@Test
  public void testGetAllStructFieldRefs() {

    List<? extends StructField> fields = target.getAllStructFieldRefs();

    for (int i = 0; i < _Fields.values().length; i++) {

      _Fields f = _Fields.values()[i];

      StructField sf = fields.get(i);

      assertEquals(f.getFieldName().toLowerCase(), sf.getFieldName());
    }
  }
  @Test
  public void testList() {

    List<StructField> fields = target.list(ThadoopSample.metaDataMap);

    for (int i = 0; i < _Fields.values().length; i++) {

      _Fields f = _Fields.values()[i];

      StructField sf = fields.get(i);

      assertEquals(f.getFieldName().toLowerCase(), sf.getFieldName());
    }
  }