assertEquals(
        Range.openClosed(0, 3),
        ContiguousSet.create(Range.closed(1, 3), integers()).range(OPEN, CLOSED));
    assertEquals(
        Range.openClosed(0, 3),
        ContiguousSet.create(Range.closedOpen(1, 4), integers()).range(OPEN, CLOSED));
    assertEquals(
        Range.openClosed(0, 3),

    // overlap above
    assertEquals(Range.closed(6, 8), range.intersection(Range.closed(6, 10)));

    // adjacent above
    assertEquals(Range.openClosed(8, 8), range.intersection(Range.openClosed(8, 10)));

    // separate above
    expected =
        assertThrows(
            IllegalArgumentException.class, () -> range.intersection(Range.closed(10, 12)));

    assertEquals(
        Range.openClosed(0, 3),
        ContiguousSet.create(Range.closed(1, 3), integers()).range(OPEN, CLOSED));
    assertEquals(
        Range.openClosed(0, 3),
        ContiguousSet.create(Range.closedOpen(1, 4), integers()).range(OPEN, CLOSED));
    assertEquals(
        Range.openClosed(0, 3),

          .add(Range.closed(2, 4))
          .add(Range.open(6, 7))
          .add(Range.closedOpen(8, 10))
          .add(Range.openClosed(15, 17))
          .build();

  private static final ImmutableRangeSet<Integer> RANGE_SET_TWO =
      ImmutableRangeSet.<Integer>builder()
          .add(Range.openClosed(0, 3))
          .add(Range.closed(5, 8))
          .add(Range.closedOpen(12, 15))
          .add(Range.open(19, 20))

    assertEquals(
        ImmutableMap.of(Range.closedOpen(5, 7), 1, Range.openClosed(9, 10), 2),
        sub.asMapOfRanges());
    assertEquals(
        ImmutableMap.of(Range.open(3, 7), 1, Range.openClosed(9, 10), 2, Range.closed(12, 16), 3),
        rangeMap.asMapOfRanges());

    sub.remove(Range.closed(3, 9));
    assertEquals(ImmutableMap.of(Range.openClosed(9, 10), 2), sub.asMapOfRanges());
    assertEquals(

        queryBuilder.add(Range.upTo(i, boundType));
        queryBuilder.add(Range.downTo(i, boundType));
      }
      queryBuilder.add(Range.singleton(i));
      queryBuilder.add(Range.openClosed(i, i));
      queryBuilder.add(Range.closedOpen(i, i));

      for (BoundType lowerBoundType : BoundType.values()) {
        for (int j = i + 1; j <= MAX_BOUND; j++) {

    assertEquals(set, Sets.subSet(set, Range.openClosed(0, 12)));
    assertEquals(ImmutableSortedSet.of(2, 4), Sets.subSet(set, Range.openClosed(0, 4)));
    assertEquals(ImmutableSortedSet.of(4, 6), Sets.subSet(set, Range.openClosed(2, 6)));
    assertEquals(ImmutableSortedSet.of(4, 6), Sets.subSet(set, Range.openClosed(3, 7)));
    assertEquals(empty, Sets.subSet(set, Range.openClosed(20, 30)));

 * <tr><td>{@code [a..b]}  <td>{@code {x | a <= x <= b}}<td>{@link Range#closed closed}
 * <tr><td>{@code (a..b]}  <td>{@code {x | a < x <= b}} <td>{@link Range#openClosed openClosed}
 * <tr><td>{@code [a..b)}  <td>{@code {x | a <= x < b}} <td>{@link Range#closedOpen closedOpen}
 * <tr><td>{@code (a..+∞)} <td>{@code {x | x > a}}      <td>{@link Range#greaterThan greaterThan}

 * <tr><td>{@code [a..b]}  <td>{@code {x | a <= x <= b}}<td>{@link Range#closed closed}
 * <tr><td>{@code (a..b]}  <td>{@code {x | a < x <= b}} <td>{@link Range#openClosed openClosed}
 * <tr><td>{@code [a..b)}  <td>{@code {x | a <= x < b}} <td>{@link Range#closedOpen closedOpen}
 * <tr><td>{@code (a..+∞)} <td>{@code {x | x > a}}      <td>{@link Range#greaterThan greaterThan}

 * rangeSet.add(Range.closedOpen(11, 15)); // disconnected range; {[1, 10], [11, 15)}
 * rangeSet.add(Range.closedOpen(15, 20)); // connected range; {[1, 10], [11, 20)}
 * rangeSet.add(Range.openClosed(0, 0)); // empty range; {[1, 10], [11, 20)}
 * rangeSet.remove(Range.open(5, 10)); // splits [1, 10]; {[1, 5], [10, 10], [11, 20)}
 * }</pre>
 *