def METHOD_NAME(self):
    self.model.pattern_model.load_pattern(os.path.join(data_path, 'pattern_001.xy'))
    self.widget.bkg_pattern_gb.setChecked(True)
    self.widget.bkg_pattern_inspect_btn.toggle()
    self.widget.bkg_pattern_gb.setChecked(False)
    x_bkg, y_bkg = self.widget.pattern_widget.bkg_item.getData()
    self.assertIsNone(x_bkg)
    self.assertIsNone(y_bkg)