def METHOD_NAME(vpcs_device):
    with patch('gns3.base_node.BaseNode.controllerHttpPost') as mock:
        vpcs_device.setStatus(Node.started)
        vpcs_device.stop()
        assert mock.called
        args, kwargs = mock.call_args
        assert args[0] == "/nodes/{node_id}/stop".format(node_id=vpcs_device.node_id())