final int ii = i;
      ImmutableRangeMap.Builder<Integer, Integer> builder = ImmutableRangeMap.builder();
      assertThrows(IllegalArgumentException.class, () -> builder.put(Range.closedOpen(ii, ii), 1));
      assertThrows(IllegalArgumentException.class, () -> builder.put(Range.openClosed(ii, ii), 1));
    }
  }

  public void testOverlapRejection() {
    for (Range<Integer> range1 : RANGES) {

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

    rangeMap.put(Range.closedOpen(7, 10), 2);
    rangeMap.put(Range.closedOpen(12, 15), 2);
    rangeMap.put(Range.closedOpen(18, 19), 3);

    rangeMap.putCoalescing(Range.closedOpen(-5, -4), 0); // disconnected
    rangeMap.putCoalescing(Range.closedOpen(-6, -5), 0); // lower than minimum

    rangeMap.putCoalescing(Range.closedOpen(2, 4), 1); // between

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

    testInvariants(rangeSet);
    assertThat(rangeSet.asRanges()).contains(Range.closedOpen(1, 6));
    assertThat(rangeSet.complement().asRanges())
        .containsExactly(Range.lessThan(1), Range.atLeast(6))
        .inOrder();
  }

  public void testFillHoleWithOverlap() {
    TreeRangeSet<Integer> rangeSet = TreeRangeSet.create();
    rangeSet.add(Range.closedOpen(1, 3));

    assertEquals(Range.closedOpen(1, 5), Range.closed(1, 4).canonical(integers()));
    assertEquals(Range.closedOpen(1, 5), Range.open(0, 5).canonical(integers()));
    assertEquals(Range.closedOpen(1, 5), Range.closedOpen(1, 5).canonical(integers()));
    assertEquals(Range.closedOpen(1, 5), Range.openClosed(0, 4).canonical(integers()));

    assertEquals(
        Range.closedOpen(Integer.MIN_VALUE, 0),

    ImmutableRangeSet<Integer> rangeSet = ImmutableRangeSet.of(Range.closedOpen(1, 5));

    assertThat(rangeSet.asRanges()).contains(Range.closedOpen(1, 5));

    assertTrue(rangeSet.intersects(Range.closed(3, 4)));
    assertTrue(rangeSet.intersects(Range.closedOpen(0, 2)));
    assertTrue(rangeSet.intersects(Range.closedOpen(3, 7)));
    assertTrue(rangeSet.intersects(Range.greaterThan(2)));

   * same values contained in {@code Range.closedOpen(lower, upper)}.)
   *
   * @throws IllegalArgumentException if {@code lower} is greater than {@code upper}
   * @since 23.0
   */
  public static ContiguousSet<Integer> closedOpen(int lower, int upper) {
    return create(Range.closedOpen(lower, upper), DiscreteDomain.integers());
  }

  /**

   * same values contained in {@code Range.closedOpen(lower, upper)}.)
   *
   * @throws IllegalArgumentException if {@code lower} is greater than {@code upper}
   * @since 23.0
   */
  public static ContiguousSet<Integer> closedOpen(int lower, int upper) {
    return create(Range.closedOpen(lower, upper), DiscreteDomain.integers());
  }

  /**

      final int ii = i;
      ImmutableRangeMap.Builder<Integer, Integer> builder = ImmutableRangeMap.builder();
      assertThrows(IllegalArgumentException.class, () -> builder.put(Range.closedOpen(ii, ii), 1));
      assertThrows(IllegalArgumentException.class, () -> builder.put(Range.openClosed(ii, ii), 1));
    }
  }

  public void testOverlapRejection() {
    for (Range<Integer> range1 : RANGES) {