@Test
  public void testUnsignedInt128UnsignedInt128() {
    assertEquals(1L, new UnsignedInt128(one).asLong());
    assertEquals(2L, new UnsignedInt128(two).asLong());
  }
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