Unit test for issue #1766

src/NHibernate.Test/Async/NHSpecificTest/GH1766/Fixture.cs

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+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by AsyncGenerator.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+
+using System.Collections.Generic;
+using System.Linq;
+
+using NUnit.Framework;
+using NHibernate.Linq;
+
+namespace NHibernate.Test.NHSpecificTest.GH1766
+{
+	using System.Threading.Tasks;
+	[TestFixture]
+	public class FixtureAsync : BugTestCase
+	{
+		protected override void OnSetUp()
+		{
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				var parent = new A
+				{
+					Items = new List<B>
+					{
+						new B(),
+						new B(),
+					},
+				};
+
+				foreach (var child in parent.Items)
+				{
+					child.A = parent;
+				}
+
+				session.Persist(parent);
+
+				transaction.Commit();
+			}
+		}
+
+		protected override void OnTearDown()
+		{
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				session.Delete("from System.Object");
+				transaction.Commit();
+			}
+		}
+
+		[Test]
+		public async Task ShouldSetListIndexForInverseListAsync()
+		{
+			using (var session = OpenSession())
+			using (session.BeginTransaction())
+			{
+				var result = await (session.Query<A>().ToListAsync());
+				Assert.That(result, Has.Count.EqualTo(1));
+
+				var root = result.Single();
+				Assert.That(root.Items, Is.Not.Null);
+				Assert.That(root.Items, Has.Count.EqualTo(2));
+
+				var expectedIndex = 0;
+				foreach (var child in root.Items)
+				{
+					Assert.That(child.ListIndex, Is.EqualTo(expectedIndex));
+					++expectedIndex;
+				}
+			}
+		}
+	}
+}

src/NHibernate.Test/NHSpecificTest/GH1766/Entity.cs

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+using System;
+using System.Collections.Generic;
+
+namespace NHibernate.Test.NHSpecificTest.GH1766
+{
+	public class A
+	{
+		public virtual Guid Id { get; set; }
+		public virtual IList<B> Items { get; set; }
+	}
+
+	public class B
+	{
+		public virtual Guid Id { get; set; }
+		public virtual A A { get; set; }
+		public virtual int ListIndex { get; set; }
+	}
+}

src/NHibernate.Test/NHSpecificTest/GH1766/Fixture.cs

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+using System.Collections.Generic;
+using System.Linq;
+
+using NUnit.Framework;
+
+namespace NHibernate.Test.NHSpecificTest.GH1766
+{
+	[TestFixture]
+	public class Fixture : BugTestCase
+	{
+		protected override void OnSetUp()
+		{
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				var parent = new A
+				{
+					Items = new List<B>
+					{
+						new B(),
+						new B(),
+					},
+				};
+
+				foreach (var child in parent.Items)
+				{
+					child.A = parent;
+				}
+
+				session.Persist(parent);
+
+				transaction.Commit();
+			}
+		}
+
+		protected override void OnTearDown()
+		{
+			using (var session = OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				session.Delete("from System.Object");
+				transaction.Commit();
+			}
+		}
+
+		[Test]
+		public void ShouldSetListIndexForInverseList()
+		{
+			using (var session = OpenSession())
+			using (session.BeginTransaction())
+			{
+				var result = session.Query<A>().ToList();
+				Assert.That(result, Has.Count.EqualTo(1));
+
+				var root = result.Single();
+				Assert.That(root.Items, Is.Not.Null);
+				Assert.That(root.Items, Has.Count.EqualTo(2));
+
+				var expectedIndex = 0;
+				foreach (var child in root.Items)
+				{
+					Assert.That(child.ListIndex, Is.EqualTo(expectedIndex));
+					++expectedIndex;
+				}
+			}
+		}
+	}
+}

src/NHibernate.Test/NHSpecificTest/GH1766/Mappings.hbm.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="NHibernate.Test"
+                   namespace="NHibernate.Test.NHSpecificTest.GH1766">
+
+  <class name="A" table="a">
+    <id name="Id" generator="guid.comb" />
+    <list name="Items" generic="true" inverse="true" cascade="all">
+      <key column="aid" />
+      <list-index base="1" column="listindex" />
+      <one-to-many class="B"/>
+    </list>
+  </class>
+
+  <class name="B" table="b">
+    <id name="Id" generator="guid.comb" />
+    <many-to-one name="A" column="aid" />
+    <property name="ListIndex" column="listindex" />
+  </class>
+
+</hibernate-mapping>