Delay entity insert on Persist until session is flushed

Co-authored-by: Frédéric Delaporte <[email protected]>

Author: hazzik

src/NHibernate.Test/Async/NHSpecificTest/GH1754/Fixture.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+
+namespace NHibernate.Test.NHSpecificTest.GH1754
+{
+	public class Entity
+	{
+		public virtual int Id { get; set; }
+		public virtual string Name { get; set; }
+		public virtual ISet<ChildEntity> Children { get; set; } = new HashSet<ChildEntity>();
+	}
+
+	public class EntityWithoutDeleteOrphan
+	{
+		public virtual int Id { get; set; }
+		public virtual string Name { get; set; }
+		public virtual ISet<ChildEntity> Children { get; set; } = new HashSet<ChildEntity>();
+	}
+
+	public class ChildEntity
+	{
+		public virtual Guid Id { get; set; }
+		public virtual string Name { get; set; }
+	}
+}