Added db4o.

Added guards against most problematic areas.

NzbDrone.Core.Test/Datastore/ObjectDatabaseFixture.cs

@@ -0,0 +1,54 @@
+using System.Linq;
+using System;
+using System.Collections.Generic;
+using FizzWare.NBuilder;
+using FluentAssertions;
+using NUnit.Framework;
+using NzbDrone.Core.Model;
+using NzbDrone.Core.Repository;
+using NzbDrone.Core.Repository.Quality;
+using NzbDrone.Core.Test.Framework;
+using Db4objects.Db4o.Linq;
+
+namespace NzbDrone.Core.Test.Datastore
+{
+    [TestFixture]
+    public class ObjectDatabaseFixture : CoreTest
+    {
+        [SetUp]
+        public void SetUp()
+        {
+            WithObjectDb();
+        }
+
+        [Test]
+        public void should_be_able_to_write_to_database()
+        {
+
+            var series = Builder<Series>.CreateNew().Build();
+
+            ObjDb.Save(series);
+
+            ObjDb.Ext().Purge();
+
+            ObjDb.AsQueryable<Series>().Should().HaveCount(1);
+
+        }
+
+        [Test]
+        public void should_not_store_dirty_data_in_cache()
+        {
+            var episode = Builder<Episode>.CreateNew().Build();
+            
+            //Save series without episode attached
+            ObjDb.Save(episode);
+            
+            ObjDb.AsQueryable<Episode>().Single().Series.Should().BeNull();
+            
+            episode.Series = Builder<Series>.CreateNew().Build();
+
+            ObjDb.AsQueryable<Episode>().Single().Series.Should().BeNull();
+
+        }
+    }
+}