TEST: avoid multiple declaration of same function over different compilation units

Testing/Code/Fuzzy/otbMassOfBelief.cxx

@@ -49,7 +49,9 @@ int otbMassOfBelief(int itkNotUsed(argc), char* itkNotUsed(argv)[])
 
   std::cout<<massFunction<<std::endl;
 
-  std::cout<<"Removing mass from set " <<set4<<std::endl;
+  std::cout<<"Removing mass from set ";
+  MassOfBeliefFunctionType::PrintLabelSet(std::cout, set4);
+  std::cout<<std::endl;
 
   massFunction->RemoveMass(set4);
 
@@ -60,7 +62,11 @@ int otbMassOfBelief(int itkNotUsed(argc), char* itkNotUsed(argv)[])
 
   std::cout<<massFunction<<std::endl;
 
-  std::cout<<"Removing mass "<<set2<<" and adding mass "<<set3<<std::endl;
+  std::cout<<"Removing mass ";
+  MassOfBeliefFunctionType::PrintLabelSet(std::cout, set2);
+  std::cout<<" and adding mass ";
+  MassOfBeliefFunctionType::PrintLabelSet(std::cout, set3);
+  std::cout<<std::endl;
   massFunction->RemoveMass(set2);
   massFunction->SetMass(set3, 0.6);
 
@@ -71,15 +77,23 @@ int otbMassOfBelief(int itkNotUsed(argc), char* itkNotUsed(argv)[])
 
   std::cout<<massFunction<<std::endl;
 
-  std::cout<<"Belief of "<<set3<<" is "<<massFunction->GetBelief(set3)<<std::endl;
-  std::cout<<"Plausibility of "<<set3<<" is "<<massFunction->GetPlausibility(set3)<<std::endl;
+  std::cout<<"Belief of ";
+  MassOfBeliefFunctionType::PrintLabelSet(std::cout, set3);
+  std::cout<<" is "<<massFunction->GetBelief(set3)<<std::endl;
+  
+  std::cout<<"Plausibility of ";
+  MassOfBeliefFunctionType::PrintLabelSet(std::cout, set3);
+  std::cout<<" is "<<massFunction->GetPlausibility(set3)<<std::endl;
 
   MassOfBeliefFunctionType::LabelSetType otherSet;
   otherSet.insert("cat");
   otherSet.insert("dog");
   otherSet.insert("bird");
 
-  std::cout<<"Initializing with power set from universal set " << otherSet<<std::endl;
+  std::cout<<"Initializing with power set from universal set ";
+  MassOfBeliefFunctionType::PrintLabelSet(std::cout, otherSet);
+  std::cout<<std::endl;
+  
   massFunction->InitializePowerSetMasses(otherSet);
 
   std::cout<<massFunction<<std::endl;

Testing/Code/Fuzzy/otbMassOfBeliefDSApplied.cxx

@@ -30,12 +30,6 @@ typedef otb::MassOfBelief<std::string>  MassOfBeliefFunctionType;
 typedef otb::JointMassOfBeliefFilter<MassOfBeliefFunctionType>
                                         JointMassOfBeliefFilterType;
 
-std::ostream& operator <<(std::ostream& os, const MassOfBeliefFunctionType::LabelSetType& l )
-{
-  MassOfBeliefFunctionType::PrintLabelSet(os, l);
-  return os;
-}
-
 int otbMassOfBeliefDSApplied(int itkNotUsed(argc), char* argv[])
 {
   const char * hyp_1  = argv[1];
@@ -98,7 +92,11 @@ int otbMassOfBeliefDSApplied(int itkNotUsed(argc), char* argv[])
   std::cout<<mass2<<std::endl;
 
   std::cout << jointMass << std::endl;
-  std::cout << "Considered Hypothesis : " << Hyp << std::endl;
+  
+  std::cout << "Considered Hypothesis : ";
+  MassOfBeliefFunctionType::PrintLabelSet(std::cout, Hyp);
+  std::cout << std::endl;
+  
   std::cout << "Belief(Hyp) : "
             << jointMass->GetBelief(Hyp)
             << "  -  Plausibility(Hyp) : "