### Question:
RedisCommand implements IRedisCommand { @Override public void encode(ByteBuf byteBuf) { byteBuf.writeByte((byte) RedisConstants.ASTERISK_BYTE); byteBuf.writeBytes(ProtoUtils.convertIntToByteArray(args.size())); writeCRLF(byteBuf); for (byte[] arg : args) { byteBuf.writeByte((byte) RedisConstants.DOLLAR_BYTE); byteBuf.writeBytes(ProtoUtils.convertIntToByteArray(arg.length)); writeCRLF(byteBuf); byteBuf.writeBytes(arg); writeCRLF(byteBuf); } }  @Override void encode(ByteBuf byteBuf); int getArgCount(); void setArgCount(int argCount); List<byte[]> getArgs(); void setArgs(List<byte[]> args); boolean isInline(); void setInline(boolean inline); RedisRequestPolicy getPolicy(); void setPolicy(RedisRequestPolicy policy); @Override String toString();  }### Answer:
@Test public void encode() { ByteBuf buf = Unpooled.buffer();; RedisCommand redisCommand = new RedisCommand(); redisCommand.setArgCount(3); List<byte[]> args = new ArrayList<>(); args.add("set".getBytes()); args.add("mykey".getBytes()); args.add("myvalue".getBytes()); redisCommand.setArgs(args); redisCommand.encode(buf); assertEquals('*',(char)buf.readByte()); assertEquals('3',(char)buf.readByte()); assertEquals(RedisConstants.CR_BYTE,(char)buf.readByte()); assertEquals(RedisConstants.LF_BYTE,(char)buf.readByte()); assertEquals('$',(char)buf.readByte()); assertEquals('3',(char)buf.readByte()); assertEquals(RedisConstants.CR_BYTE,(char)buf.readByte()); assertEquals(RedisConstants.LF_BYTE,(char)buf.readByte()); assertEquals("set",readStr(buf,"set".length())); assertEquals(RedisConstants.CR_BYTE,(char)buf.readByte()); assertEquals(RedisConstants.LF_BYTE,(char)buf.readByte()); assertEquals('$',(char)buf.readByte()); assertEquals('5',(char)buf.readByte()); assertEquals(RedisConstants.CR_BYTE,(char)buf.readByte()); assertEquals(RedisConstants.LF_BYTE,(char)buf.readByte()); assertEquals("mykey",readStr(buf,"mykey".length())); assertEquals(RedisConstants.CR_BYTE,(char)buf.readByte()); assertEquals(RedisConstants.LF_BYTE,(char)buf.readByte()); assertEquals('$',(char)buf.readByte()); assertEquals('7',(char)buf.readByte()); assertEquals(RedisConstants.CR_BYTE,(char)buf.readByte()); assertEquals(RedisConstants.LF_BYTE,(char)buf.readByte()); assertEquals("myvalue",readStr(buf,"myvalue".length())); assertEquals(RedisConstants.CR_BYTE,(char)buf.readByte()); assertEquals(RedisConstants.LF_BYTE,(char)buf.readByte()); buf.resetReaderIndex(); while (buf.isReadable()) { System.out.print((char)buf.readByte()); } }