private Smb2CloseRequest request;

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

        // Create a test file ID (16 bytes)
        testFileId = new byte[16];
        for (int i = 0; i < 16; i++) {
            testFileId[i] = (byte) (i + 1);
        }

    void availableReturnsUnderlyingWhenNoMessage() throws IOException {
        // Mock input stream that reports available bytes
        InputStream mockIn = mock(InputStream.class);
        when(mockIn.available()).thenReturn(42);

        SocketInputStream sis = new SocketInputStream(mockIn);

        // When no message is buffered, should return underlying stream's available
        assertEquals(42, sis.available());
    }

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        // Mock the OEM encoding for non-Unicode tests
        when(mockConfig.getOemEncoding()).thenReturn("Cp850");
        fileBothDirectoryInfo = new FileBothDirectoryInfo(mockConfig, true);
        fileBothDirectoryInfoNonUnicode = new FileBothDirectoryInfo(mockConfig, false);
    }

    @Test

    private byte[] testFileId;
    private Smb2WriteRequest request;

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

        testFileId = new byte[16];
        new SecureRandom().nextBytes(testFileId);
        request = new Smb2WriteRequest(mockConfig, testFileId);
    }

    @Nested

    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];
        request = new Smb2ReadRequest(mockConfig, testFileId, outputBuffer, 0);

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

        // Mock CredentialsInternal for session tests
        jcifs.smb.CredentialsInternal mockCredentialsInternal = Mockito.mock(jcifs.smb.CredentialsInternal.class);
        Mockito.when(mockCredentials.unwrap(jcifs.smb.CredentialsInternal.class)).thenReturn(mockCredentialsInternal);