@Test
  public void testCompareTo() {
    assertTrue(one.compareTo(two) < 0);
    assertTrue(two.compareTo(one) > 0);
    assertTrue(one.compareTo(zero) > 0);
    assertTrue(zero.compareTo(two) < 0);
  }
Testcases for {@link UnsignedInt128}

This code was based on code from Microsoft's PolyBase.
common/src/test/org/apache/hadoop/hive/common/type/TestUnsignedInt128.java