Question

The using below hits an external resource that I do not want to actually hit. I want to test someResult and the code that uses it, but every time I run my unit test, this code still tries to hit the real web service. How do I use moq to fake the real call to the web service, but not mock the rest of the code within the using?

public IMyInterface.SomeMethod()
{    
     // hits a web service
     using ( mySoapClient client = new mySoapClient() )
     {
          var someResult = client.DoSomething();
       ...
       ...
     }
}


[TestMethod()]
public void SomeMethodTest()
{
    IMyInterface target = new MyInterface();
    target.SomeMethod();

    // Assert....
}

Answer 1

You need to decouple the web service implementation from the consumer

public class ClassIWantToTest
{
      public ClassIWantToTest(IServiceIWantToCall service) {}

      public void SomeMethod()
      {
           var results = service.DoSomething();
           //Rest of the logic here
      }
}

Now you can use Moq to mock the IServiceIWantToCall in order to test the logic of SomeMethod