@Test
 public void testGetClauseFromXmlEmptyValue() throws Exception {
   Document doc = new Document("<customfield_100 monkey=''/>");
   Element el = doc.getElement("customfield_100");
   final SimpleCustomFieldClauseXmlHandler handler =
       new SimpleCustomFieldClauseXmlHandler("monkey", Operator.GREATER_THAN);
   assertNull(handler.convertXmlToClause(el).getClause());
 }
 @Test
 public void testGetClauseFromXmlHappyPath() throws Exception {
   Document doc = new Document("<customfield_100 monkey='bob'/>");
   Element el = doc.getElement("customfield_100");
   final TerminalClauseImpl expected =
       new TerminalClauseImpl("cf[100]", Operator.GREATER_THAN, "bob");
   final SimpleCustomFieldClauseXmlHandler handler =
       new SimpleCustomFieldClauseXmlHandler("monkey", Operator.GREATER_THAN);
   assertEquals(expected, handler.convertXmlToClause(el).getClause());
 }