Problems mocking encapsulated(nested) Classes

Hi
Welcome to TypeMock forum 8)
Can you please post the test code so I can see what's the problem?

below is the test code
=======================
[Test]
[VerifyMocks]
public void mockDummyUpper()
{
// Start Mocking
using (RecordExpectations recorder = new RecordExpectations())
{
// Lets mock the DummyUpper and DummyMiddle class
recorder.MockAllInstances = true;

//mocks the instantiation of the dummy class
DummyUpper dupper = new DummyUpper();

DummyMiddle dmiddle = new DummyMiddle();


recorder.ExpectAndReturn(dupper.getDummyLowerValue(), 11).RepeatAlways();
recorder.ExpectAndReturn(dupper.dm.doSomeCalc(1), 33);
recorder.ExpectAndReturn(DummyLower.DummyValue(1), 21).RepeatAlways();
recorder.ExpectAndReturn(dmiddle.GetDelta, 12).RepeatAlways();
recorder.ExpectAndReturn(dmiddle.doSomeCalc(1), 22).RepeatAlways();

}
// END OF MOCK SETUP

DummyUpper upper2 = new DummyUpper();

DummyMiddle dmiddle2 = new DummyMiddle();


Assert.AreEqual(upper2.dm.doSomeCalc(1),33);

Assert.AreEqual(dmiddle2.GetDelta,12);

Assert.AreEqual(dmiddle2.doSomeCalc(1), 22);

}
========================================
below is the class definition for DummyUpper and DummyMiddle
===========================================
public class DummyUpper
{
public DummyMiddle dm;

public int ReturnFive()
{
int five = 5;
return five;
}

public int getDummyLowerValue()
{
return DummyLower.DummyValue(10);
}

public DummyUpper()
{
dm = new DummyMiddle();
}
}
=======================================
public class DummyMiddle
{
public int GetDelta
{
get
{
return this.delta;
}

set
{
this.delta = value;
}
}

private int delta;

public int doSomeCalc(int val)
{
return (val*10);
}

public DummyMiddle()
{
this.delta = 100;
}


}
==================================

hi
I'm still missing the definition to DummyLower class
But i can see a problem here:
You are mocking all calls to getDummyLowerValue
as a result DummyLower.DummyValue() method never
get called. My guess is that it leads to Verify Exception.
Could it be the the cause to the error?

:idea: When you run into this kind of problems use TypeMock Tracer

If I'm wrong please post definition to DummyLower class.

hi

below is DummyLower class
======================
public class DummyLower
{
public static int DummyValue(int i)
{
return (10 * i);
}

}
========================

thanks.

Hi
ok the problem is dm is not initialized since the constructor of DummyUpper
is mocked.
Another thing is that TypeMock can not mock fields.
This is the reason for the NullReferenceException you get

The solution is simple
Replace:

recorder.ExpectAndReturn(dupper.dm.doSomeCalc(1), 33);

with:

recorder.ExpectAndReturn(dmiddle.doSomeCalc(1), 33);

Hope it helps.

I really wanted to confirm if TypeMock can mock fields and you have confirmed this, would just have to change the design of my classes.

cheers.