Make the GROUP_CONCAT aggregate function not repeat values (closes #3223975)
Work on sets instead of arrays, so if the same value appears twice it's
not repeated in the concatenated output.
This patch handles the postgresql and sqlite backends, mysql is left
alone at this point (seems doable, but I don't have time or motivation
to fix and test it).
# -*- coding: utf-8 -*-
# copyright 2003-2013 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""unit tests for module cubicweb.server.sqlutils
"""
import sys
from logilab.common.testlib import TestCase, unittest_main
from cubicweb.server.sqlutils import *
from cubicweb.devtools.testlib import CubicWebTC
BASE_CONFIG = {
'db-driver' : 'Postgres',
'db-host' : 'crater',
'db-name' : 'cubicweb2_test',
'db-user' : 'toto',
'db-upassword' : 'toto',
}
class SQLAdapterMixInTC(TestCase):
def test_init(self):
o = SQLAdapterMixIn(BASE_CONFIG)
self.assertEqual(o.dbhelper.dbencoding, 'UTF-8')
def test_init_encoding(self):
config = BASE_CONFIG.copy()
config['db-encoding'] = 'ISO-8859-1'
o = SQLAdapterMixIn(config)
self.assertEqual(o.dbhelper.dbencoding, 'ISO-8859-1')
class SQLUtilsTC(CubicWebTC):
def test_group_concat(self):
req = self.request()
g = req.create_entity('CWGroup', name=u'héhé')
u = req.create_entity('CWUser', login=u'toto', upassword=u'',
in_group=g.eid)
rset = self.execute(u'Any L,GROUP_CONCAT(G) GROUPBY L WHERE X login L,'
u'X in_group G, G name GN, NOT G name IN ("users", "héhé")')
self.assertEqual([[u'admin', u'3'], [u'anon', u'2']],
rset.rows)
rset = self.execute('Any L,GROUP_CONCAT(GN) GROUPBY L WHERE X login L,'
'X in_group G, G name GN, NOT G name "users"')
self.assertEqual([[u'admin', u'managers'], [u'anon', u'guests'], [u'toto', u'héhé']],
rset.rows)
if __name__ == '__main__':
unittest_main()