I have some code like this:

class LoadDataTask():
    def do(self):
        mw = main_window.MainWindow.the()
        mw.visual_log_signal.emit(f'loading data from file...', logging.INFO)
        file_path = pathlib.Path(main_window.LOAD_FILE_PATH_STR)
        try:
            with open(file_path, 'r') as f:
                contents = f.read()
        except FileNotFoundError:
            msg = f'Load file not found: {main_window.LOAD_FILE_PATH_STR}'
            logger.error(msg)
            mw.visual_log_signal.emit(msg, logging.ERROR)
            return
        except BaseException as e:
            raise Exception(f'TODO: {e}')

… if the file is not found a visual_log_signal is emitted with level ERROR.
But a level-INFO emit has already occurred on the same signal a few lines earlier.

This is my test:

def test_if_json_file_not_file_visual_log(qtbot):
    mw = main_window.MainWindow.the()
    mw.gui_stage_2()
    non_existent_file_path_str = '/nowhere/not_a_directory/nonexistent_file_path.json'     
    with mock.patch('main_window.LOAD_FILE_PATH_STR', new_callable=mock.PropertyMock(return_value=non_existent_file_path_str)):
        def check_params_cb(*args, **kwargs):
            logger.info(f'+++ args {args}, kwargs {kwargs}') # args is a tuple
            assert 'load file not found' in args[0]
            return True
        with qtbot.waitSignal(mw.visual_log_signal, check_params_cb=check_params_cb, timeout=500) as mock_signal:
                load_data_task.LoadDataTask().do()

… although the logger.error(..) line in the code runs, only one (INFO) signal emit is reported in check_params_cb. How can I detect the second emit?

NB I found qtbot.waitSignals(..) … but this seems to be for more than one different signal. Also I couldn’t find a practical example to understand how this works.