MVC Controller, testing a WCF service that is wrapped in a proxy - wcf

Question

I am trying to figure how to create tests for my controllers that are consuming a WCF service (via a proxy class)
The proxy class is pretty much identical to the one listed in this post http://blog.weminuche.net/2008/08/test-post.html
Base Controller
public abstract class ServiceProxyController<TService> : Controller
where TService : class
{
private readonly ServiceProxy<TService> _proxyHelper;
protected ServiceProxyController(string endpoint)
{
_proxyHelper = new ServiceProxy<TService>(endpoint);
}
private Stuff GetStuff(int num)
{
Call((service) => {
service.DoSomeStuff(num)
});
................
}
...........
}
Controller Implementation
public class MyController : ServiceProxyController<IService>
{
public MyController() : base("ServiceBindingName")
{
}
}
I want to be able to inject a proxy helper(???) into my controller so as I can mock it and therefor test the controller

Answer 1

How about injecting the proxy helper to the constructor (notice the introduction of an abstraction):
private readonly IServiceProxy<TService> _proxyHelper;
protected ServiceProxyController(IServiceProxy<TService> proxyHelper)
{
_proxyHelper = proxyHelper;
}
and the controller:
public MyController(IServiceProxy<TService> proxyHelper)
: base(proxyHelper)
{
}
This way in your unit test when instantiating the controller you could inject a mocked instance of the IServiceProxy<TService> interface.
You will then need to configure your DI framework to insert the proper implementation into the controller constructor which will wrap the actual ChannelFactory.

Answer 2

I just asked a similar question. I am injecting the service using structure map. I am dynamically creating a proxy using channel factory.
Look at this example for using Channel factory.
creating WCF ChannelFactory<T>
My question for your reference.
Rhinomocks - Mocking delegates
Note- Actually it was Darin who posted the ServiceInvoker