human
Solve the following python programming problem given the following code:
@ mock.patch ('nova.cells.messaging._TargetedMessage') 
def test_rebuild_sig(self, mock_msg) : 
    def wire(version) : 
        cells_mgr = manager.CellsManager () 
        def cast(context, method, * args, **kwargs) : 
            fn = getattr (cells_mgr, method) 
            fn (context, * args, ** kwargs) 
cells_mgr.cast = cast 
        return cells_mgr 
cells_rpcapi = self.compute_api.cells_rpcapi 
    client = cells_rpcapi.client 
    with mock.patch.object (client, 'prepare', side_effect = wire) : 
        inst = self._create_fake_instance_obj () 
        inst.cell_name = 'mycell' 
        cells_rpcapi.rebuild_instance (self.context, inst, 'pass', None, None, None, None, None, recreate = False, on_shared_storage = False, host = 'host', preserve_ephemeral = True, kwargs = None) 
self.assertEqual (1, inst.call_count) 

    
    

    Fix the buggy line: self.assertEqual (1, inst.call_count)
assistant
#Here is Python program to fix the buggy line: self.

self.assertEqual (1, mock_msg.call_count)