def METHOD_NAME(self):
    self.assertTrue(uwsgi.cache_set('key1', 'X' * 40, 0, 'items_4_10'))
    self.assertTrue(uwsgi.cache_update('key1', 'X' * 10, 0, 'items_4_10'))
    self.assertTrue(uwsgi.cache_del('key1', 'items_4_10'))
    self.assertIsNone(uwsgi.cache_update('key1', 'X' * 51, 0, 'items_4_10'))
    self.assertTrue(uwsgi.cache_update('key1', 'X' * 50, 0, 'items_4_10'))