'Generic key relations are represented by managers, and can be controlled like managers'

def test_generic_key_managers(self):

    pro = Book.objects.using(u'other').create(title=u'Pro    Django', published=datetime.date(2008, 12, 16))
    review1 = Review.objects.using(u'other').create(source=u'Python    Monthly', content_object=pro)
    self.assertEqual(pro.reviews.db, u'other')
    self.assertEqual(pro.reviews.db_manager(u'default').db, u'default')
    self.assertEqual(pro.reviews.db_manager(u'default').all().db, u'default')
