def METHOD_NAME(self):
    """
    Load necessary plugins for testing.
    """
    filenames = ['../input/vpp_*.csv', '../input/vpp2_*.csv']
    self._widget = main(filenames)
    self._select = self._widget.currentWidget().PostprocessorSelectPlugin
    self._control = self._widget.currentWidget().MediaControlPlugin
    self._window = self._widget.currentWidget().FigurePlugin
    self._window.setFixedSize(QtCore.QSize(400, 400))