### Question:
BoltProtocolUtil { public static void writeEmptyChunkHeader( ByteBuf buf ) { buf.writeShort( 0 ); } private  BoltProtocolUtil(); static ByteBuf handshakeBuf(); static String handshakeString(); static void writeMessageBoundary( ByteBuf buf ); static void writeEmptyChunkHeader( ByteBuf buf ); static void writeChunkHeader( ByteBuf buf, int chunkStartIndex, int headerValue ); static final int BOLT_MAGIC_PREAMBLE; static final BoltProtocolVersion NO_PROTOCOL_VERSION; static final int CHUNK_HEADER_SIZE_BYTES; static final int DEFAULT_MAX_OUTBOUND_CHUNK_SIZE_BYTES; }### Answer:
@Test void shouldWriteEmptyChunkHeader() { ByteBuf buf = Unpooled.buffer(); writeEmptyChunkHeader( buf ); buf.writeInt( 1 ); buf.writeInt( 2 ); buf.writeInt( 3 ); assertByteBufContains( buf, (byte) 0, (byte) 0, 1, 2, 3 ); }