mockConfig = Mockito.mock(Configuration.class);
        mockCredentials = Mockito.mock(Credentials.class);
        mockCredentialsInternal = Mockito.mock(CredentialsInternal.class);

        Mockito.when(mockContext.getConfig()).thenReturn(mockConfig);
        Mockito.when(mockContext.getCredentials()).thenReturn(mockCredentials);
        Mockito.when(mockCredentials.unwrap(Mockito.any())).thenReturn(mockCredentialsInternal);

    private byte[] testFileId;

    @BeforeEach
    void setUp() {
        mockConfig = mock(Configuration.class);
        mockContext = mock(CIFSContext.class);
        when(mockContext.getConfig()).thenReturn(mockConfig);
        when(mockConfig.getMaximumBufferSize()).thenReturn(65536);
        when(mockConfig.getListSize()).thenReturn(65536);

        testFileId = new byte[16];

        @Override
        protected URLConnection openConnection(URL u) {
            return null; // not used
        }
    };

    @BeforeEach
    void setup() {
        when(ctx.getConfig()).thenReturn(config);
        when(ctx.getCredentials()).thenReturn(creds);
        when(ctx.getNameServiceClient()).thenReturn(nsc);
    }

    private static URL smbUrl(String spec) {
        try {

        props.setProperty("jcifs.smb.client.channelHealthCheckInterval", "5");

        multiConfig = new PropertyConfiguration(props);

        // Mock context and session for ChannelManager
        when(mockContext.getConfig()).thenReturn(multiConfig);
        when(mockSession.getSessionKey()).thenReturn(new byte[16]);

        channelManager = new ChannelManager(mockContext, mockSession);
    }

    @Test

        // make sure that validation is performed in any case
        final Smb2SigningDigest dgst = getDigest();
        if (dgst != null && !isAsync() && (getConfig().isRequireSecureNegotiate() || getErrorCode() == NtStatus.NT_STATUS_SUCCESS)) {
            // MID checking not required here as we only read responses for which we're waiting

    @Override
    protected Smb2QueryDirectoryResponse createResponse(final CIFSContext tc,
            final ServerMessageBlock2Request<Smb2QueryDirectoryResponse> req) {
        return new Smb2QueryDirectoryResponse(tc.getConfig(), this.fileInformationClass);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()
     */
    @Override
    public int size() {

        this.fileId = fileId;
    }

    @Override
    protected Smb2WriteResponse createResponse(final CIFSContext tc, final ServerMessageBlock2Request<Smb2WriteResponse> req) {
        return new Smb2WriteResponse(tc.getConfig());
    }

    /**
     * Sets the data to be written to the file.
     *
     * @param data the data buffer to write
     * @param offset the offset in the data buffer

    @Override
    public WebConfigDbm asDBMeta() {
        return WebConfigDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "web_config";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;
    }

    @Override
    public ConditionQuery localCQ() {
        return doGetConditionQuery();

    private byte[] testFileId;
    private byte[] outputBuffer;
    private Smb2ReadRequest request;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        when(mockContext.getConfig()).thenReturn(mockConfig);

        testFileId = new byte[16];
        new SecureRandom().nextBytes(testFileId);
        outputBuffer = new byte[4096];

    void testConstructor() {
        // Given & When
        Smb2FlushResponse flushResponse = new Smb2FlushResponse(mockConfig);

        // Then
        assertNotNull(flushResponse);
        // Cannot test getConfig() as it's protected
    }

    @Nested
    @DisplayName("writeBytesWireFormat tests")
    class WriteBytesWireFormatTests {

        @Test
        @DisplayName("Should return 0 for write bytes")