working changes

Author: prashantmital

test/__init__.py

@@ -573,6 +573,7 @@ def check_auth_with_sharding(self, func):
                              func=func)
 
     def is_topology_type(self, topologies):
+        # TODO: add support for 'sharded-replicaset' topology type.
         if 'single' in topologies and not (self.is_mongos or self.is_rs):
             return True
         if 'replicaset' in topologies and self.is_rs: