void testUnspecifiedFileId() {
            assertNotNull(Smb2Constants.UNSPECIFIED_FILEID, "Unspecified FileId should not be null");
            assertEquals(16, Smb2Constants.UNSPECIFIED_FILEID.length, "Unspecified FileId must be exactly 16 bytes");

            // Verify all bytes are 0xFF
            for (int i = 0; i < Smb2Constants.UNSPECIFIED_FILEID.length; i++) {

    }

    @Test
    @DisplayName("Constructor with fileName only should use UNSPECIFIED_FILEID")
    void testConstructorWithFileNameOnly() throws Exception {
        Smb2CloseRequest requestWithFileNameOnly = new Smb2CloseRequest(mockConfig, testFileName);

        // Verify file ID is UNSPECIFIED_FILEID
        Field fileIdField = Smb2CloseRequest.class.getDeclaredField("fileId");

    void testWithUnspecifiedFileId() {
        setupMockConfig();
        Smb2IoctlRequest request = new Smb2IoctlRequest(mockConfig, TEST_CONTROL_CODE);

        assertNotNull(request);
        // Should use UNSPECIFIED_FILEID by default
    }

    @Test
    @DisplayName("Test various FSCTL constants")
    void testFsctlConstants() {
        // Test that all FSCTL constants are properly defined

        // SMB2_QUERY_INFO command value is 0x0010
        assertEquals((short) 0x0010, request.getCommand());

        // Verify that default file ID is set
        byte[] expectedFileId = Smb2Constants.UNSPECIFIED_FILEID;
        Field fileIdField;
        try {
            fileIdField = Smb2QueryInfoRequest.class.getDeclaredField("fileId");
            fileIdField.setAccessible(true);

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

        emptyFileId = new byte[16];
        Arrays.fill(emptyFileId, (byte) 0);

        unspecifiedFileId = Smb2Constants.UNSPECIFIED_FILEID;

        testOutputBuffer = new byte[1024];
    }

    @Test
    @DisplayName("Should implement RequestWithFileId interface correctly")
    void testInterfaceImplementation() {

        // SMB2_SET_INFO command value is 0x0011
        assertEquals((short) 0x0011, request.getCommand());

        // Verify that default file ID is set
        byte[] expectedFileId = Smb2Constants.UNSPECIFIED_FILEID;
        Field fileIdField;
        try {
            fileIdField = Smb2SetInfoRequest.class.getDeclaredField("fileId");
            fileIdField.setAccessible(true);

        }

        @Test
        @DisplayName("Should handle unspecified file ID")
        void testUnspecifiedFileId() {
            assertDoesNotThrow(() -> request.setFileId(Smb2Constants.UNSPECIFIED_FILEID));
        }
    }

    @Nested
    @DisplayName("Data Setting Tests")
    class DataSettingTests {

        @Test
        @DisplayName("Should set data with offset and length")