}

  public void testHeadSet_tooSmall() {
    assertThat(ContiguousSet.create(Range.closed(1, 3), integers()).headSet(0)).isEmpty();
  }

  public void testTailSet() {
    ImmutableSortedSet<Integer> set = ContiguousSet.create(Range.closed(1, 3), integers());
    assertThat(set.tailSet(Integer.MIN_VALUE)).containsExactly(1, 2, 3).inOrder();

              filter(createUnfiltered(contents), EVEN).headSet(i));
        }
      }
    }

    @SuppressWarnings("unchecked")
    public void testTailSet() {
      for (List<Integer> contents : SAMPLE_INPUTS) {
        for (int i = 0; i < 10; i++) {
          assertEquals(
              filter((C) createUnfiltered(contents).tailSet(i), EVEN),

  }

  public void testHeadSet_tooSmall() {
    assertThat(ContiguousSet.create(Range.closed(1, 3), integers()).headSet(0)).isEmpty();
  }

  public void testTailSet() {
    ImmutableSortedSet<Integer> set = ContiguousSet.create(Range.closed(1, 3), integers());
    assertThat(set.tailSet(Integer.MIN_VALUE)).containsExactly(1, 2, 3).inOrder();