'Test the fitter modifies model.parameters.
Uses an iraf example.'

def test_par_against_iraf(self):

    new_model = self.linear_fitter(self.model, self.x, self.y)
    print(self.y, self.x)
    utils.assert_allclose(new_model.parameters, np.array([4826.1066602783685, 952.8943813407858, 12.641236013982386, (-1.7910672553339604), 0.9025288436671132]), rtol=(10 ** (-2)))
