def METHOD_NAME(self):
    self.mv.active_range = (self.model_time,
                            (self.model_time +
                             timedelta(seconds=1.5 * self.time_step)))
    self.mv.prepare_for_model_step(self.sc, self.time_step,
                                   self.model_time)
    # model_time + 1.5 * time_step should be within active range
    assert self.mv.active is True