assertEquals(
        Range.atMost(Integer.MAX_VALUE),
        ContiguousSet.create(Range.<Integer>all(), integers()).range(OPEN, CLOSED));
  }

  public void testIntersection_empty() {
    ContiguousSet<Integer> set = ContiguousSet.closed(1, 3);
    ContiguousSet<Integer> emptySet = ContiguousSet.closedOpen(2, 2);
    assertEquals(ImmutableSet.of(), set.intersection(emptySet));

    assertFalse(range.encloses(Range.atLeast(3)));
    assertFalse(range.encloses(Range.atMost(3)));
    assertFalse(range.encloses(Range.<Integer>all()));
  }

  public void testIntersection_empty() {
    Range<Integer> range = Range.closedOpen(3, 3);
    assertEquals(range, range.intersection(range));

    IllegalArgumentException expected =

    assertEquals(
        Range.atMost(Integer.MAX_VALUE),
        ContiguousSet.create(Range.<Integer>all(), integers()).range(OPEN, CLOSED));
  }

  public void testIntersection_empty() {
    ContiguousSet<Integer> set = ContiguousSet.closed(1, 3);
    ContiguousSet<Integer> emptySet = ContiguousSet.closedOpen(2, 2);
    assertEquals(ImmutableSet.of(), set.intersection(emptySet));

    assertFalse(range.encloses(Range.atLeast(3)));
    assertFalse(range.encloses(Range.atMost(3)));
    assertFalse(range.encloses(Range.<Integer>all()));
  }

  public void testIntersection_empty() {
    Range<Integer> range = Range.closedOpen(3, 3);
    assertEquals(range, range.intersection(range));

    IllegalArgumentException expected =