initializeMultiChannel();

                // Initialize witness support for fast failover
                initializeWitnessSupport();

                if (ex != null) {
                    throw ex;
                }
                return (T) (response != null ? response.getNextResponse() : null);
            }
        }
    }

        doThrow(new CIFSException("Close failed")).when(delegate).close();

        TestIterator iterator = new TestIterator(null);

        CIFSException ex = assertThrows(CIFSException.class, iterator::close);
        assertEquals("Close failed", ex.getMessage());
    }

    @Test
    @DisplayName("Remove delegates to underlying iterator")
    void removeDelegation() {

    ListeningScheduledExecutorService service = listeningDecorator(delegate);
    RuntimeException ex = new RuntimeException();
    ListenableFuture<?> future = service.schedule(new ThrowingRunnable(0, ex), 1, MILLISECONDS);
    assertExecutionException(future, ex);
    assertEquals(0, delegate.getQueue().size());
  }

  public void testListeningDecorator_schedulePeriodic() throws Exception {

    }

    @Override
    public Object clone() {
        try {
            return new HMACT64(this);
        } catch (final CloneNotSupportedException ex) {
            throw new IllegalStateException(ex.getMessage());
        }
    }

    @Override
    protected byte[] engineDigest() {
        final byte[] digest = this.md5.digest();
        this.md5.update(this.opad);

    f.set("foo");
  }

  public void testExecutorSuccess() {
    CountingSameThreadExecutor ex = new CountingSameThreadExecutor();
    SettableFuture<String> f = SettableFuture.create();
    MockCallback callback = new MockCallback("foo");
    Futures.addCallback(f, callback, ex);
    f.set("foo");
    assertEquals(1, ex.runCount);
  }

  // Error cases
  public void testSameThreadExecutionException() {

    @Test
    @DisplayName("release below zero throws RuntimeCIFSException")
    void release_belowZero_throws() {
        SmbTreeConnection c = newConn();
        RuntimeCIFSException ex = assertThrows(RuntimeCIFSException.class, c::release);
        assertTrue(ex.getMessage().toLowerCase().contains("usage count"));
    }

    @Test
    @DisplayName("isConnected reflects underlying tree state")
    void isConnected_usesTree() {

            } catch (final Exception ex) {
                final String msg = ex.getMessage();
                final boolean timeout = msg != null && msg.equals("Read timed out");
                /* If just a timeout, try to disconnect gracefully
                 */
                final boolean hard = !timeout;

                if (!timeout && LogStream.level >= 3) {
                    ex.printStackTrace(log);
                }

                            throw new SmbAuthException(NtStatus.NT_STATUS_LOGON_FAILURE);
                        }

                        if (ex != null) {
                            throw ex;
                        }

                        uid = response.uid;

                        if (request.digest != null) {

        when(handle.isValid()).thenReturn(false);
        SmbWatchHandleImpl sut = new SmbWatchHandleImpl(handle, 0, false);

        SmbException ex = assertThrows(SmbException.class, sut::watch, "Expected SmbException when handle invalid");
        assertTrue(ex.getMessage().contains("Watch was broken by tree disconnect"));
    }

    // Happy path for SMB2: a response is received and the list is returned; tree is closed
    @Test

                writeSecurityBuffer(type1, 24, 32 + domain.length, workstation);
            }
            return type1;
        } catch (final IOException ex) {
            throw new IllegalStateException(ex.getMessage());
        }
    }

    @Override
    public String toString() {
        final String suppliedDomain = getSuppliedDomain();