assertFalse(rangeSet.contains(5));
    assertFalse(rangeSet.contains(0));

    RangeSet<Integer> expectedComplement = TreeRangeSet.create();
    expectedComplement.add(Range.lessThan(1));
    expectedComplement.add(Range.atLeast(5));

    assertEquals(expectedComplement, rangeSet.complement());
  }

  public void testSingleBoundedBelowRange() {

      if (range.isConnected(subRange)) {
        expected.add(range.intersection(subRange));
      }
    }
    return expected;
  }

  private RangeSet<Integer> expectedComplement(RangeSet<Integer> rangeSet) {
    RangeSet<Integer> expected = TreeRangeSet.create();
    expected.add(Range.<Integer>all());
    expected.removeAll(rangeSet);
    return expected;
  }