}

    /**
     * Verify that writeParameterWordsWireFormat writes the file id and the
     * unsigned time correctly.  The last write time is zero which should be
     * encoded as four 0xFF bytes by {@code writeUTime}.
     */
    @ParameterizedTest(name = "fid={0}, lastWriteTime={1}")
    @MethodSource("validParams")
    @DisplayName("happy: writeParameterWordsWireFormat writes correct bytes")

        assertTrue(result.contains("0102030405060708090A0B0C0D0E0F10"));
    }

    @Test
    @DisplayName("Test writeUTime with zero time")
    void testWriteUTimeWithZeroTime() {
        byte[] dst = new byte[4];

        SMB1SigningDigest.writeUTime(mockConfig, 0L, dst, 0);

        assertEquals((byte) 0xFF, dst[0]);
        assertEquals((byte) 0xFF, dst[1]);

        command = SMB_COM_CLOSE;
    }

    @Override
    int writeParameterWordsWireFormat(final byte[] dst, int dstIndex) {
        writeInt2(fid, dst, dstIndex);
        dstIndex += 2;
        writeUTime(lastWriteTime, dst, dstIndex);
        return 6;
    }

    @Override
    int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override

        buffer[1] = 0x00;
        // Last Write Time (UTime): A sample timestamp in milliseconds
        long sampleTimeMillis = 1672531200000L; // Represents a specific date in milliseconds
        ServerMessageBlock.writeUTime(sampleTimeMillis, buffer, 2);
        // File Size: 1024 bytes
        ServerMessageBlock.writeInt4(1024, buffer, 6);

        response.wordCount = 10; // Must be non-zero to read

        assertEquals(6, bytesWritten);
        assertEquals(fid, SMBUtil.readInt2(dst, 0));
        // With a digest, the lastWriteTime should be written.
        // We can't verify the exact bytes without a real implementation of writeUTime,
        // but we can check that it's not zero.
        long writtenTime = SMBUtil.readInt4(dst, 2) & 0xFFFFFFFFL;
        // This is a weak check, but better than nothing.

     * @param t the time value in milliseconds since January 1, 1970 UTC
     * @param dst the destination byte array
     * @param dstIndex the starting index in the destination array
     */
    public static void writeUTime(final long t, final byte[] dst, final int dstIndex) {
        writeInt4(t / 1000, dst, dstIndex);
    }

    /**
     * SMB1 protocol header template with magic number 0xFF 'SMB'
     */

        return readInt4(buffer, bufferIndex) * 1000L;
    }

    static void writeUTime(long t, final byte[] dst, final int dstIndex) {
        if (t == 0L || t == 0xFFFFFFFFFFFFFFFFL) {
            writeInt4(0xFFFFFFFF, dst, dstIndex);
            return;
        }
        synchronized (TZ) {
            if (TZ.inDaylightTime(new Date())) {
                // in DST

     * @param dst
     *            The destination byte array
     * @param dstIndex
     *            The starting index in the destination array
     */
    public static void writeUTime(final Configuration cfg, long t, final byte[] dst, final int dstIndex) {
        if (t == 0L || t == 0xFFFFFFFFFFFFFFFFL) {
            SMBUtil.writeInt4(0xFFFFFFFF, dst, dstIndex);
            return;
        }

        long lastWriteTime = System.currentTimeMillis();
        int fileSize = 12345678;

        SMBUtil.writeInt2(fileAttributes, buffer, bufferIndex);
        SMBUtil.writeUTime(lastWriteTime, buffer, bufferIndex + 2);
        SMBUtil.writeInt4(fileSize, buffer, bufferIndex + 6);

        // Read the data
        int bytesRead = response.readParameterWordsWireFormat(buffer, bufferIndex);

    @Test
    void testWriteUTime() {
        byte[] dst = new byte[8];

        // Test with zero
        SMBUtil.writeUTime(0L, dst, 0);
        assertEquals(0, SMBUtil.readInt4(dst, 0));

        // Test with specific value (Unix timestamp in milliseconds)
        SMBUtil.writeUTime(1500000000000L, dst, 4);
        assertEquals(1500000000, SMBUtil.readInt4(dst, 4));
    }

    @Test
    void testSMBHeader() {