def METHOD_NAME(self):
    self.load_phase("pt.jcpds")
    num_line_items = len(self.widget.cake_widget.phases[0].line_items)
    self.model.phase_model.add_reflection(0)
    self.assertEqual(len(self.widget.cake_widget.phases[0].line_items),
                     num_line_items + 1)