ENH: use assertions to make sure all required parameters have been defined in DoInitSpecialization

Modules/Applications/AppClassification/app/otbVectorRegression.cxx

@@ -90,6 +90,7 @@ VectorRegression
   SetOfficialDocLink();
 }
 
+// Confidence map computation is not support for regression.
 template<>
 bool
 VectorRegression

Modules/Applications/AppClassification/include/otbVectorPrediction.hxx

@@ -34,7 +34,14 @@ VectorPrediction <RegressionMode>
 ::DoInit()
 {
   DoInitSpecialization();
-  //TODO add assert to check that parameters has been correctly defined
+  
+  // Assert that the all needed parameters have ben definied in DoInitSpecialization
+  assert(GetParameterByKey("in") != nullptr);
+  assert(GetParameterByKey("instat") != nullptr);
+  assert(GetParameterByKey("model") != nullptr);
+  assert(GetParameterByKey("cfield") != nullptr);
+  assert(GetParameterByKey("feat") != nullptr);
+  assert(GetParameterByKey("out") != nullptr);
 }
 
 template <bool RegressionMode>
@@ -316,7 +323,6 @@ VectorPrediction <RegressionMode>
 
   clock_t toc = clock();
   otbAppLogINFO( "Elapsed: "<< ((double)(toc - tic) / CLOCKS_PER_SEC)<<" seconds.");
-
 }
 
 } //end namespace wrapper