Unit Testing objects registered with PerWCFOperation

[Scott Ferguson]

Hello,

I have a WCF application and all objects are registered with a LifeStyle of PerWCFOperation.

This works great in Production, and support all my concurrency needs.

The issue is I have Integration Tests that can no longer access the Service classes, yielding an exception of:

    Could not obtain scope for component "FooService". This is most likely either a bug in custom IScopeAccessor or you're trying to access scoped component outside of the scope (like a per-web-request component outside of web request etc)

I'd rather not register my classes with a different LifeStyle for unit tests, my DbContext is being shared by Repo's and a UoW object, and NUnit runs the tests in parallel.

Right now, the base class does the access like so (this is the only place I explicitly resolve in the entire app...in Production, everything is constructor injection from the root of the application):

    public class ServiceIntegrationTestBase<T> : ServiceIntegrationTestBase

    {

        protected T CUT;

        [TestFixtureSetUp]

        protected void Setup()

        {

            // Fails when executing this line:

            CUT = IocContainer.Resolve<T>();

        }

        [TestFixtureTearDown]

        protected void TearDown()

        {

            IocContainer.Release(CUT);

        }

    }

How do I access the WCF Service classes from my unit tests? I feel like I need to get backed up to the DefaultServiceHostFactory, and simulate a WCF call, but haven't been able to get it yet.

[Scott Ferguson]

I came up with a solution, for anyone that may stumble upon this in the future.

Basically, I fire up a true instance of the web service when the Integration Tests startup. Then I create a Channel and set CUT to that. None of my tests had to change, just changed the base.

It's also nice, b/c NUnit is firing many concurrent requests at the service at once, so it's inherently testing concurrency against a true instance of the service.

        private void Initialize()

        {

            if (_isInitialized)

                return;

            lock (SyncLock)

            {

                if (_isInitialized)

                    return;

                // Register everything with IoC, PerWCFOperation

                Application.Startup();

                // localhost:8733 is a post left open for debugging (http://stackoverflow.com/questions/885744/wcf-servicehost-access-rights)

                var baseAddress = new Uri("http://localhost:8733/Design_Time_Addresses/" + typeof(T).Name);

                var serviceHost = new DefaultServiceHostFactory(IocContainer.Instance.Kernel).CreateServiceHost(typeof(T).AssemblyQualifiedName, new Uri[] { baseAddress });

                var serviceEndPoint = serviceHost.AddServiceEndpoint(typeof(T).FullName, new BasicHttpBinding(), baseAddress);

                serviceHost.Open();

                CUT = new ChannelFactory<T>(serviceEndPoint).CreateChannel();

                _isInitialized = true;

            }

        }