[querier] introduce RepeatList class, used to optimize size of data returned for result set description
When rql query has no ambiguity, we used to return the same description * N
where N is the size of the result set. Returning RepeatList class avoid
that multiplication.
According to quick benchmark this improve performance for result set whose
size is ~ > 50, has very small penalty for rset < 50, and in any case improve
the size of data to be transfered over the network through pyro connection.
"""unit tests for module cubicweb.server.sqlutils
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
import sys
from logilab.common.testlib import TestCase, unittest_main
from cubicweb.server.sqlutils import *
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.assertEquals(o.dbhelper.dbencoding, 'UTF-8')
def test_init_encoding(self):
config = BASE_CONFIG.copy()
config['db-encoding'] = 'ISO-8859-1'
o = SQLAdapterMixIn(config)
self.assertEquals(o.dbhelper.dbencoding, 'ISO-8859-1')
if __name__ == '__main__':
unittest_main()