HbmOrderingFixture.cs

using System;
using System.IO;
using System.Reflection;
using System.Reflection.Emit;
using NHibernate.Cfg;
using NUnit.Framework;

namespace NHibernate.Test.CfgTest
{
	#region Classes used by the mappings defined in the Dynamic Assembly

	public class A
	{
		public int Id
		{
			get { return id_; }
			set { id_ = value; }
		}

		private int id_;
	}

	public class B : A
	{
		public int Value
		{
			get { return value_; }
			set { value_ = value; }
		}

		private int value_;
	}

	public class C : B
	{
		public int Description
		{
			get { return description_; }
			set { description_ = value; }
		}

		private int description_;
	}

	#endregion

	/// <summary>
	/// Test fixture for NH-178
	/// </summary>
	[TestFixture]
	public class HbmOrderingFixture
	{
		// Working directory
		private static string dir_;

		// Base class mapping
		private const string aJoinedHbmXml =
			@"<?xml version=""1.0"" encoding=""utf-8"" ?>
        <hibernate-mapping xmlns=""urn:nhibernate-mapping-2.2"" default-lazy=""false"">
          <class name=""NHibernate.Test.CfgTest.A, NHibernate.Test"" table=""A"">
            <id name=""Id"">
              <generator class=""assigned"" />
            </id>
          </class>
        </hibernate-mapping>";

		// Derived class mapping
		private const string bJoinedHbmXml =
			@"<?xml version=""1.0"" encoding=""utf-8"" ?>
        <hibernate-mapping xmlns=""urn:nhibernate-mapping-2.2"" default-lazy=""false"">
          <joined-subclass 
              name=""NHibernate.Test.CfgTest.B, NHibernate.Test""
              extends=""NHibernate.Test.CfgTest.A, NHibernate.Test""
              table=""B"">
            <key column=""Id"" />
            <property name=""Value"" type=""Int32"" />
          </joined-subclass>
        </hibernate-mapping>";

		// Add another level
		private const string cJoinedHbmXml =
			@"<?xml version=""1.0"" encoding=""utf-8"" ?>
        <hibernate-mapping xmlns=""urn:nhibernate-mapping-2.2"" default-lazy=""false"">
          <joined-subclass 
              name=""NHibernate.Test.CfgTest.C, NHibernate.Test""
              extends=""NHibernate.Test.CfgTest.B, NHibernate.Test""
              table=""B"">
            <key column=""Id"" />
            <property name=""Description"" type=""String"" />
          </joined-subclass>
        </hibernate-mapping>";

		private const string aSubclassHbmXml =
			@"<?xml version=""1.0"" encoding=""utf-8"" ?>
        <hibernate-mapping xmlns=""urn:nhibernate-mapping-2.2"" default-lazy=""false"">
          <class name=""NHibernate.Test.CfgTest.A, NHibernate.Test"" table=""A"" discriminator-value=""0"">
            <id name=""Id"">
              <generator class=""assigned"" />
            </id>
			<discriminator column=""disc_col"" type=""Int32"" />
          </class>
        </hibernate-mapping>";

		// Derived class mapping
		private const string bSubclassHbmXml =
			@"<?xml version=""1.0"" encoding=""utf-8"" ?>
        <hibernate-mapping xmlns=""urn:nhibernate-mapping-2.2"" default-lazy=""false"">
          <joined-subclass 
              name=""NHibernate.Test.CfgTest.B, NHibernate.Test""
              extends=""NHibernate.Test.CfgTest.A, NHibernate.Test""
              table=""B""
			  discriminator-value=""1"">
            <key column=""Id"" />
            <property name=""Value"" type=""Int32"" />
          </joined-subclass>
        </hibernate-mapping>";

		// Add another level
		private const string cSubclassHbmXml =
			@"<?xml version=""1.0"" encoding=""utf-8"" ?>
        <hibernate-mapping xmlns=""urn:nhibernate-mapping-2.2"" default-lazy=""false"">
          <joined-subclass 
              name=""NHibernate.Test.CfgTest.C, NHibernate.Test""
              extends=""NHibernate.Test.CfgTest.B, NHibernate.Test""
              table=""B""
			  discriminator-value=""2"">
            <key column=""Id"" />
            <property name=""Description"" type=""String"" />
          </joined-subclass>
        </hibernate-mapping>";

		#region NUnit.Framework.TestFixture Members

		[OneTimeSetUp]
		public void TestFixtureSetUp()
		{
			dir_ = TestContext.CurrentContext.TestDirectory;

			// Create hbm files (ideally, we could just embed them directly into the
			// assembly - same as VS does when 'Build Action' = 'Embedded Resource' - but
			// I could not find a way to do this, so we use files instead)

