NH-2176 - Add test case

Author: hazzik

src/NHibernate.Test/NHSpecificTest/NH2176/Fixture.cs

@@ -0,0 +1,76 @@
+using System;
+using System.Transactions;
+using NUnit.Framework;
+
+namespace NHibernate.Test.NHSpecificTest.NH2176
+{
+    [TestFixture]
+    public class Fixture : BugTestCase
+    {
+        protected override void OnSetUp()
+        {
+            base.OnSetUp();
+            using (var s = OpenSession())
+            using (var tx = s.BeginTransaction())
+            {
+                var steve = new Person {Name = "Steve"};
+                var peter = new Person {Name = "Peter"};
+                var simon = new Person {Name = "Simon"};
+                var paul = new Person {Name = "Paul"};
+                var john = new Person {Name = "John"};
+                var eric = new Person {Name = "Eric"};
+
+                s.Save(steve);
+                s.Save(peter);
+                s.Save(simon);
+                s.Save(paul);
+                s.Save(john);
+                s.Save(eric);
+
+                tx.Commit();
+            }
+        }
+
+        protected override void OnTearDown()
+        {
+            base.OnTearDown();
+            using (var s = OpenSession())
+            using (var tx = s.BeginTransaction())
+            {
+                s.Delete("from Person");
+                tx.Commit();
+            }
+        }
+
+        // Whilst this bug seems specific to Oracle I think it is valid to run the
+        // test against all database types.
+        [Test]
+        public void MultipleConsecutiveTransactionScopesCanBeUsedInsideASingleSession()
+        {
+            using (var s = OpenSession())
+            {
+                // usually fails after just a few loops in oracle
+                // this can be run for 10000 loops in sql server without problem
+                for (var i = 0; i < 100; ++i)
+                {
+                    Console.WriteLine(i.ToString());
+
+                    using (var scope = new TransactionScope())
+                    {
+                        var criteria = s.CreateCriteria<Person>();
+                        var people = criteria.List<Person>();
+
+                        Assert.That(people.Count, Is.EqualTo(6));
+
+                        scope.Complete();
+                    }
+
+                    // The exeption is caused by a race condition between two threads.
+                    // This can be demonstracted by uncommenting the following line which
+                    // causes the test to run without an exception.
+                    //Thread.Sleep(1000);
+                }
+            }
+        }
+    }
+}

src/NHibernate.Test/NHSpecificTest/NH2176/Mappings.hbm.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
+				   namespace="NHibernate.Test.NHSpecificTest.NH2176"
+				   assembly="NHibernate.Test"
+>
+	<class name="Person" table="NH2176_Person">
+
+    <id name="Id" column="PersonId">
+			<generator class="identity"/>
+		</id>
+
+    <property name="Name" column="Name" />
+
+  </class>
+</hibernate-mapping>

src/NHibernate.Test/NHSpecificTest/NH2176/Model.cs

@@ -0,0 +1,8 @@
+namespace NHibernate.Test.NHSpecificTest.NH2176
+{
+	public class Person
+	{
+		public virtual int Id { get; set; }
+		public virtual string Name { get; set; }
+	}
+}

src/NHibernate.Test/NHibernate.Test.csproj

@@ -718,6 +718,8 @@
     <Compile Include="Component\Basic\ComponentWithUniqueConstraintTests.cs" />
     <Compile Include="NHSpecificTest\NH3583\Entity.cs" />
     <Compile Include="NHSpecificTest\NH3583\AutoFlushFixture.cs" />
+    <Compile Include="NHSpecificTest\NH2176\Fixture.cs" />
+    <Compile Include="NHSpecificTest\NH2176\Model.cs" />
     <Compile Include="NHSpecificTest\NH3372\Entity.cs" />
     <Compile Include="NHSpecificTest\NH3372\Fixture.cs" />
     <Compile Include="NHSpecificTest\NH3453\Classes.cs" />
@@ -3128,6 +3130,7 @@
     <EmbeddedResource Include="NHSpecificTest\NH1291AnonExample\Mappings.hbm.xml" />
   </ItemGroup>
   <ItemGroup>
+    <EmbeddedResource Include="NHSpecificTest\NH2176\Mappings.hbm.xml" />
     <EmbeddedResource Include="VersionTest\Db\MsSQL\ProductWithVersionAndLazyProperty.hbm.xml" />
     <EmbeddedResource Include="NHSpecificTest\NH3754\Mappings.hbm.xml" />
     <EmbeddedResource Include="LazyComponentTest\Person.hbm.xml" />