@Override
    public int decode(final byte[] buffer, int bufferIndex, final int len) throws SMBProtocolDecodingException {
        final int start = bufferIndex;
        this.namedPipeState = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        this.readDataAvailable = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        this.numberOfMessages = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

     * Test for the readSetupWireFormat method.
     * It should always return 0.
     */
    @Test
    void testReadSetupWireFormat() {
        byte[] buffer = new byte[10];
        // The method should not read anything and return 0
        assertEquals(0, response.readSetupWireFormat(buffer, 0, 10), "readSetupWireFormat should return 0.");
    }

    /**
     * Test for the readParametersWireFormat method.
     * It should always return 0.

            // Given
            byte[] buffer = new byte[10];
            int bufferIndex = 2;
            SMBUtil.writeInt2(4, buffer, bufferIndex); // Write structure size = 4
            SMBUtil.writeInt2(0, buffer, bufferIndex + 2); // Reserved field

            // When
            int bytesRead = response.readBytesWireFormat(buffer, bufferIndex);

            // Then

    ByteBuffer buffer;

    ByteBufferHasher(int expectedInputSize) {
      this.buffer = ByteBuffer.allocate(expectedInputSize).order(ByteOrder.LITTLE_ENDIAN);
    }

    /**
     * Resizes the buffer if necessary. Guaranteed to leave `buffer` in Write Mode ready for new
     * data.
     */
    private void ensureCapacity(int needed) {
      if (buffer.remaining() >= needed) {
        return;
      }

        try {
            return channel.read(buffer);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Reads the contents of the file channel into a byte buffer.
     *
     * @param channel
     *            The file channel. Must not be {@literal null}.
     * @param buffer

        // Should read nothing (returns 0)
        assertEquals(0, read);
    }

    @Test
    void testReadDataWireFormat() {
        trans2QueryPathInfo = new Trans2QueryPathInformation(config, TEST_FILENAME, TEST_INFO_LEVEL);

        byte[] buffer = new byte[256];
        int read = trans2QueryPathInfo.readDataWireFormat(buffer, 0, buffer.length);

        final int zt = zterm ? 1 : 0;

        length = maximum_length = (short) ((len + zt) * 2);
        buffer = new short[len + zt];

        int i;
        for (i = 0; i < len; i++) {
            buffer[i] = (short) str.charAt(i);
        }
        if (zterm) {
            buffer[i] = (short) 0;
        }
    }

    @Override
    public String toString() {

        byte[] buffer = new byte[256];
        // Fill with non-zero values first
        for (int i = 0; i < buffer.length; i++) {
            buffer[i] = (byte) 0xFF;
        }

        // When
        request.writeBytesWireFormat(buffer, 10);

        // Then - verify reserved field is zero
        assertEquals(0, SMBUtil.readInt2(buffer, 12));
    }

    @Test

        byte[] buffer = new byte[4096];

        // When
        req.encode(buffer, 0);

        // Then
        byte[] pathBytes = longPath.getBytes(StandardCharsets.UTF_16LE);
        assertEquals(pathBytes.length, SMBUtil.readInt2(buffer, Smb2Constants.SMB2_HEADER_LENGTH + 6));
    }

    @Test
    @DisplayName("Should throw exception when buffer too small for path")

        request.setCloseFlags(testFlags);

        byte[] buffer = new byte[256];
        int written = request.writeBytesWireFormat(buffer, 0);

        assertEquals(24, written);
        assertEquals(24, SMBUtil.readInt2(buffer, 0));
        assertEquals(testFlags, SMBUtil.readInt2(buffer, 2));
    }

    @Test