# copyright 2003-2014 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 cubicweb.devtools.testlib import CubicWebTC

from cubicweb.server.session import HOOKS_ALLOW_ALL, HOOKS_DENY_ALL

from cubicweb.server import hook

from cubicweb.predicates import is_instance

class InternalSessionTC(CubicWebTC):

    def test_dbapi_query(self):

        session = self.repo.internal_session()

        self.assertFalse(session.running_dbapi_query)

        session.close()

    def test_integrity_hooks(self):

        with self.repo.internal_session() as session:

            self.assertEqual(HOOKS_ALLOW_ALL, session.hooks_mode)

            self.assertEqual(set(('integrity', 'security')), session.disabled_hook_categories)

            self.assertEqual(set(), session.enabled_hook_categories)

            session.commit()

            self.assertEqual(HOOKS_ALLOW_ALL, session.hooks_mode)

            self.assertEqual(set(('integrity', 'security')), session.disabled_hook_categories)

            self.assertEqual(set(), session.enabled_hook_categories)

class SessionTC(CubicWebTC):

    def test_hooks_control(self):

        session = self.session

        # this test check the "old" behavior of session with automatic connection management

        # close the default cnx, we do nto want it to interfer with the test

        self.cnx.close()

        # open a dedicated one

        session.set_cnx('Some-random-cnx-unrelated-to-the-default-one')

        # go test go

        self.assertEqual(HOOKS_ALLOW_ALL, session.hooks_mode)

        self.assertEqual(set(), session.disabled_hook_categories)

        self.assertEqual(set(), session.enabled_hook_categories)

        self.assertEqual(1, len(session._cnxs))

        with session.deny_all_hooks_but('metadata'):

            self.assertEqual(HOOKS_DENY_ALL, session.hooks_mode)

            self.assertEqual(set(), session.disabled_hook_categories)

            self.assertEqual(set(('metadata',)), session.enabled_hook_categories)

            session.commit()

            self.assertEqual(HOOKS_DENY_ALL, session.hooks_mode)

            self.assertEqual(set(), session.disabled_hook_categories)

            self.assertEqual(set(('metadata',)), session.enabled_hook_categories)

            session.rollback()

            self.assertEqual(HOOKS_DENY_ALL, session.hooks_mode)

            self.assertEqual(set(), session.disabled_hook_categories)

            self.assertEqual(set(('metadata',)), session.enabled_hook_categories)

            with session.allow_all_hooks_but('integrity'):

                self.assertEqual(HOOKS_ALLOW_ALL, session.hooks_mode)

                self.assertEqual(set(('integrity',)), session.disabled_hook_categories)

                self.assertEqual(set(('metadata',)), session.enabled_hook_categories) # not changed in such case

            self.assertEqual(HOOKS_DENY_ALL, session.hooks_mode)

            self.assertEqual(set(), session.disabled_hook_categories)

            self.assertEqual(set(('metadata',)), session.enabled_hook_categories)

        # leaving context manager with no transaction running should reset the

        # transaction local storage (and associated cnxset)

        self.assertEqual({}, session._cnxs)

        self.assertEqual(None, session.cnxset)

        self.assertEqual(HOOKS_ALLOW_ALL, session.hooks_mode, session.HOOKS_ALLOW_ALL)

        self.assertEqual(set(), session.disabled_hook_categories)

        self.assertEqual(set(), session.enabled_hook_categories)

    def test_explicit_connection(self):

        with self.session.new_cnx() as cnx:

            rset = cnx.execute('Any X LIMIT 1 WHERE X is CWUser')

            self.assertEqual(1, len(rset))

            user = rset.get_entity(0, 0)

            user.cw_delete()

            cnx.rollback()

            new_user = cnx.entity_from_eid(user.eid)

            self.assertIsNotNone(new_user.login)

        self.assertFalse(cnx._open)

    def test_internal_cnx(self):

        with self.repo.internal_cnx() as cnx:

            rset = cnx.execute('Any X LIMIT 1 WHERE X is CWUser')

            self.assertEqual(1, len(rset))

            user = rset.get_entity(0, 0)

            user.cw_delete()

            cnx.rollback()

            new_user = cnx.entity_from_eid(user.eid)

            self.assertIsNotNone(new_user.login)

        self.assertFalse(cnx._open)

    def test_connection_exit(self):

        """exiting a connection should roll back the transaction, including any

        pending operations"""

        self.rollbacked = False

        class RollbackOp(hook.Operation):

            _test = self

            def rollback_event(self):

                self._test.rollbacked = True

        class RollbackHook(hook.Hook):

            __regid__ = 'rollback'

            events = ('after_update_entity',)

            __select__ = hook.Hook.__select__ & is_instance('CWGroup')

            def __call__(self):

                RollbackOp(self._cw)

        with self.temporary_appobjects(RollbackHook):

            with self.admin_access.client_cnx() as cnx:

                cnx.execute('SET G name "foo" WHERE G is CWGroup, G name "managers"')

            self.assertTrue(self.rollbacked)

if __name__ == '__main__':

    from logilab.common.testlib import unittest_main

    unittest_main()