def METHOD_NAME(self, mock_request_server_info: MagicMock) -> None:
    s = bcs.ClientSession()
    s.request_server_info()
    assert mock_request_server_info.call_count == 1
    assert mock_request_server_info.call_args[0] == ()
    assert mock_request_server_info.call_args[1] == {}