def test_val_in_list(self):
cont = [1, 2, 3, 4]
func = validators.one_of(cont)
assert func(1) == 1
def test_val_not_in_list(self):
cont = [1, 2, 3, 4]
func = validators.one_of(cont)
raises_Invalid(func)(5)
def test_empty_val_accepted(self):
cont = [1, 2, 3, 4]
func = validators.one_of(cont)
assert func("") == ""
