def test_incrementVal(self):
        """
        L{MemCacheProtocol.increment} takes an optional argument C{value} which
        replaces the default value of 1 when specified.
        """
        return self._test(
            self.proto.increment(b"foo", 8), b"incr foo 8\r\n", b"4\r\n", 4)

        L{MemCacheProtocol.increment} takes an optional argument C{value} which
        replaces the default value of 1 when specified.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/test/test_memcache.py