Unit Test Assert.AreEqual failed

Question

I have a unit test for a method which gets an object from a collection. This keeps failing and I cannot see why, so I have created a very simple test below to create 2 suppl

Answer 1

//Given the following structure and an instance value, targetObj...

class BaseType
{
   private FeatureType Feature_1;
}

class TargetType : BaseType 
{
  ...
}

TargetType targetObj = new TargetType();

//...a private feature in a specific base class can be accessed as follows

PrivateType typeCast = new PrivateType(typeof( BaseType ));

PrivateObject privateObj = new PrivateObject(targetObj, typeCast);

//...and values can be retrieved and set as follows....

privateObj.SetField("Feature_1", (FeatureType) newValue );

FeatureType result = (FeatureType) privateObj.GetField("Feature_1");

/* With respect to the controversy around accessing private fields in unit tests, I believe it should never be used unless absolutely neccessary (i.e. time and expense management issues). */