/** Test of toString method, of class DefaultOrdinalReferenceSystem. */
 @Test
 public void testToString() {
   String result = ordinalReferenceSystem1.toString();
   assertFalse(ordinalReferenceSystem2.toString().equals(result));
 }
 /** Test of equals method, of class DefaultOrdinalReferenceSystem. */
 @Test
 public void testEquals() {
   assertFalse(ordinalReferenceSystem1.equals(null));
   assertEquals(ordinalReferenceSystem1, ordinalReferenceSystem1);
   assertFalse(ordinalReferenceSystem1.equals(ordinalReferenceSystem2));
 }
 /** Test of hashCode method, of class DefaultOrdinalReferenceSystem. */
 @Test
 public void testHashCode() {
   int result = ordinalReferenceSystem1.hashCode();
   assertFalse(ordinalReferenceSystem2.hashCode() == result);
 }
 /** Test of getOrdinalEraSequence method, of class DefaultOrdinalReferenceSystem. */
 @Test
 public void testGetOrdinalEraSequence() {
   Collection<OrdinalEra> result = ordinalReferenceSystem1.getOrdinalEraSequence();
   assertEquals(ordinalReferenceSystem2.getOrdinalEraSequence(), result);
 }