Kafka.Client.Requests.OffsetRequest.WriteTo C# (CSharp) Method

        public void WriteTo(KafkaBinaryWriter writer)
        {
            Guard.NotNull(writer, "writer");

            writer.WriteTopic(this.Topic, DefaultEncoding);
            writer.Write(this.Partition);
            writer.Write(this.Time);
            writer.Write(this.MaxOffsets);
        }

        public void GetBytesValid()
        {
            string topicName = "topic";
            OffsetRequest request = new OffsetRequest(topicName, 0, OffsetRequest.LatestTime, 10);

            // format = len(request) + requesttype + len(topic) + topic + partition + time + max
            // total byte count = 4 + (2 + 2 + 5 + 4 + 8 + 4)
            MemoryStream ms = new MemoryStream();
            request.WriteTo(ms);
            byte[] bytes = ms.ToArray();
            Assert.IsNotNull(bytes);
            Assert.AreEqual(29, bytes.Length);

            // first 4 bytes = the length of the request
            Assert.AreEqual(25, BitConverter.ToInt32(BitWorks.ReverseBytes(bytes.Take(4).ToArray<byte>()), 0));

            // next 2 bytes = the RequestType which in this case should be Produce
            Assert.AreEqual((short)RequestTypes.Offsets, BitConverter.ToInt16(BitWorks.ReverseBytes(bytes.Skip(4).Take(2).ToArray<byte>()), 0));

            // next 2 bytes = the length of the topic
            Assert.AreEqual((short)5, BitConverter.ToInt16(BitWorks.ReverseBytes(bytes.Skip(6).Take(2).ToArray<byte>()), 0));

            // next 5 bytes = the topic
            Assert.AreEqual(topicName, Encoding.ASCII.GetString(bytes.Skip(8).Take(5).ToArray<byte>()));

            // next 4 bytes = the partition
            Assert.AreEqual(0, BitConverter.ToInt32(BitWorks.ReverseBytes(bytes.Skip(13).Take(4).ToArray<byte>()), 0));

            // next 8 bytes = time
            Assert.AreEqual(OffsetRequest.LatestTime, BitConverter.ToInt64(BitWorks.ReverseBytes(bytes.Skip(17).Take(8).ToArray<byte>()), 0));

            // next 4 bytes = max offsets
            Assert.AreEqual(10, BitConverter.ToInt32(BitWorks.ReverseBytes(bytes.Skip(25).Take(4).ToArray<byte>()), 0));
        }