Mock a base class method called from a derived class constructor

I'm not an expert in Isolator's constructor-related mocking abilities so the good folks at Typemock may have a better solution than this one.

By calling a base method from a derived constructor not directly but through a fakable static pass-through method taking a 'this' argument, you can achieve the base method mocking you seek for your derived constructor:

public class Base
{
	public void BaseMethod()
	{
		throw new NotImplementedException();
	}
}

public class Derived : Base
{
	public Derived()
	{
		CallBaseMethod(this);
	}

	public static void CallBaseMethod(Derived derived)
	{
		derived.BaseMethod();
	}
}

[TestFixture, Isolated]
public class DerivedTests
{
	[Test]
	public void Ctor_CallsCallBaseMethod()
	{
		Isolate.WhenCalled(() => Derived.CallBaseMethod(null)).IgnoreCall();
		//
		var derived = new Derived();
		//
		Isolate.Verify.WasCalledWithExactArguments(() => Derived.CallBaseMethod(derived));
	}

	[Test]
	public void CallBaseMethod_CallsBaseMethod()
	{
		var fakeDerived = Isolate.Fake.Instance<Derived>();
		//
		Derived.CallBaseMethod(fakeDerived);
		//
		Isolate.Verify.WasCalledWithExactArguments(() => fakeDerived.BaseMethod());
	}
}