			StreamWriter aw = new StreamWriter(Path.Combine(dir_, "A.hbm.xml"));
			aw.Write(aJoinedHbmXml);
			aw.Close();

			StreamWriter bw = new StreamWriter(Path.Combine(dir_, "B.hbm.xml"));
			bw.Write(bJoinedHbmXml);
			bw.Close();

			StreamWriter cw = new StreamWriter(Path.Combine(dir_, "C.hbm.xml"));
			cw.Write(cJoinedHbmXml);
			cw.Close();

			StreamWriter asw = new StreamWriter(Path.Combine(dir_, "A.subclass.hbm.xml"));
			asw.Write(aJoinedHbmXml);
			asw.Close();

			StreamWriter bsw = new StreamWriter(Path.Combine(dir_, "B.subclass.hbm.xml"));
			bsw.Write(bJoinedHbmXml);
			bsw.Close();

			StreamWriter csw = new StreamWriter(Path.Combine(dir_, "C.subclass.hbm.xml"));
			csw.Write(cJoinedHbmXml);
			csw.Close();
		}

		[SetUp]
		public virtual void SetUp()
		{
		}

		[TearDown]
		public virtual void TearDown()
		{
		}

		[OneTimeTearDown]
		public virtual void TestFixtureTearDown()
		{
		}

		#endregion

		[Test]
		public void TopDownJoined()
		{
			AssemblyName assemblyName = new AssemblyName();
			assemblyName.Name = "MyTestA.dll";
			AssemblyBuilder assemblyBuilder =
				AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.RunAndSave, dir_);
			ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule(assemblyName.Name, assemblyName.Name, true);
			assemblyBuilder.AddResourceFile("A.hbm.xml", "A.hbm.xml");
			assemblyBuilder.AddResourceFile("B.hbm.xml", "B.hbm.xml");
			assemblyBuilder.AddResourceFile("C.hbm.xml", "C.hbm.xml");
			assemblyBuilder.Save(assemblyName.Name);

			Configuration cfg = new Configuration();
			cfg.AddAssembly(Assembly.LoadFile(Path.Combine(dir_, assemblyName.Name)));
			// if no exception, success
		}

		[Test]
		public void BottomUpJoined()
		{
			AssemblyName assemblyName = new AssemblyName();
			assemblyName.Name = "MyTestB.dll";
			AssemblyBuilder assemblyBuilder =
				AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.RunAndSave, dir_);
			ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule(assemblyName.Name, assemblyName.Name, true);
			assemblyBuilder.AddResourceFile("C.hbm.xml", "C.hbm.xml");
			assemblyBuilder.AddResourceFile("B.hbm.xml", "B.hbm.xml");
			assemblyBuilder.AddResourceFile("A.hbm.xml", "A.hbm.xml");
			assemblyBuilder.Save(assemblyName.Name);

			Configuration cfg = new Configuration();
			cfg.AddAssembly(Assembly.LoadFile(Path.Combine(dir_, assemblyName.Name)));
			// if no exception, success
		}

		[Test]
		public void MixedJoined()
		{
			AssemblyName assemblyName = new AssemblyName();
			assemblyName.Name = "MyTestC.dll";
			AssemblyBuilder assemblyBuilder =
				AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.RunAndSave, dir_);
			ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule(assemblyName.Name, assemblyName.Name, true);
			assemblyBuilder.AddResourceFile("B.hbm.xml", "B.hbm.xml");
			assemblyBuilder.AddResourceFile("A.hbm.xml", "A.hbm.xml");
			assemblyBuilder.AddResourceFile("C.hbm.xml", "C.hbm.xml");
			assemblyBuilder.Save(assemblyName.Name);

			Configuration cfg = new Configuration();
			cfg.AddAssembly(Assembly.LoadFile(Path.Combine(dir_, assemblyName.Name)));
			// if no exception, success
		}

		[Test]
		public void MixedSubclass()
		{
			AssemblyName assemblyName = new AssemblyName();
			assemblyName.Name = "MyTestCSubclass.dll";
			AssemblyBuilder assemblyBuilder =
				AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.RunAndSave, dir_);
			ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule(assemblyName.Name, assemblyName.Name, true);
			assemblyBuilder.AddResourceFile("B.subclass.hbm.xml", "B.hbm.xml");
			assemblyBuilder.AddResourceFile("A.subclass.hbm.xml", "A.hbm.xml");
			assemblyBuilder.AddResourceFile("C.subclass.hbm.xml", "C.hbm.xml");
			assemblyBuilder.Save(assemblyName.Name);

			Configuration cfg = new Configuration();
			cfg.AddAssembly(Assembly.LoadFile(Path.Combine(dir_, assemblyName.Name)));
			// if no exception, success
		}
	}
}