clear the pool after the test

Author: amroel

src/NHibernate.Test/NHSpecificTest/NH1908ThreadSafety/Fixture.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using NHibernate.Util;
 using NUnit.Framework;
 
 namespace NHibernate.Test.NHSpecificTest.NH1908ThreadSafety
@@ -17,6 +18,23 @@ protected override bool AppliesTo(Dialect.Dialect dialect)
 			// http://www.orafaq.com/forum/t/60019/2/ & http://www.ispirer.com/wiki/sqlways/troubleshooting-guide/oracle/import/tns_listener
 		}
 
+		protected override void OnTearDown()
+		{
+			base.OnTearDown();
+
+			if (!(Dialect is Dialect.FirebirdDialect))
+				return;
+
+			// Firebird will pool each connection created during the test and will not drop the created tables
+			// which will result in other tests failing when they try to create tables with same name
+			// By clearing the connection pool the tables will get dropped. This is done by the following code.
+			var fbConnectionType = ReflectHelper.TypeFromAssembly("FirebirdSql.Data.FirebirdClient.FbConnection", "FirebirdSql.Data.FirebirdClient", false);
+			var clearPool = fbConnectionType.GetMethod("ClearPool");
+			var sillyConnection = sessions.ConnectionProvider.GetConnection();
+			clearPool.Invoke(null, new object[] { sillyConnection });
+			sessions.ConnectionProvider.CloseConnection(sillyConnection);
+		}
+
 		[Test]
 		public void UsingFiltersIsThreadSafe()
 		{