NH-2176 - Fixing current system transaction handling.

Author: fredericDelaporte

src/NHibernate.Test/DebugSessionFactory.cs

@@ -53,24 +53,27 @@ public bool CheckSessionsWereClosed()
 			var allClosed = true;
 			foreach (var session in _openedSessions)
 			{
-				if (session.IsOpen)
+				var txContext = session.TransactionContext;
+				txContext?.WaitOne();
+
+				if (!session.IsOpen)
+					continue;
+
+				if (txContext?.ShouldCloseSessionOnDistributedTransactionCompleted ?? false)
 				{
-					if (session.TransactionContext?.ShouldCloseSessionOnDistributedTransactionCompleted ?? false)
+					// Delayed transactions not having completed and closed their sessions? Give them a chance to complete.
+					Thread.Sleep(100);
+					if (!session.IsOpen)
 					{
-						// Delayed transactions not having completed and closed their sessions? Give them a chance to complete.
-						Thread.Sleep(100);
-						if (!session.IsOpen)
-						{
-							_log.Warn($"Test case had a delayed close of session {session.SessionId}.");
-							continue;
-						}
+						_log.Warn($"Test case had a delayed close of session {session.SessionId}.");
+						continue;
 					}
-
-					_log.Error($"Test case didn't close session {session.SessionId}, closing");
-					allClosed = false;
-					(session as ISession)?.Close();
-					(session as IStatelessSession)?.Close();
 				}
+
+				_log.Error($"Test case didn't close session {session.SessionId}, closing");
+				allClosed = false;
+				(session as ISession)?.Close();
+				(session as IStatelessSession)?.Close();
 			}
 
 			return allClosed;