus; public MyHandler(IBus bus) { if (bus == null) { throw new ArgumentNullException("bus"); } _bus = bus; } public void Handle(MyCommand message) { _bus.Send&lt;IEventThatHappened&gt;(m =&gt; m.CorrelationId = message.CorrelationId); } } </code></pre> <p>If I set a breakpoint inside my handler, the message.CorrelationId == Guid.Empty. The exception thrown during the test is:</p> <p>System.Exception : ExpectedReplyInvocation not fulfilled. Calls made: SendInvocation</p> <p>I've tried using bus.Send, bus.Publish, bus.Reply but each one fails with the corresponding Expected*Invocation . </p> <p>Why is the message.CorrelationId == Guid.Empty instead of the value I supplied? Why doesn't Test.Handler&lt;> detect that I've called Send/Reply/Publish in my handler?</p> <p>NOTE: Using NServiceBus 3.3 from Nuget.</p>
 

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