Program: 69362
Project: 69362
Buggy source:
private Results initFormItemResult(FormLayoutContainer layoutCont,TestPlanNode node,Map<Identifier,AssessmentItemRef> identifierToRefs){
  TestPlanNodeKey testPlanNodeKey=node.getKey();
  Identifier identifier=testPlanNodeKey.getIdentifier();
  AssessmentItemRef itemRef=identifierToRefs.get(identifier);
  ResolvedAssessmentItem resolvedAssessmentItem=resolvedAssessmentTest.getResolvedAssessmentItem(itemRef);
  AssessmentItem assessmentItem=resolvedAssessmentItem.getRootNodeLookup().extractIfSuccessful();
  QTI21QuestionType type=QTI21QuestionType.getType(assessmentItem);
  Results r=new Results(false,type.getCssClass());
  r.setTitle(node.getSectionPartTitle());
  r.setSessionStatus("String_Node_Str");
  ItemSessionState sessionState=testSessionState.getItemSessionStates().get(testPlanNodeKey);
  if (sessionState != null) {
    r.setSessionState(sessionState);
    SessionStatus sessionStatus=sessionState.getSessionStatus();
    if (sessionState != null) {
      r.setSessionStatus(translate("String_Node_Str" + sessionStatus.toQtiString()));
    }
  }
  ItemResult itemResult=assessmentResult.getItemResult(identifier.toString());
  if (itemResult != null) {
    extractOutcomeVariable(itemResult.getItemVariables(),r);
  }
  List<Interaction> interactions=assessmentItem.getItemBody().findInteractions();
  for (  Interaction interaction : interactions) {
    if (interaction instanceof PositionObjectInteraction || interaction instanceof EndAttemptInteraction) {
      continue;
    }
    String responseId="String_Node_Str" + count++;
    InteractionResultFormItem responseFormItem=new InteractionResultFormItem(responseId,interaction,resolvedAssessmentItem);
    initInteractionResultFormItem(responseFormItem,sessionState);
    layoutCont.add(responseId,responseFormItem);
    String solutionId="String_Node_Str" + count++;
    InteractionResultFormItem solutionFormItem=new InteractionResultFormItem(solutionId,interaction,resolvedAssessmentItem);
    solutionFormItem.setShowSolution(true);
    initInteractionResultFormItem(solutionFormItem,sessionState);
    layoutCont.add(solutionId,solutionFormItem);
    r.getInteractionResults().add(new InteractionResults(responseFormItem,solutionFormItem));
  }
  return r;
}

Fixed version (ground truth):
private Results initFormItemResult(FormLayoutContainer layoutCont,TestPlanNode node,Map<Identifier,AssessmentItemRef> identifierToRefs){
  TestPlanNodeKey testPlanNodeKey=node.getKey();
  Identifier identifier=testPlanNodeKey.getIdentifier();
  AssessmentItemRef itemRef=identifierToRefs.get(identifier);
  ResolvedAssessmentItem resolvedAssessmentItem=resolvedAssessmentTest.getResolvedAssessmentItem(itemRef);
  AssessmentItem assessmentItem=resolvedAssessmentItem.getRootNodeLookup().extractIfSuccessful();
  QTI21QuestionType type=QTI21QuestionType.getType(assessmentItem);
  Results r=new Results(false,type.getCssClass());
  r.setTitle(node.getSectionPartTitle());
  r.setSessionStatus("String_Node_Str");
  ItemSessionState sessionState=testSessionState.getItemSessionStates().get(testPlanNodeKey);
  if (sessionState != null) {
    r.setSessionState(sessionState);
    SessionStatus sessionStatus=sessionState.getSessionStatus();
    if (sessionState != null) {
      r.setSessionStatus(translate("String_Node_Str" + sessionStatus.toQtiString()));
    }
  }
  ItemResult itemResult=assessmentResult.getItemResult(identifier.toString());
  if (itemResult != null) {
    extractOutcomeVariable(itemResult.getItemVariables(),r);
  }
  List<Interaction> interactions=assessmentItem.getItemBody().findInteractions();
  for (  Interaction interaction : interactions) {
    if (interaction instanceof PositionObjectInteraction || interaction instanceof EndAttemptInteraction) {
      continue;
    }
    String responseId="String_Node_Str" + count++;
    InteractionResultFormItem responseFormItem=new InteractionResultFormItem(responseId,interaction,resolvedAssessmentItem);
    initInteractionResultFormItem(responseFormItem,sessionState);
    layoutCont.add(responseId,responseFormItem);
    InteractionResultFormItem solutionFormItem;
    if (interaction instanceof ExtendedTextInteraction || interaction instanceof UploadInteraction || interaction instanceof DrawingInteraction) {
      solutionFormItem=null;
    }
 else {
      String solutionId="String_Node_Str" + count++;
      solutionFormItem=new InteractionResultFormItem(solutionId,interaction,resolvedAssessmentItem);
      solutionFormItem.setShowSolution(true);
      initInteractionResultFormItem(solutionFormItem,sessionState);
      layoutCont.add(solutionId,solutionFormItem);
    }
    r.getInteractionResults().add(new InteractionResults(responseFormItem,solutionFormItem));
  }
  return r;
}