custom_zodb: drop views first

tables() method of ZMySQLDA returns also views, which are not deleted
with DROP TABLE but with DROP VIEW instruction.

product/ERP5Type/tests/custom_zodb.py

@@ -69,6 +69,11 @@ else:
   from Products.ERP5.ERP5Site import default_sql_connection_string
   sql_db = Products.ZMySQLDA.db.DB(os.environ.get('erp5_sql_connection_string',
                                                   default_sql_connection_string))
+
+  _, view_list = sql_db.query("SHOW FULL TABLES WHERE table_type='VIEW'")
+  if view_list:
+    sql_db.query('DROP VIEW ' +
+                 ','.join('`%s`' % view[0] for view in view_list))
   table_list = sql_db.tables()
   if table_list:
     sql_db.query('DROP TABLE ' +