// OID length claims more than available
                Arguments.of("oid length exceeds buffer", new byte[] { 0x04, 0x01, 0x00, 0x10, 0x06 }, IllegalArgumentException.class),

                // Missing NAME_LEN (not enough bytes for 4-byte length)
                Arguments.of("missing NAME_LEN bytes", new byte[] { 0x04, 0x01, 0x00, (byte) der.length, der[0] },

        when(mockFile2.length()).thenReturn(0L);
        when(mockFile2.lastModified()).thenReturn(2000L);
        when(mockFile2.isDirectory()).thenReturn(true);
        when(mockFile2.getAttributes()).thenReturn(0x10);
        when(mockFile2.createTime()).thenReturn(600L);
        when(mockFile2.lastAccess()).thenReturn(900L);

        // Update cache
        List<SmbFile> files = Arrays.asList(mockFile1, mockFile2);

    /**
     * SMB command to check if a directory exists.
     */
    public static final byte SMB_COM_CHECK_DIRECTORY = (byte) 0x10;

    /**
     * SMB command to seek within a file.
     */
    public static final byte SMB_COM_SEEK = (byte) 0x12;

    /**
     * SMB command for file locking operations.
     */
    public static final byte SMB_COM_LOCKING_ANDX = (byte) 0x24;

    /**

    }

    @Test
    @DisplayName("Test constructor initialization with command and subcommand")
    void testConstructorWithCommandAndSubcommand() {
        byte command = (byte) 0x25;
        byte subcommand = (byte) 0x01;
        TestSmbComTransactionResponse resp = new TestSmbComTransactionResponse(mockConfig, command, subcommand);
        assertNotNull(resp);

        // Test common file attribute combinations
        int[] attributeFlags = { 0x01, // FILE_ATTRIBUTE_READONLY
                0x02, // FILE_ATTRIBUTE_HIDDEN
                0x04, // FILE_ATTRIBUTE_SYSTEM
                0x10, // FILE_ATTRIBUTE_DIRECTORY
                0x20, // FILE_ATTRIBUTE_ARCHIVE
                0x80, // FILE_ATTRIBUTE_NORMAL
                0x100, // FILE_ATTRIBUTE_TEMPORARY

        assertEquals(0x02, Smb2QueryDirectoryRequest.SMB2_RETURN_SINGLE_ENTRY);
        assertEquals(0x04, Smb2QueryDirectoryRequest.SMB2_INDEX_SPECIFIED);
        assertEquals(0x10, Smb2QueryDirectoryRequest.SMB2_REOPEN);
    }

    @Test
    @DisplayName("Test with Unicode filename")
    void testUnicodeFileName() {
        request = new Smb2QueryDirectoryRequest(mockConfig);

    private CommonServerMessageBlock message;

    private byte[] testData;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        testData = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
    }

    @Test
    @DisplayName("Test sign method with valid parameters")
    void testSignWithValidParameters() {
        // Arrange
        int offset = 0;

        // Arrange: minimal valid fields + APPLICATION tag 3
        ASN1EncodableVector v = new ASN1EncodableVector();
        byte ap = (byte) 0x12;
        v.add(new DERTaggedObject(true, 0, new ASN1Integer(Integer.parseInt(KerberosConstants.KERBEROS_VERSION))));
        v.add(new DERTaggedObject(true, 1, new ASN1Integer(Integer.parseInt(KerberosConstants.KERBEROS_AP_REQ))));

        return Stream.of(Arguments.of(new byte[] {}, ""), Arguments.of(new byte[] { (byte) 0x00 }, "00"),
                Arguments.of(new byte[] { (byte) 0x0F }, "0f"), Arguments.of(new byte[] { (byte) 0x10 }, "10"),
                Arguments.of(new byte[] { (byte) 0xAB }, "ab"),
                Arguments.of(new byte[] { (byte) 0x7F, (byte) 0x80, (byte) 0xFF }, "7f80ff"));
    }

	// map header, size 3
	// string "Free"
	o = append(o, 0x83, 0xa4, 0x46, 0x72, 0x65, 0x65)
	o = msgp.AppendInt64(o, z.Free)
	// string "Total"
	o = append(o, 0xa5, 0x54, 0x6f, 0x74, 0x61, 0x6c)
	o = msgp.AppendInt64(o, z.Total)
	// string "Used"
	o = append(o, 0xa4, 0x55, 0x73, 0x65, 0x64)
	o = msgp.AppendInt64(o, z.Used)
	return
}

// UnmarshalMsg implements msgp.Unmarshaler