public void testGetElementFieldsWithoutNatures() {
ClassInfo classInfo = new ClassInfo(new JClass("test"));
FieldInfoFactory factory = new FieldInfoFactory();
FieldInfo field = factory.createFieldInfo(new XSClass(
new JClass("Book")), "isbn");
classInfo.addFieldInfo(field);
classInfo.addNature(JDOClassInfoNature.class.getName());
JDOClassInfoNature jdo = new JDOClassInfoNature(classInfo);
List jdoFields = jdo.getFields();
assertEquals(0, jdoFields.size());