NH-2756 - Add test fixture

Author: hazzik

src/NHibernate.Test/NHSpecificTest/NH2756/Fixture.cs

@@ -0,0 +1,35 @@
+using NUnit.Framework;
+
+namespace NHibernate.Test.NHSpecificTest.NH2756
+{
+	public class Fixture : BugTestCase
+	{
+		[Test]
+		public void Saving_SetOfComponentsWithFormulaColumn_ShouldWork()
+		{
+			using (ISession session = OpenSession())
+			using (ITransaction tx = session.BeginTransaction())
+			{
+				var file = new File { Filename = "MyFilename" };
+				var document = new Document();
+				document.Files.Add(new DocumentFile { Description = "MyDescription", File = file });
+
+				session.Save(file);
+				session.Save(document);
+
+				tx.Commit();
+			}
+		}
+
+		protected override void OnTearDown()
+		{
+			using (ISession session = OpenSession())
+			using (ITransaction tx = session.BeginTransaction())
+			{
+				session.Delete("from Document");
+				session.Delete("from File");
+				tx.Commit();
+			}
+		}
+	}
+}

src/NHibernate.Test/NHSpecificTest/NH2756/Mappings.hbm.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
+                   assembly="NHibernate.Test"
+                   namespace="NHibernate.Test.NHSpecificTest.NH2756">
+  <class name="Document" table="documents">
+    <id name="Id" column="id">
+      <generator class="guid" />
+    </id>
+    <set name="Files" table="document_files">
+      <key column="document_id" />
+      <composite-element class="DocumentFile">
+        <property name="Description" column="description" />
+        <property name="Filename" formula="(select files.filename from files where files.id = file_id)" access="backfield" />
+        <many-to-one name="File" column="file_id" />
+      </composite-element>
+    </set>
+  </class>
+
+  <class name="File" table="files">
+    <id name="Id" column="id">
+      <generator class="guid" />
+    </id>
+    <property name="Filename" column="filename" />
+  </class>
+</hibernate-mapping>

src/NHibernate.Test/NHSpecificTest/NH2756/Model.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+
+namespace NHibernate.Test.NHSpecificTest.NH2756
+{
+	public class Document
+	{
+		public Document()
+		{
+			Files = new List<DocumentFile>();
+		}
+
+		public virtual Guid Id { get; set; }
+		public virtual ICollection<DocumentFile> Files { get; set; }
+	}
+
+	public class DocumentFile
+	{
+		public string Description { get; set; }
+		public string Filename { get; private set; }
+		public File File { get; set; }
+	}
+
+	public class File
+	{
+		public virtual Guid Id { get; set; }
+		public virtual string Filename { get; set; }
+	}
+}

src/NHibernate.Test/NHibernate.Test.csproj

@@ -676,6 +676,8 @@
     <Compile Include="NHSpecificTest\BagWithLazyExtraAndFilter\Domain.cs" />
     <Compile Include="NHSpecificTest\BagWithLazyExtraAndFilter\Fixture.cs" />
     <Compile Include="Component\Basic\ComponentWithUniqueConstraintTests.cs" />
+    <Compile Include="NHSpecificTest\NH2756\Fixture.cs" />
+    <Compile Include="NHSpecificTest\NH2756\Model.cs" />
     <Compile Include="NHSpecificTest\NH3392\Fixture.cs" />
     <Compile Include="NHSpecificTest\NH3392\Model.cs" />
     <Compile Include="NHSpecificTest\NH3459\Fixture.cs" />
@@ -2979,6 +2981,7 @@
     <EmbeddedResource Include="NHSpecificTest\NH1291AnonExample\Mappings.hbm.xml" />
   </ItemGroup>
   <ItemGroup>
+    <EmbeddedResource Include="NHSpecificTest\NH2756\Mappings.hbm.xml" />
     <EmbeddedResource Include="NHSpecificTest\NH3392\Mappings.hbm.xml">
       <SubType>Designer</SubType>
     </EmbeddedResource>