@Test
public void testIndexRangeToString() {

  CRange range = new CRange();
  CRange range2 = new CRange(new byte[] { 0 });
  CRange range3 = new CRange(new byte[] { 0 }, new byte[] { 3 });
  Assert.assertEquals("IndexRangeConstraint()", new IndexRangeConstraint(
      null, null).toString());
  Assert.assertNotSame("IndexRangeConstraint()", new IndexRangeConstraint(
      null, range).toString());
  Assert.assertNotSame("IndexRangeConstraint()", new IndexRangeConstraint(
      null, range2).toString());
  Assert.assertNotSame("IndexRangeConstraint()", new IndexRangeConstraint(
      null, range3).toString());
  Assert.assertNotSame(new IndexRangeConstraint(null, range3).toString(),
      new IndexRangeConstraint(null, range2).toString());
}