Move clear pool to CreateSchema

Author: bahusoid

src/NHibernate.Test/TestCase.cs

@@ -292,6 +292,17 @@ protected virtual void AddMappings(Configuration configuration)
 
 		protected virtual void CreateSchema()
 		{
+			if (Sfi?.ConnectionProvider.Driver is FirebirdClientDriver fbDriver)
+			{
+				// Firebird will pool each connection created during the test and will marked as used any table
+				// referenced by queries. It will at best delays those tables drop until connections are actually
+				// closed, or immediately fail dropping them.
+				// This results 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.
+				// Moved from NH1908 test case, contributed by Amro El-Fakharany.
+				fbDriver.ClearPool(null);
+			}
+			
 			using (var optionalConnection = OpenConnectionForSchemaExport())
 				SchemaExport.Create(OutputDdl, true, optionalConnection);
 		}
@@ -303,17 +314,6 @@ protected virtual void DropSchema()
 
 		public static void DropSchema(bool useStdOut, SchemaExport export, ISessionFactoryImplementor sfi, Func<DbConnection> getConnection = null)
 		{
-			if (sfi?.ConnectionProvider.Driver is FirebirdClientDriver fbDriver)
-			{
-				// Firebird will pool each connection created during the test and will marked as used any table
-				// referenced by queries. It will at best delays those tables drop until connections are actually
-				// closed, or immediately fail dropping them.
-				// This results 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.
-				// Moved from NH1908 test case, contributed by Amro El-Fakharany.
-				fbDriver.ClearPool(null);
-			}
-
 			using(var optionalConnection = getConnection?.Invoke())
 				export.Drop(useStdOut, true, optionalConnection);
 		}