def test_unit_size_plural_bad_string_quantity(): Ingredient.unit_size_plural("sack", "sdf")
def test_unit_size_plural_neg_quantity(): Ingredient.unit_size_plural("sack", -2)
def test_unit_size_plural_zero_quantity(): Ingredient.unit_size_plural("sack", 0)
def test_unit_size_plural_bad_unit_size(): Ingredient.unit_size_plural("bad unit size", 5)