oddmuse/t/lock-expiration.t

# Copyright (C) 2007  Alex Schroeder <alex@emacswiki.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the
#    Free Software Foundation, Inc.
#    59 Temple Place, Suite 330
#    Boston, MA 02111-1307 USA

require 't/test.pl';
package OddMuse;
use Test::More tests => 17;

AppendStringToFile($ConfigFile, "\$SurgeProtection = 1;\n");
$localhost = 'confusibombus';
$ENV{'REMOTE_ADDR'} = $localhost;
my $lock = $LockDir . 'visitors';
ok(! -d $lock, 'visitors lock does not exist yet');
ok(! -f $VisitorFile, 'visitors log does not exist yet');

# Don't loop forever trying to remove a lock older than
# $LockExpiration that cannot be removed (eg. if the script user was
# changed, so that the old lockfile cannot be removed by the new
# user). Locks are directories; we simulate a lock that cannot be
# removed by creating a file with the same name instead.
mkdir($TempDir);
ok(open(F, '>', $lock), "create bogus ${LockDir}visitors");
my $ts = time - 120;
utime($ts, $ts, $lock); # change mtime of the lockfile
$ts = time;
get_page('fail-to-get-lock');
my $waiting = time - $ts;
ok($waiting >= 16, "waited $waiting seconds (min. 16)");
unlink($LockDir . 'visitors');
$ts = time;
test_page(get_page('get-lock'), 'get-lock');
my $waiting = time - $ts;
ok($waiting <= 2, "waited $waiting seconds (max. 2)");

# The main lock works as intended.
RequestLockOrError();
update_page('cannot', 'create');
test_page($redirect, 'Status: 503 SERVICE UNAVAILABLE',
	  'Could not get main lock');
ReleaseLock();

my $ts = (stat($VisitorFile))[10];
ok($Now - $ts <= 3, 'visitors log recently modified');

# Create a non-essential lock and make sure the lock directory is
# created, and that it remains even if no error occurs.
RequestLockDir('visitors');
ok(-d $LockDir . 'visitors', 'visitors lock created');

update_page('Test', 'page created');
test_page($redirect, 'Status: 503 SERVICE UNAVAILABLE',
	  "create the directory $TempDir");
ok(-d $LockDir . 'visitors', 'visitors lock remained');
ok($ts == (stat($VisitorFile))[10], 'visitors log was not modified');

AppendStringToFile($ConfigFile, "\$LockExpiration = 3;\n");
test_page(update_page('Test', 'page updated'), 'page updated');
ok(! -d $LockDir . 'visitors', 'visitors lock expired');
ok($ts != (stat($VisitorFile))[10], 'visitors log was modified');