Program: 23948
Project: 23948
Buggy source:
@SuppressWarnings("String_Node_Str") private void test(Resource resource,String expression,int count,String... types) throws FileNotFoundException, IOException, FHIRException {
  if (TestingUtilities.context == null)   TestingUtilities.context=SimpleWorkerContext.fromPack("String_Node_Str");
  FluentPathEngine fp=new FluentPathEngine(TestingUtilities.context);
  ExpressionNode node=fp.parse(expression);
  fp.check(null,resource.getResourceType().toString(),resource.getResourceType().toString(),node);
  List<Base> outcome=fp.evaluate(resource,node);
  if (fp.hasLog())   System.out.println(fp.takeLog());
  Assert.assertTrue(String.format("String_Node_Str",count,outcome.size()),outcome.size() == count);
  CommaSeparatedStringBuilder msg=new CommaSeparatedStringBuilder();
  for (  String t : types)   msg.append(t);
  for (  Base b : outcome) {
    boolean found=false;
    String type=b.fhirType();
    for (    String t : types)     if (type.equals(t))     found=true;
    Assert.assertTrue(String.format("String_Node_Str",type,msg),found);
  }
}

Fixed version (ground truth):
@SuppressWarnings("String_Node_Str") @Test public void test() throws FileNotFoundException, IOException, FHIRException, org.hl7.fhir.dstu3.exceptions.FHIRException {
  if (TestingUtilities.context == null)   TestingUtilities.context=SimpleWorkerContext.fromPack("String_Node_Str");
  if (fp == null)   fp=new FluentPathEngine(TestingUtilities.context);
  String input=test.getAttribute("String_Node_Str");
  String expression=XMLUtil.getNamedChild(test,"String_Node_Str").getTextContent();
  boolean fail="String_Node_Str".equals(XMLUtil.getNamedChild(test,"String_Node_Str").getAttribute("String_Node_Str"));
  Resource res=null;
  List<Base> outcome=new ArrayList<Base>();
  ExpressionNode node=fp.parse(expression);
  try {
    if (Utilities.noString(input))     fp.check(null,null,null,node);
 else {
      res=new XmlParser().parse(new FileInputStream(Utilities.path("String_Node_Str",input)));
      fp.check(res,res.getResourceType().toString(),res.getResourceType().toString(),node);
    }
    outcome=fp.evaluate(res,node);
    Assert.assertTrue(String.format("String_Node_Str",expression),!fail);
  }
 catch (  Exception e) {
    Assert.assertTrue(String.format("String_Node_Str" + e.getMessage(),expression),fail);
  }
  if ("String_Node_Str".equals(test.getAttribute("String_Node_Str"))) {
    boolean ok=fp.convertToBoolean(outcome);
    outcome.clear();
    outcome.add(new BooleanType(ok));
  }
  if (fp.hasLog())   System.out.println(fp.takeLog());
  List<Element> expected=new ArrayList<Element>();
  XMLUtil.getNamedChildren(test,"String_Node_Str",expected);
  Assert.assertTrue(String.format("String_Node_Str",expected.size(),outcome.size()),outcome.size() == expected.size());
  for (int i=0; i < Math.min(outcome.size(),expected.size()); i++) {
    String tn=expected.get(i).getAttribute("String_Node_Str");
    if (!Utilities.noString(tn)) {
      Assert.assertTrue(String.format("String_Node_Str",i,tn,outcome.get(i).fhirType()),tn.equals(outcome.get(i).fhirType()));
    }
    String v=expected.get(i).getTextContent();
    if (!Utilities.noString(v)) {
      Assert.assertTrue(String.format("String_Node_Str",i,outcome.get(i).fhirType()),outcome.get(i) instanceof PrimitiveType);
      Assert.assertTrue(String.format("String_Node_Str",i,v,outcome.get(i).toString()),v.equals(((PrimitiveType)outcome.get(i)).asStringValue()));
    }
  }
}