view t/incrdecr.t @ 2:e28ab6bd21fa

Append/prepend commands. Introduce new storage commands "append" and "prepend" for atomic value modification. They follow generic storage commands interface as described in doc/protocol.txt: <command name> <key> <flags> <exptime> <bytes>\r\n <data block>\r\n Current implementation involves memcpy() twice to combine values on writing (i.e. full resulting value are copied), but truly atomic (and even threadsafe).
author Maxim Dounin <mdounin@mdounin.ru>
date Sun, 30 Sep 2007 04:14:57 +0400
parents 30782bb1fc04
children
line wrap: on
line source

#!/usr/bin/perl

use strict;
use Test::More tests => 13;
use FindBin qw($Bin);
use lib "$Bin/lib";
use MemcachedTest;

my $server = new_memcached();
my $sock = $server->sock;

print $sock "set num 0 0 1\r\n1\r\n";
is(scalar <$sock>, "STORED\r\n", "stored num");
mem_get_is($sock, "num", 1, "stored 1");

print $sock "incr num 1\r\n";
is(scalar <$sock>, "2\r\n", "+ 1 = 2");
mem_get_is($sock, "num", 2);

print $sock "incr num 8\r\n";
is(scalar <$sock>, "10\r\n", "+ 8 = 10");
mem_get_is($sock, "num", 10);

print $sock "decr num 1\r\n";
is(scalar <$sock>, "9\r\n", "- 1 = 9");

print $sock "decr num 9\r\n";
is(scalar <$sock>, "0\r\n", "- 9 = 0");

print $sock "decr num 5\r\n";
is(scalar <$sock>, "0\r\n", "- 5 = 0");

print $sock "decr bogus 5\r\n";
is(scalar <$sock>, "NOT_FOUND\r\n", "can't decr bogus key");

print $sock "decr incr 5\r\n";
is(scalar <$sock>, "NOT_FOUND\r\n", "can't incr bogus key");

print $sock "set text 0 0 2\r\nhi\r\n";
is(scalar <$sock>, "STORED\r\n", "stored text");
print $sock "incr text 1\r\n";
is(scalar <$sock>, "1\r\n", "hi - 1 = 0");