#!/usr/bin/perl

# This file is part of Koha.
#
# Copyright (C) 2012 BibLibre SARL
# Copyright (C) 2013 Equinox Software, Inc.
#
# Koha 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 3 of the License, or
# (at your option) any later version.
#
# Koha 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 Koha; if not, see <http://www.gnu.org/licenses>.

use Modern::Perl;
use Test::More tests => 8;
use C4::Context;

# Start transaction
my $dbh = C4::Context->dbh;
$dbh->{RaiseError} = 1;
$dbh->{AutoCommit} = 0;

my $opacheader    = C4::Context->preference('opacheader');
my $newopacheader = "newopacheader";

C4::Context->set_preference( 'OPACHEADER', $newopacheader );
is( C4::Context->preference('opacheader'), $newopacheader, 'The pref should have been set correctly' );

C4::Context->set_preference( 'opacheader', $opacheader );
is( C4::Context->preference('OPACHEADER'), $opacheader, 'A pref name should be case insensitive');

$ENV{OVERRIDE_SYSPREF_opacheader} = 'this is an override';
C4::Context->clear_syspref_cache();
is(
    C4::Context->preference('opacheader'),
    'this is an override',
    'system preference value overridden from environment'
);

is( C4::Context->preference('IDoNotExist'), undef, 'Get a non-existent system preference should return undef');

C4::Context->set_preference( 'IDoNotExist', 'NonExistent' );
is( C4::Context->preference('IDoNotExist'), 'NonExistent', 'Test creation of non-existent system preference' );

C4::Context->set_preference('testpreference', 'abc');
C4::Context->delete_preference('testpreference');
is(C4::Context->preference('testpreference'), undef, 'deleting preferences');

C4::Context->set_preference('testpreference', 'def');
# Delete from the database, it should still be in cache
$dbh->do("DELETE FROM systempreferences WHERE variable='testpreference'");
is(C4::Context->preference('testpreference'), 'def', 'caching preferences');
C4::Context->clear_syspref_cache();
is(C4::Context->preference('testpreference'), undef, 'clearing preference cache');

$dbh->rollback;