def it_calculates_season_changes():
     cov = Covenant()
     folk = Covenfolk("george", "magi")
     cov.covenfolken.add_covenfolk(folk)
     assert cov.calculate_expenditures() == 5.5
     cov.change_season("autumn")
     assert cov.calculate_expenditures() == 11.0
 def it_can_change_seasons():
     cov = Covenant()
     cov.change_season("autumn")
     assert cov.season == "autumn"