Uniform Session Testing

NuGet Package: NServiceBus.UniformSession.Testing (3-pre)
This page targets a pre-release version. Pre-releases are subject to change and samples are not guaranteed to be fully functional.

Shows the usage of the NServiceBus.UniformSession.Testing package.

Prerequisites for uniform session testing functionality

The approach shown here works with the NServiceBus.UniformSession NuGet package version 2.2.0 or above. Install the NServiceBus.UniformSession.Testing NuGet package.

Testing services

Construct the service under test with an instance of TestableUniformSession. Call the methods being tested and make assertions about the messages sent and published.

var session = new TestableUniformSession();
var service = new SomeService(session);

service.DoTheThing();

Assert.AreEqual(1, session.SentMessages.Length);

Testing together with IMessageSession

For tests including code paths using both IMessageSession and IUniformSession, the TestableUniformSession can also wrap a TestableMessageSession:

var messageSession = new TestableMessageSession();
// pass the message session to the TestableUniformSession:
var uniformSession = new TestableUniformSession(messageSession);
var sharedComponent = new SharedComponent(uniformSession);
var myService = new MyService(sharedComponent);

myService.Start(messageSession);

Assert.AreEqual(1, messageSession.PublishedMessages.Length);

Testing a handler

Construct the handler under test with an instance of TestableUniformSession.

var handlerContext = new TestableMessageHandlerContext();
// pass the handler context to TestableUniformSession:
var uniformSession = new TestableUniformSession(handlerContext);
var handler = new SomeMessageHandler(new SharedComponent(uniformSession));

await handler.Handle(new SomeEvent(), handlerContext);

Assert.AreEqual(1, uniformSession.SentMessages.Length);

Testing a saga

Construct the saga under test with an instance of TestableUniformSession.

var handlerContext = new TestableMessageHandlerContext();
var uniformSession = new TestableUniformSession(handlerContext);
var saga = new SomeSaga(uniformSession);

saga.Handle(new SomeMessage(), handlerContext);

Assert.AreEqual(1, uniformSession.PublishedMessages.Length);

Related Articles

  • Uniform Session
    Uniform Session introduces a uniform message session across the endpoint.

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