def METHOD_NAME(self):
    k = 'key'
    v = 'value'
    suffix = 'suffix'
    prefix = 'prefix'
    # make sure appends and prepends go to cold route
    self.assertTrue(self.mcrouter.set(k, v, exptime=1000))
    self.assertEqual(self.mc_cold.get(k), v)
    self.assertEqual(self.mcrouter.append(k, suffix), "STORED")
    self.assertEqual(self.mc_cold.get(k), v + suffix)
    self.assertEqual(self.mcrouter.prepend(k, prefix), "STORED")
    self.assertEqual(self.mc_cold.get(k), prefix + v + suffix)