private Document createDocument(Person person) {
   Document doc = new Document();
   doc.add(new Field("id", person.getId(), Store.YES, Index.NOT_ANALYZED));
   doc.add(new Field("name", person.getName(), Store.YES, Index.NOT_ANALYZED));
   doc.add(
       new Field("birthDate", person.getBirthDate().toString(), Store.YES, Index.NOT_ANALYZED));
   return doc;
 }
 @Test
 public void Equals_By_Birth_Date() throws Exception {
   testQuery(person.birthDate.eq(clooney.getBirthDate()), "birthDate:1961-04-06", 1);
 }