def METHOD_NAME(self):
    @cache.cache(keyarg=0, maxage=10)
    def up(a, b, c):
        return a+b+c
    self.assertEqual(up(1, 1, 1), 3)
    up.update(1, 0)
    up.update(2, 9)
    self.assertEqual(up(1, 0, 0), 0)
    self.assertEqual(up(2, 0, 0), 9)