def METHOD_NAME(self):
    with self.assertRaises(ValueError):
        class_creator.create_im_sim(
            multi_band_list=None,
            multi_band_type="WRONG",
            kwargs_model=None,
            bands_compute=None,
            image_likelihood_mask_list=None,
            band_index=0,
        )
    with self.assertRaises(ValueError):
        class_creator.create_im_sim(
            multi_band_list=[[], []],
            multi_band_type="multi-linear",
            linear_solver=False,
            kwargs_model=None,
            bands_compute=None,
            image_likelihood_mask_list=None,
            band_index=0,
        )