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() {

        void testEmptyBufferEncoding() {
            byte[] buffer = new byte[256];
            testMessage.setBytesWritten(0);
            int len = testMessage.encode(buffer, 0);
            assertTrue(len >= Smb2Constants.SMB2_HEADER_LENGTH);
        }

        @Test
        @DisplayName("Should handle large MID values")
        void testLargeMidValue() {
            long largeMid = Long.MAX_VALUE;