@Test
public void isWrappingTest() {

  RingRange r0To0 = new RingRange(BigInteger.valueOf(0L), BigInteger.valueOf(0L));
  assertTrue(r0To0.isWrapping());
  RingRange r0To1 = new RingRange(BigInteger.valueOf(0L), BigInteger.valueOf(1L));
  assertFalse(r0To1.isWrapping());
  RingRange r1To0 = new RingRange(BigInteger.valueOf(1L), BigInteger.valueOf(0L));
  assertTrue(r1To0.isWrapping());
}