Protobuf-net Serialization

SerializationTest.cs

using System;
using System.IO;
using FluentAssertions;
using NUnit.Framework;
using ProtoBuf;

namespace ProtoBuffs
{
    [ProtoContract]
    public class AccessTokenV1
    {
        [ProtoMember(1)]
        public string AccessToken { get; set; }
    }

    [ProtoContract]
    public class AccessTokenV2
    {
        [ProtoMember(1)]
        public string AccessToken { get; set; }

        [ProtoMember(2)]
        public string RefreshToken { get; set; }
    }

    [TestFixture]
    public class SerializationTests
    {
        [Test]
        public void CanDeserializeIntoSomethingDifferent()
        {
            using (var stream = new MemoryStream())
            {
                var token1 = new AccessTokenV1 { AccessToken = Guid.NewGuid().ToString() };
                Serializer.Serialize(stream, token1);

                stream.Position = 0;
                var token2 = Serializer.Deserialize<AccessTokenV2>(stream);

                token2.AccessToken.Should().Be(token1.AccessToken);
                token2.RefreshToken.Should().BeNullOrEmpty();
            }
        }
    }
}