expectedRangesByUpperBound,
            new TreeRangeSet.RangesByUpperBound<Integer>(rangeSet.rangesByLowerBound),
            CUTS_TO_TEST);
      }
    }
  }

  public void testMergesConnectedWithOverlap() {
    TreeRangeSet<Integer> rangeSet = TreeRangeSet.create();
    rangeSet.add(Range.closed(1, 4));
    rangeSet.add(Range.open(2, 6));
    testInvariants(rangeSet);