RavenDB Failing test serialisation

gistfile1.txt

using System;
using System.Collections.Generic;
using NUnit.Framework;
using Raven.Abstractions.Cluster;
using Raven.Abstractions.Replication;
using Raven.Client;
using Raven.Client.Document;
using Raven.Client.UniqueConstraints;
using Raven.Tests.Helpers;

namespace Marketplace.Tests.Unit.RavenDb
{
    [TestFixture]
    public class FailingRavenTests : RavenTestBase
    {
        [Test]
        public void LoadAndSaveUser()
        {
            using (var store = GetStore())
            {
                using (var session = store.OpenSession("Test"))
                {
                    var user = session.Load<TestUser>("users/1");
                    user.FirstName = "bob";

                    session.SaveChanges();
                }
            }
        }

        private IDocumentStore GetStore()
        {
            var store = new DocumentStore
            {
                Url = "",
                ResourceManagerId = Guid.NewGuid(),
                EnlistInDistributedTransactions = false,
                Conventions =
                {
                    IndexAndTransformerReplicationMode = IndexAndTransformerReplicationMode.None,
                    FailoverBehavior = FailoverBehavior.FailImmediately,
                    ClusterBehavior = ClusterBehavior.None
                }
            };

            store.Initialize();
            return store;
        }
    }
    
    
    public class TestUser
    {
        public string Id { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        [UniqueConstraint(CaseInsensitive = true)]
        public string Email { get; set; }
        public string ExternalId { get; set; }
        public string Password { get; set; }
        public Guid? PasswordToken { get; set; }
        public UserType UserType { get; set; }
        public string MerchantId { get; set; }
        public DateTimeOffset CreatedAt { get; set; }
        public DateTimeOffset? LastLogin { get; set; }
        public string CreatedByUserId { get; set; }
        public string Source { get; set; }
        public string Country2LetterISOCode { get; set; }
        public string Timezone { get; set; }
        public string Language { get; set; }
        public string Gender { get; set; }
        public string Avatar { get; set; }
        public string SsoToken { get; set; }
        public ApiToken ApiToken { get; set; }
        public TelephoneNumber ContactNumber { get; set; }
        public UserPreferences Preferences { get; set; }
        public DateTime? DateOfBirth { get; set; }
        public List<ThirdPartyConnection> ThirdPartyConnections { get; set; }
        public List<string> Merchants { get; set; }
        public List<string> Roles { get; set; }
        public List<string> Countries { get; set; }

        public TestUser()
        {
            CreatedAt = DateTimeOffset.Now;
            ThirdPartyConnections = new List<ThirdPartyConnection>();
            Preferences = new UserPreferences();
            Merchants = new List<string>();
            Roles = new List<string>();
            Countries = new List<string>();
        }
    }

    public class UserPreferences
    {
        public int? DefaultShippingAddressId { get; set; }
        public int? DefaultBillingAddressId { get; set; }
        public string DefaultPaymentMethodId { get; set; }
    }

    public class ThirdPartyConnection
    {
        public ThirdParty ThirdParty { get; set; }
        public string Id { get; set; }
        public string Token { get; set; }
    }

    public enum UserType
    {
        Guest,
        User
    }

    public enum ThirdParty
    {
        Facebook
    }

    public class TelephoneNumber
    {
        public int? CountryCode { get; set; }
        public string Number { get; set; }

        public TelephoneNumber()
        { }

        public TelephoneNumber(int countryCode, string number)
        {
            CountryCode = countryCode;
            Number = number;
        }
    }

    public class ApiToken
    {
        public DateTimeOffset CreatedAt { get; set; }
        public string Token { get; set; }
    }
}