def METHOD_NAME(self):
    (all_data, _, _), (_, y_test), (_, _), (_, _), (_, _) = self.mnist
    self.assertRaises(
        ValueError,
        self.defence_no_trust.set_params,
        x_train=-all_data,
        y_train=y_test,
    )
    self.assertRaises(ValueError, self.defence_trust.set_params, x_train=-all_data, y_train=y_test)