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Fody AddIn that allows faking your types without writing interfaces for testing purposes only

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philippdolder/EnableFaking.Fody

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This is an add-in for Fody

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Introduction to Fody

Change class members to virtual as part of your build to help making TDD less effort.

Now you ask:

There is Virtuosity already. Why would I use EnableFaking instead?"

The answer:

EnableFaking intends to only make those types fakeable (make members virtual) that you otherwise would need to define an interface solely to be able to use the type with a fake framework like Fake It Easy.

Instead of

    public class MyImplementation : IMyInterface
    {
        public void MyMethod()
        {
        }
    }
    
    public interface IMyInterface
    {
        void MyMethod();
    }

you only have to write

    public class MyImplementation
    {
        public void MyMethod()
        {
        }
    }

and all other classes remain untouched.

Nuget package

There is a nuget package available here http://nuget.org/packages/EnableFaking.Fody

What does it do?

Selects all classes meeting the following criteria

  • public
  • not a container (has only constructors and properties)
  • not implementing any interfaces (I suggest faking the interfaces in these cases instead of the class)
  • not sealed
  • not nested

Selects all members from the selected types that are

  • public
  • not static
  • not virtual
  • not a constructor

and changes them to virtual.

All calls to the now virtual members are changed to virtual calls.

If EnableFaking does not virtualize a public class you can add a DoVirtualizeAttribute on your class.

Define the attribute anywhere in your code (your code does not have a dependency to EnableFaking)

    [AttributeUsage(AttributeTargets.Class)]
    public class DoVirtualizeAttribute : Attribute
    {
    }

Add it to the class you want to be virtualized

    [DoVirtualize]
    public class YourClass
    {
    }

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Fody AddIn that allows faking your types without writing interfaces for testing purposes only

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