[web/facet] Use an Exists node in HasRelationFacet
The generated RQL now includes an EXISTS clause. For instance, one gets:
::
DISTINCT Any WHERE X is CWUser, EXISTS(X in_group A)
instead of:
::
DISTINCT Any WHERE X is CWUser, X in_group A
for a HasRelationFacet with ``rtype = 'in_group'``, which is more appropriate
for testing the existence of the relation.
Add a test for this facet along the way.
# copyright 2014 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/>.
from logilab.common.testlib import TestCase, unittest_main
from cubicweb.toolsutils import RQLExecuteMatcher
class RQLExecuteMatcherTests(TestCase):
def matched_query(self, text):
match = RQLExecuteMatcher.match(text)
if match is None:
return None
return match['rql_query']
def test_unknown_function_dont_match(self):
self.assertIsNone(self.matched_query('foo'))
self.assertIsNone(self.matched_query('rql('))
self.assertIsNone(self.matched_query('hell("")'))
self.assertIsNone(self.matched_query('eval("rql(\'bla\''))
def test_rql_other_parameters_dont_match(self):
self.assertIsNone(self.matched_query('rql("Any X WHERE X eid %(x)s")'))
self.assertIsNone(self.matched_query('rql("Any X WHERE X eid %(x)s", {'))
self.assertIsNone(self.matched_query('session.execute("Any X WHERE X eid %(x)s")'))
self.assertIsNone(self.matched_query('session.execute("Any X WHERE X eid %(x)s", {'))
def test_rql_function_match(self):
for func_expr in ('rql', 'session.execute'):
query = self.matched_query('%s("Any X WHERE X is ' % func_expr)
self.assertEqual(query, 'Any X WHERE X is ')
def test_offseted_rql_function_match(self):
"""check indentation is allowed"""
for func_expr in (' rql', ' session.execute'):
query = self.matched_query('%s("Any X WHERE X is ' % func_expr)
self.assertEqual(query, 'Any X WHERE X is ')
if __name__ == '__main__':
unittest_main()