assertThat(list.getFirstEntry(), is(nullValue()));
        assertThat(list.getLastEntry(), is(nullValue()));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testGetEntry() throws Exception {
        list.addLast("1");
        list.addLast("2");
        list.addLast("3");
        assertThat(list.getEntry(0).getElement(), is("1"));

              ImmutableRangeMap.<Integer, Integer>builder().put(range1, 1).put(range2, 2).build();
          assertEquals(range1.span(range2), rangemap.span());
        }
      }
    }
  }

  public void testGetEntry() {
    for (Range<Integer> range1 : RANGES) {
      for (Range<Integer> range2 : RANGES) {
        if (!range1.isConnected(range2) || range1.intersection(range2).isEmpty()) {

              ImmutableRangeMap.<Integer, Integer>builder().put(range1, 1).put(range2, 2).build();
          assertEquals(range1.span(range2), rangemap.span());
        }
      }
    }
  }

  public void testGetEntry() {
    for (Range<Integer> range1 : RANGES) {
      for (Range<Integer> range2 : RANGES) {
        if (!range1.isConnected(range2) || range1.intersection(range2).isEmpty()) {