Simple.Data.MongoDb dynamics

gistfile1.cs

namespace Things.IO.Mongo
{
    using System;
    using MongoDB.Bson.Serialization;
    using MongoDB.Driver;
    using NUnit.Framework;
    using Simple.Data;
    using Simple.Data.MongoDb;

    internal static class DatabaseHelper
    {
        static DatabaseHelper()
        {
            BsonSerializer.SerializationProvider = new DynamicSerializationProvider();
        }

        public static dynamic Open()
        {
            return Database.Opener.OpenMongo("mongodb://localhost/simpleDataTests?safe=true");
        }

        public static void Reset()
        {
            var server = MongoServer.Create("mongodb://localhost/?safe=true");
            server.Connect();
            server.DropDatabase("simpleDataTests");
            InsertData(server.GetDatabase("simpleDataTests"));
        }

        private static void InsertData(MongoDatabase db)
        {
            var listings = new[]
            {
                new Listing {Id = 1, Title = "Bike", Description = "Mountain bike",
                    Fields = new {
                        Color = "Red", 
                        ManufactureDate = new DateTime(2001, 1, 1)
                    }
                },

                new Listing {Id = 2, Title = "Toast", Description = "Burnt to the crisp",
                    Fields = new {
                        NukeFactor = "Mental",
                        PowerRating = 10000
                    }
                }
            };

            db.GetCollection("Listings").InsertBatch(listings);
        }
    }

    public class Listing
    {
        public int Id { get; set; }
        public string Title { get; set; }
        public string Description { get; set; }

        public dynamic Fields { get; set; }

        public override string ToString()
        {
            return string.Format("Id: {0}, Title: {1}, Description: {2}", Id, Title, Description);
        }
    }

    [TestFixture]
    public class MongoThings
    {
        [TestFixtureSetUp]
        public void Setup()
        {
            DatabaseHelper.Reset();
        }

        [Test]
        public void DynamicSupport()
        {
            var db = DatabaseHelper.Open();
            Listing listing = db.Listings.FindById(1);

            Assert.NotNull(listing);

            // Static fields
            Assert.That(listing.Title, Is.EqualTo("Bike"));
            Assert.That(listing.Description, Is.EqualTo("Mountain bike"));

            // Dynamic fields
            Assert.That(listing.Fields.Color, Is.EqualTo("Red"));
            Assert.That(listing.Fields.ManufactureDate, Is.EqualTo(new DateTime(2001, 1, 1)));

            Console.WriteLine("Inserted listing " + listing);
        }
    }
}