'Test Gaussian family with canonical identity link'

@classmethod
def setup_class(cls):

    cls.decimal_resids = DECIMAL_3
    cls.decimal_params = DECIMAL_2
    cls.decimal_bic = DECIMAL_0
    cls.decimal_bse = DECIMAL_3
    from statsmodels.datasets.longley import load
    cls.data = load()
    cls.data.exog = add_constant(cls.data.exog, prepend=False)
    cls.res1 = GLM(cls.data.endog, cls.data.exog, family=sm.families.Gaussian()).fit()
    from .results.results_glm import Longley
    cls.res2 = Longley()
