Test case

Author: bahusoid

src/NHibernate.Test/NHSpecificTest/GH3176/Entity.cs

@@ -0,0 +1,13 @@
+namespace NHibernate.Test.NHSpecificTest.GH3176 {
+	public class Entity
+	{
+		public virtual int Id { get; set; }
+		public virtual string Name { get; set; }
+		public virtual Component Component { get; set; }
+	}
+
+	public class Component
+	{
+		public virtual string Field { get; set; }
+	}
+}

src/NHibernate.Test/NHSpecificTest/GH3176/FixtureByCode.cs

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+using System.Linq;
+using NHibernate.Cache;
+using NHibernate.Cfg;
+using NHibernate.Cfg.MappingSchema;
+using NHibernate.Linq;
+using NHibernate.Mapping.ByCode;
+using NUnit.Framework;
+
+namespace NHibernate.Test.NHSpecificTest.GH3176
+{
+	[TestFixture]
+	public class ByCodeFixture : TestCaseMappingByCode
+	{
+		protected override HbmMapping GetMappings()
+		{
+			var mapper = new ModelMapper();
+			mapper.Class<Entity>(
+				rc =>
+				{
+					rc.Id(x => x.Id, m => m.Generator(Generators.Identity));
+					rc.Property(x => x.Name);
+					rc.Component(
+						x => x.Component,
+						m =>
+						{
+							m.Property(x => x.Field);
+							m.Lazy(true);
+						});
+					rc.Cache(x => x.Usage(CacheUsage.ReadWrite));
+				});
+
+			return mapper.CompileMappingForAllExplicitlyAddedEntities();
+		}
+
+		protected override void Configure(Configuration configuration)
+		{
+			base.Configure(configuration);
+			configuration.Properties[Environment.CacheProvider] = typeof(HashtableCacheProvider).AssemblyQualifiedName;
+			configuration.Properties[Environment.UseSecondLevelCache] = "true";
+			configuration.Properties[Environment.GenerateStatistics] = "true";
+		}
+
+		protected override void OnSetUp()
+		{
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				var e1 = new Entity { Name = "Bob", Component = new Component() { Field = "Jim" } };
+				session.Save(e1);
+
+				var e2 = new Entity { Name = "Sally" };
+				session.Save(e2);
+
+				transaction.Commit();
+			}
+		}
+
+		protected override void OnTearDown()
+		{
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				session.CreateQuery("delete from Entity").ExecuteUpdate();
+				transaction.Commit();
+			}
+		}
+
+		[Test]
+		public void TestPreLoadedData()
+		{
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				// Load the entities into the second-level cache.
+				session.Query<Entity>().WithOptions(o => o.SetCacheable(true)).ToList();
+
+				var result = session.Query<Entity>().WithOptions(o => o.SetCacheable(true)).Fetch(e => e.Component).First();
+
+				Assert.That(NHibernateUtil.IsPropertyInitialized(result, "Component"), Is.True);
+
+				var field = result.Component?.Field;
+
+				Assert.That(field, Is.EqualTo("Jim"));
+			}
+
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				var result = session.Query<Entity>().WithOptions(o => o.SetCacheable(true)).Fetch(e => e.Component).First();
+
+				Assert.That(NHibernateUtil.IsPropertyInitialized(result, "Component"), Is.True);
+
+				var field = result.Component?.Field;
+
+				Assert.That(field, Is.EqualTo("Jim"));
+			}
+		}
+
+		[Test]
+		public void TestNonPreLoadedData()
+		{
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				var result = session.Query<Entity>().WithOptions(o => o.SetCacheable(true)).Fetch(e => e.Component).First();
+
+				Assert.That(NHibernateUtil.IsPropertyInitialized(result, "Component"), Is.True);
+
+				var field = result.Component?.Field;
+
+				Assert.That(field, Is.EqualTo("Jim"));
+			}
+
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				var result = session.Query<Entity>().WithOptions(o => o.SetCacheable(true)).Fetch(e => e.Component).First();
+
+				Assert.That(NHibernateUtil.IsPropertyInitialized(result, "Component"), Is.True);
+
+				var field = result.Component?.Field;
+
+				Assert.That(field, Is.EqualTo("Jim"));
+			}
+		}
+	}
+}