private final long lastModified;
        private final long lastAccess;
        private final long length;
        private final int fileIndex;

        TestFileEntry(String name, int type, int attributes, long createTime, long lastModified, long lastAccess, long length,
                int fileIndex) {
            this.name = name;
            this.type = type;
            this.attributes = attributes;

        // Set maximum values
        SMBUtil.writeInt4(Integer.MAX_VALUE, buffer, 0); // nextEntryOffset
        SMBUtil.writeInt4(Integer.MAX_VALUE, buffer, 4); // fileIndex
        // For time values, use a reasonable max time that won't overflow
        long maxTime = System.currentTimeMillis() + 1000000000000L;
        SMBUtil.writeTime(maxTime, buffer, 8); // creationTime

        request = new Smb2QueryDirectoryRequest(mockConfig);
        int fileIndex = 0x12345678;

        request.setFileIndex(fileIndex);

        // Verify by writing to buffer and checking the fileIndex position
        byte[] buffer = new byte[1024];
        request.writeBytesWireFormat(buffer, Smb2Constants.SMB2_HEADER_LENGTH);

        // FileIndex is at offset 4 in the request structure

        }

        @Test
        @DisplayName("fileIndex should return valid index")
        void testFileIndex() throws CIFSException {
            // Given
            long expectedIndex = 12345L;
            when(mockResource.fileIndex()).thenReturn(expectedIndex);

            // When
            long index = mockResource.fileIndex();

            // Then

        // Write minimal FileBothDirectoryInfo at dataOffset
        // NextEntryOffset (0 = last entry)
        SMBUtil.writeInt4(0, buffer, dataOffset);
        // FileIndex
        SMBUtil.writeInt4(0, buffer, dataOffset + 4);
        // CreationTime
        SMBUtil.writeInt8(0, buffer, dataOffset + 8);
        // LastAccessTime
        SMBUtil.writeInt8(0, buffer, dataOffset + 16);

    /**
     * Get the file index
     *
     * @return server side file index, 0 if unavailable
     * @throws CIFSException if an error occurs accessing the resource
     */
    long fileIndex() throws CIFSException;

    /**
     * Return the attributes of this file. Attributes are represented as a
     * bitset that must be masked with <code>ATTR_*</code> constants to determine