tests: write a site-options.cfg instead of overriding has_site_option

tests/utilities.py

@@ -64,13 +64,15 @@ def create_temporary_pub(sql_mode=False):
     if os.path.exists(pub.app_dir):
         pub.cfg = {}
         if sql_mode:
-            pub.has_site_option = lambda x: True
             pub.cfg['postgresql'] = {'database': known_elements.sql_db_name, 'user': os.environ['USER']}
         pub.write_cfg()
         return pub
 
     os.mkdir(pub.app_dir)
     if sql_mode:
+        fd = file(os.path.join(pub.app_dir, 'site-options.cfg'), 'w')
+        fd.write('[options]\npostgresql = true\n')
+        fd.close()
         conn = psycopg2.connect(user=os.environ['USER'])
         conn.set_isolation_level(psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)
         cur = conn.cursor()