}

  public void testGap_invalidRangesWithInfinity() {
    assertThrows(IllegalArgumentException.class, () -> Range.atLeast(1).gap(Range.atLeast(2)));

    assertThrows(IllegalArgumentException.class, () -> Range.atLeast(2).gap(Range.atLeast(1)));

    assertThrows(IllegalArgumentException.class, () -> Range.atMost(1).gap(Range.atMost(2)));

  }

  public void testGap_invalidRangesWithInfinity() {
    assertThrows(IllegalArgumentException.class, () -> Range.atLeast(1).gap(Range.atLeast(2)));

    assertThrows(IllegalArgumentException.class, () -> Range.atLeast(2).gap(Range.atLeast(1)));

    assertThrows(IllegalArgumentException.class, () -> Range.atMost(1).gap(Range.atMost(2)));

        // SMB1 versions should not be allowed
        assertTrue("SMB1 should be disabled", config.getMinimumVersion().atLeast(DialectVersion.SMB202));

        // Minimum version should be SMB2 or higher
        assertTrue("Minimum version should be SMB2 or higher", config.getMinimumVersion().atLeast(DialectVersion.SMB202));
    }

    /**
     * Test that encryption is properly configured
     */
    @Test

     * Check if this dialect version is at least the specified version
     *
     * @param v the version to compare against
     * @return whether this version is a least the given one
     */
    public boolean atLeast(final DialectVersion v) {
        return ordinal() >= v.ordinal();
    }

    /**
     * Check if this dialect version is at most the specified version
     *
     * @param v the version to compare against

            failover.handleFailure(failedChannel, error);
        }

        // Should eventually remove the channel
        verify(mockChannelManager, atLeast(1)).removeChannel(failedChannel);
        verify(mockChannelManager, atLeast(1)).establishReplacementChannel();
    }

    @Test
    void testShutdown() {
        failover.shutdown();

        // Should not throw any exceptions

            i++;
        }

        if (config.getMaximumVersion().atLeast(DialectVersion.SMB210)) {
            System.arraycopy(config.getMachineId(), 0, this.clientGuid, 0, this.clientGuid.length);
        }

        final List<NegotiateContextRequest> negoContexts = new LinkedList<>();
        if (config.getMaximumVersion() != null && config.getMaximumVersion().atLeast(DialectVersion.SMB311)) {
            final byte[] salt = new byte[32];

            jcifs.DialectVersion dialect = transport.getNegotiateResponse().getSelectedDialect();
            return transport.isSMB2() && dialect.atLeast(jcifs.DialectVersion.SMB300) && !dialect.atLeast(jcifs.DialectVersion.SMB311);
        } catch (final SmbException e) {
            log.debug("Failed to connect for determining SMB 3.0 support", e);
            return false;
        }
    }

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

  public void testMergesConnectedDisjoint() {
    TreeRangeSet<Integer> rangeSet = TreeRangeSet.create();
    rangeSet.add(Range.closed(1, 4));
    rangeSet.add(Range.open(4, 6));

    assertFalse(rangeSet.contains(0));

    RangeSet<Integer> expectedComplement = TreeRangeSet.create();
    expectedComplement.add(Range.lessThan(1));
    expectedComplement.add(Range.atLeast(5));

    assertEquals(expectedComplement, rangeSet.complement());
  }

  public void testSingleBoundedBelowRange() {
    ImmutableRangeSet<Integer> rangeSet = ImmutableRangeSet.of(Range.greaterThan(2));

            }
        }

        if (selected == null) {
            log.debug("Server returned an unknown dialect");
            return false;
        }

        if (!selected.atLeast(getConfig().getMinimumVersion()) || !selected.atMost(getConfig().getMaximumVersion())) {
            log.debug("Server selected an disallowed dialect version {} (min: {} max: {})", selected, getConfig().getMinimumVersion(),