Question

If I have

class ObjA {   public ObjB B; } class ObjB {   public bool Val; } 

and

class ObjectToMock {   public DoSomething(ObjA obj){...} } 

Is there any way to define an expectation that not only will DoSomething get called but that obj.B.Val == true?

I have tried

Expect.Call(delegate {      mockObj.DoSomething(null); }).Constraints(new PropertyIs('B.Val', true)); 

but it seems to fail no matter what the value is.

Answer 1

You can try using Is.Matching() and providing a predicate constraint (moved out-of line for clarity):

    Predicate nestedBValIsTrue = delegate(ObjA a) { return a.B.Val == true;};     Expect.Call( delegate {mockobj.DoSomething(null);})            .Constraints( Is.Matching(nestedBValIsTrue));