Program: 90555
Project: 90555
Buggy source:
@Override public void processAction(ActionRequest portletReq,ActionResponse portletResp) throws PortletException, IOException {
  LOGGER.entering(LOG_CLASS,"String_Node_Str");
  portletResp.setRenderParameters(portletReq.getParameterMap());
  long tid=Thread.currentThread().getId();
  portletReq.setAttribute(THREADID_ATTR,tid);
  StringWriter writer=new StringWriter();
  JSR286SpecTestCaseDetails tcd=new JSR286SpecTestCaseDetails();
  TestResult tr0=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE1);
  if (portletReq.getResponseContentType() != null && !portletReq.getResponseContentType().isEmpty())   tr0.setTcSuccess(true);
  tr0.writeTo(writer);
  TestResult tr1=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE2);
  Enumeration<String> contentTypesTr1=portletReq.getResponseContentTypes();
  if (contentTypesTr1 != null && contentTypesTr1.hasMoreElements() && !contentTypesTr1.nextElement().isEmpty())   tr1.setTcSuccess(true);
  tr1.writeTo(writer);
  TestResult tr2=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE3);
  if (portletReq.getResponseContentTypes().nextElement().equals(portletReq.getResponseContentType()))   tr2.setTcSuccess(true);
  tr2.writeTo(writer);
  TestResult tr3=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE4);
  if (portletReq.getResponseContentType().equals("String_Node_Str")) {
    tr3.setTcSuccess(true);
  }
 else {
    tr3.appendTcDetail("String_Node_Str" + portletReq.getResponseContentType());
  }
  tr3.writeTo(writer);
  TestResult tr4=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE5);
  if (portletReq.getResponseContentType().equals("String_Node_Str")) {
    tr4.setTcSuccess(true);
  }
 else {
    tr4.appendTcDetail("String_Node_Str" + portletReq.getResponseContentType());
  }
  tr4.writeTo(writer);
  TestResult tr5=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_WINDOWID4);
  String tr5SessionAttribute=(String)portletReq.getPortletSession().getAttribute("String_Node_Str" + portletReq.getWindowID() + "String_Node_Str",APPLICATION_SCOPE);
  if (tr5SessionAttribute != null && tr5SessionAttribute.equals(portletReq.getWindowID())) {
    tr5.setTcSuccess(true);
  }
 else {
    tr5.appendTcDetail("String_Node_Str" + portletReq.getWindowID() + "String_Node_Str");
  }
  tr5.writeTo(writer);
  TestResult tr6=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE6);
  if (!StringUtils.containsIgnoreCase(portletReq.getResponseContentType(),portletReq.getCharacterEncoding()))   tr6.setTcSuccess(true);
  tr6.writeTo(writer);
  TestResult tr7=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE7);
  Enumeration<String> contentTypesTr7=portletReq.getResponseContentTypes();
  if (contentTypesTr7.nextElement().equals("String_Node_Str") && !contentTypesTr7.hasMoreElements())   tr7.setTcSuccess(true);
  tr7.writeTo(writer);
  portletReq.getPortletSession().setAttribute(Constants.RESULT_ATTR_PREFIX + "String_Node_Str",writer.toString(),APPLICATION_SCOPE);
}

Fixed version (ground truth):
@Override public void processAction(ActionRequest portletReq,ActionResponse portletResp) throws PortletException, IOException {
  LOGGER.entering(LOG_CLASS,"String_Node_Str");
  portletResp.setRenderParameters(portletReq.getParameterMap());
  long tid=Thread.currentThread().getId();
  portletReq.setAttribute(THREADID_ATTR,tid);
  StringWriter writer=new StringWriter();
  JSR286SpecTestCaseDetails tcd=new JSR286SpecTestCaseDetails();
  TestResult tr0=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE1);
  if (portletReq.getResponseContentType() != null && !portletReq.getResponseContentType().isEmpty())   tr0.setTcSuccess(true);
  tr0.writeTo(writer);
  TestResult tr1=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE2);
  Enumeration<String> contentTypesTr1=portletReq.getResponseContentTypes();
  if (contentTypesTr1 != null) {
    List<String> list=Collections.list(contentTypesTr1);
    if (list.isEmpty()) {
      tr1.appendTcDetail("String_Node_Str");
    }
 else {
      if (list.get(0).isEmpty()) {
        tr1.appendTcDetail("String_Node_Str");
      }
 else {
        tr1.setTcSuccess(true);
      }
    }
  }
 else {
    tr1.appendTcDetail("String_Node_Str");
  }
  tr1.writeTo(writer);
  TestResult tr2=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE3);
  Enumeration<String> contentTypesTr2=portletReq.getResponseContentTypes();
  if (contentTypesTr2 != null) {
    List<String> list=Collections.list(contentTypesTr2);
    if (list.isEmpty()) {
      tr2.appendTcDetail("String_Node_Str");
    }
 else {
      if (!list.get(0).equals(portletReq.getResponseContentType())) {
        tr2.appendTcDetail("String_Node_Str");
      }
 else {
        tr2.setTcSuccess(true);
      }
    }
  }
 else {
    tr2.appendTcDetail("String_Node_Str");
  }
  tr2.writeTo(writer);
  TestResult tr3=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE4);
  if (portletReq.getResponseContentType().equals("String_Node_Str")) {
    tr3.setTcSuccess(true);
  }
 else {
    tr3.appendTcDetail("String_Node_Str" + portletReq.getResponseContentType());
  }
  tr3.writeTo(writer);
  TestResult tr4=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE5);
  if (portletReq.getResponseContentType().equals("String_Node_Str")) {
    tr4.setTcSuccess(true);
  }
 else {
    tr4.appendTcDetail("String_Node_Str" + portletReq.getResponseContentType());
  }
  tr4.writeTo(writer);
  TestResult tr5=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_WINDOWID4);
  String tr5SessionAttribute=(String)portletReq.getPortletSession().getAttribute("String_Node_Str" + portletReq.getWindowID() + "String_Node_Str",APPLICATION_SCOPE);
  if (tr5SessionAttribute != null && tr5SessionAttribute.equals(portletReq.getWindowID())) {
    tr5.setTcSuccess(true);
  }
 else {
    tr5.appendTcDetail("String_Node_Str" + portletReq.getWindowID() + "String_Node_Str");
  }
  tr5.writeTo(writer);
  TestResult tr6=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE6);
  if (!StringUtils.containsIgnoreCase(portletReq.getResponseContentType(),portletReq.getCharacterEncoding()))   tr6.setTcSuccess(true);
  tr6.writeTo(writer);
  TestResult tr7=tcd.getTestResultFailed(V2ADDLREQUESTTESTS_SPEC2_11_ACTIONREQ_CONTENTTYPE7);
  Enumeration<String> contentTypesTr7=portletReq.getResponseContentTypes();
  if (contentTypesTr7.nextElement().equals("String_Node_Str") && !contentTypesTr7.hasMoreElements())   tr7.setTcSuccess(true);
  tr7.writeTo(writer);
  portletReq.getPortletSession().setAttribute(Constants.RESULT_ATTR_PREFIX + "String_Node_Str",writer.toString(),APPLICATION_SCOPE);
}