add a new method iter_process_result which does the same as proces_result but is a generator (closes #1625374)
process_result is reimplemented using the new method, and the two helper
methods are turned into generators.
These generators use cursor.fetchmany instead of cursor.fetchall after setting
cursor.arraysize to 100. This means that the whole result set should never
loaded in memory when using the iter_process_result method. This is used in the
"portable" database dump implementation when we typically to 'SELECT * FROM
table', but could probably be used too in other parts of cubicweb.
# copyright 2003-2010 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/>.
"""unittest for cubicweb.dbapi"""
from __future__ import with_statement
from copy import copy
from logilab.common import tempattr
from cubicweb import ConnectionError, cwconfig
from cubicweb.dbapi import ProgrammingError
from cubicweb.devtools.testlib import CubicWebTC
class DBAPITC(CubicWebTC):
def test_public_repo_api(self):
cnx = self.login('anon')
self.assertEqual(cnx.get_schema(), self.repo.schema)
self.assertEqual(cnx.source_defs(), {'system': {'type': 'native', 'uri': 'system'}})
self.restore_connection() # proper way to close cnx
self.assertRaises(ProgrammingError, cnx.get_schema)
self.assertRaises(ProgrammingError, cnx.source_defs)
def test_db_api(self):
cnx = self.login('anon')
self.assertEqual(cnx.rollback(), None)
self.assertEqual(cnx.commit(), None)
self.restore_connection() # proper way to close cnx
#self.assertEqual(cnx.close(), None)
self.assertRaises(ProgrammingError, cnx.rollback)
self.assertRaises(ProgrammingError, cnx.commit)
self.assertRaises(ProgrammingError, cnx.close)
def test_api(self):
cnx = self.login('anon')
self.assertEqual(cnx.user(None).login, 'anon')
self.assertEqual(cnx.describe(1), (u'CWSource', u'system', None))
self.restore_connection() # proper way to close cnx
self.assertRaises(ProgrammingError, cnx.user, None)
self.assertRaises(ProgrammingError, cnx.describe, 1)
def test_shared_data_api(self):
cnx = self.login('anon')
self.assertEqual(cnx.get_shared_data('data'), None)
cnx.set_shared_data('data', 4)
self.assertEqual(cnx.get_shared_data('data'), 4)
cnx.get_shared_data('data', pop=True)
cnx.get_shared_data('whatever', pop=True)
self.assertEqual(cnx.get_shared_data('data'), None)
cnx.set_shared_data('data', 4)
self.assertEqual(cnx.get_shared_data('data'), 4)
self.restore_connection() # proper way to close cnx
self.assertRaises(ProgrammingError, cnx.check)
self.assertRaises(ProgrammingError, cnx.set_shared_data, 'data', 0)
self.assertRaises(ProgrammingError, cnx.get_shared_data, 'data')
def test_web_compatible_request(self):
config = cwconfig.CubicWebNoAppConfiguration()
with tempattr(self.cnx.vreg, 'config', config):
self.cnx.use_web_compatible_requests('http://perdu.com')
req = self.cnx.request()
self.assertEqual(req.base_url(), 'http://perdu.com')
self.assertEqual(req.from_controller(), 'view')
self.assertEqual(req.relative_path(), '')
req.ajax_replace_url('domid') # don't crash
req.user.cw_adapt_to('IBreadCrumbs') # don't crash
if __name__ == '__main__':
from logilab.common.testlib import unittest_main
unittest_main()