def test_cannot_save_empty_city(self):
list_ = List.objects.create()
city = City()
city.name = ''
city.list = list_
with self.assertRaises(ValidationError):
city.save()
city.full_clean()
def test_can_save_the_same_city_to_different_list(self):
list_first = List.objects.create()
list_second = List.objects.create()
City.objects.create(name='City', list=list_first)
city = City(name='City', list=list_second)
city.full_clean()