}

  public void testMap_readWrite() throws IOException {
    // Test data
    int size = 1024;
    byte[] expectedBytes = new byte[size];
    byte[] bytes = newPreFilledByteArray(1024);

    // Setup
    File file = createTempFile();
    Files.write(bytes, file);

    Random random = new Random();
    random.nextBytes(expectedBytes);

    // Test

        dstIndex += 2;
        dst[dstIndex] = (byte) 0x00;
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        dst[dstIndex++] = (byte) 0x00;
        dst[dstIndex++] = (byte) 0x00;
        writeInt4(capabilities, dst, dstIndex);
        dstIndex += 4;

        return dstIndex - start;
    }

    @Override
    int writeBytesWireFormat(final byte[] dst, int dstIndex) {

    }

    // Helper methods to write data to byte arrays for testing read methods
    private void writeInt2(int val, byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) val;
        dst[dstIndex + 1] = (byte) (val >> 8);
    }

    private void writeInt4(int val, byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) val;
        dst[dstIndex + 1] = (byte) (val >> 8);
        dst[dstIndex + 2] = (byte) (val >> 16);

    private final InputStream in;
    private SessionServicePacket ssp;
    private int bip, n;
    private final byte[] header, tmp;

    SocketInputStream(final InputStream in) {
        this.in = in;
        header = new byte[4];
        tmp = new byte[TMP_BUFFER_SIZE];
    }

    @Override
    public synchronized int read() throws IOException {
        if (read(tmp, 0, 1) < 0) {

        sdd.useUnicode = false;
        // format byte + path + null terminator
        byte[] expected = new byte[1 + dirName.length() + 1];
        expected[0] = 0x04; // buffer format
        System.arraycopy(dirName.getBytes(), 0, expected, 1, dirName.length());
        expected[dirName.length() + 1] = 0x00; // null terminator

        byte[] dst = new byte[100];
        int len = sdd.writeBytesWireFormat(dst, 0);

        return fileSize;
    }

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

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

    @Override
    int readParameterWordsWireFormat(final byte[] buffer, int bufferIndex) {
        if (wordCount == 0) {
            return 0;
        }

            cache.getBuffer();
            cache.releaseBuffer(new byte[1024]);
        }, "All BufferCache interface methods should be callable");
    }

    @Test
    @DisplayName("getBuffer should return non-null byte array")
    void testGetBufferContract() {
        // Given
        byte[] expectedBuffer = new byte[1024];
        when(mockBufferCache.getBuffer()).thenReturn(expectedBuffer);

        // When

        // Context header: 16 bytes
        // Name: 4 bytes ("DLse")
        // Padding: 4 bytes (to align data to 8-byte boundary)
        // Standard lease data: 32 bytes
        // Directory-specific data: 20 bytes (CacheScope(4) + MaxCacheAge(8) + Flags(4) + NotificationFilter(4))
        return 16 + 4 + 4 + 32 + 20;
    }

    @Override
    public int encode(byte[] buffer, int offset) {

   *   <li>The space character " " is converted into a plus sign "+".
   *   <li>All other characters are converted into one or more bytes using UTF-8 encoding and each
   *       byte is then represented by the 3-character string "%XY", where "XY" is the two-digit,
   *       uppercase, hexadecimal representation of the byte value.
   * </ul>
   *
   * <p>This escaper is suitable for escaping parameter names and values even when <a

        }
    }

    /**
     * Writes the specified byte array to the file at the given pathname.
     *
     * @param pathname
     *            The path to the file.
     * @param bytes
     *            The byte array to write.
     */
    public static void writeBytes(final String pathname, final byte[] bytes) {
        try (FileOutputStream fos = OutputStreamUtil.create(new File(pathname))) {