@Test
 public void _getIdValue() {
   assertThat(this.sut.getIdValue(null, 0), is(String.valueOf((Object) null)));
   assertThat(this.sut.getIdValue(SortRule.ASC, 0), is(String.valueOf(SortRule.ASC.ordinal())));
   assertThat(this.sut.getIdValue(SortRule.DESC, 0), is(String.valueOf(SortRule.DESC.ordinal())));
 }
 @Test
 public void _getDisplayValue() {
   final Object ex = SortRule.ASC.getLabel();
   assertThat(this.sut.getDisplayValue(SortRule.ASC), is(ex));
 }