}

    @Test
    void testSingleChannelSelection() {
        when(mockChannelManager.getHealthyChannels()).thenReturn(Collections.singletonList(channel1));

        ChannelInfo selected = loadBalancer.selectChannel(mockMessage);
        assertEquals(channel1, selected);
    }

    @Test
    void testNoChannelsAvailable() {
        when(mockChannelManager.getHealthyChannels()).thenReturn(Collections.emptyList());

    @BeforeEach
    void setUp() {
        exception = null;
    }

    @Test
    @DisplayName("Should create exception with error code and message")
    void testBasicCreation() {
        // When
        exception = new SmbOperationException(SmbOperationException.ErrorCode.FILE_NOT_FOUND, "test.txt");

        // Then
        assertNotNull(exception);

    void testEmptyProperties() throws CIFSException {
        // Given
        Properties emptyProps = new Properties();

        // When
        PropertyConfiguration emptyConfig = new PropertyConfiguration(emptyProps);

        // Then
        assertNotNull(emptyConfig);
        // Hostname may be null when not provided in properties
        // This is expected behavior
    }

    @Test

        // Test case for isCancel method when it returns true
        when(mockRequest.isCancel()).thenReturn(true);

        assertTrue(mockRequest.isCancel(), "isCancel should return true when mocked to do so.");
        verify(mockRequest, times(1)).isCancel();
    }

    @Test
    void testIsCancelFalse() {
        // Test case for isCancel method when it returns false
        when(mockRequest.isCancel()).thenReturn(false);

        .build()
    }

    companion object {
      /** Synthetic response header: the local time when the request was sent. */
      private val SENT_MILLIS = "${Platform.get().getPrefix()}-Sent-Millis"

      /** Synthetic response header: the local time when the response was received. */
      private val RECEIVED_MILLIS = "${Platform.get().getPrefix()}-Received-Millis"
    }
  }

        // When
        String result = Hexdump.toHexString(data);

        // Then
        assertNotNull(result);
        assertEquals("000FFF7F80", result);
    }

    @Test
    @DisplayName("Should handle empty byte array")
    void testToHexStringEmpty() {
        // Given
        byte[] data = {};

        // When
        String result = Hexdump.toHexString(data);

        when(mockFile1.lastAccess()).thenReturn(System.currentTimeMillis() - 1800000);

        when(mockFile2.getName()).thenReturn("subfolder");
        when(mockFile2.length()).thenReturn(0L);
        when(mockFile2.lastModified()).thenReturn(System.currentTimeMillis() - 1800000);
        when(mockFile2.isDirectory()).thenReturn(true);
        when(mockFile2.getAttributes()).thenReturn(0x10); // FILE_ATTRIBUTE_DIRECTORY

            // Arrange
            when(mockCtx.getSigningKey()).thenReturn(new byte[] { 7 });
            when(mockCtx.isEstablished()).thenReturn(true);
            when(mockCtx.initSecContext(any(byte[].class), anyInt(), anyInt())).thenReturn(new byte[] { 9 });
            when(mockCtx.getNetbiosName()).thenReturn("NB");
            when(mockCtx.isSupported(any())).thenReturn(true);
            when(mockCtx.isPreferredMech(any())).thenReturn(false);

    @Test
    @DisplayName("Should create SmbException with NT status code")
    void testSmbExceptionWithNTStatus() {
        // Given
        int ntStatus = NtStatus.NT_STATUS_ACCESS_DENIED;

        // When
        SmbException exception = new SmbException(ntStatus, false);

        // Then
        assertNotNull(exception);
        assertEquals(ntStatus, exception.getNtStatus());

    void testRenewCredentials_NtlmAuthenticatorReturnsNull() {
        try (MockedStatic<NtlmAuthenticator> mockedNtlmAuthenticator = mockStatic(NtlmAuthenticator.class)) {
            mockedNtlmAuthenticator.when(NtlmAuthenticator::getDefault).thenReturn(mockNtlmAuthenticator);
            mockedNtlmAuthenticator.when(