Hi there,
I am not sure whether it is possible to stub internal classes with Rhino.
And, actually, I am doubt it should allow us to do so.
As I see, you need to perform tests based on the Method() function, however
it uses some other classes while do some stuff.
So, if you need to create a stub for the class containing Method() method
you need to do two things:
1. make Method() virtual like this
public virtual void Method()
{
... other stuff going on here.....
this.someClass.PerformAction().UpdateModelWithResults(this.model);
}
This will let Rhino to stub this method.
2. Generate a stub for this method as follows:
myStub.Stub(c => c.Method()).Return(somethingIReallyNeedItToReturn);
// This way you should not be hurt by this.someClass that sits in
original implementation of Method() function as it will be substituted by
Rhino.Mocks.
Instead, if you need to stub internal classes or both (the one that contains
Method() function and internal stuff) you need to create all the stubs
yourself.
My guess, this is because Rhino Mocks cannot guess what data should be
passed into functions and what should be returned by methods.
If, for example, this.someClass variable is being instantiated in
constructor then you will have to write the code similar to the following:
var someClassStub = MockRepository.GenerateStub<SomeClass>();
someClassStub.Stub(s => s.PerformAction).Return( <something that contains
UpdateModelWithResults function>;
var myStub = MockRepository.GenerateStub<SUT>(someClassStub);
So, when you call Method() function the someClassStub stub will be called.
But I would not recommend the second approach based on the Tim's reply.
Hope this helps.
Best Regards,
Mik
On Fri, Feb 6, 2009 at 1:02 AM, gbrunton <[email protected]> wrote:
>
> Just wondering what your thoughts are on the following...
>
> ... some method in a class that I will be testing ...
> public void Method()
> {
> ... other stuff going on here.....
> this.someClass.PerformAction().UpdateModelWithResults(this.model);
> }
>
> now in a test fixture somewhere...
> [SetUp]
> public void SetUp()
> {
> this.someClass = MockRepository.GenerateStub<SomeClass>():
> }
>
> [Test]
> public void TestingOtherStuffGoingOn()
> {
> ... some arranging ...
>
> this.CreateSUT().Method();
>
> ... some assertions ...
> }
>
>
> Now in my TestingOtherStuffGoingOn test I could care less about the
> someClass.PerformAction() method call because this is being testing in
> some other method. But I can't test the "other stuff going on here"
> logic without stubbing out another object that contains the
> UpdateModelWithResults() method.
>
> Is there anyway (or would it even make sense) for rhinomocks to
> automatically create a stub of the class that contains the
> UpdateModelWithResults() method instead of a null value for the
> PerformAction() method?
>
> Thoughts?
>
> Thanks, Gary
> >
>
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