  @Test
  public void oneDimensionAndRootNodeOnly() {

    for (int i = 0; i < 5; ++i) {
      Pow2LengthBitSetRangeFactory<String> range =
          Pow2LengthBitSetRangeFactory.create(ImmutableList.<Integer>of(i));
      checkSingleElement(range, i);
    }
  }