server/test/unittest_migractions.py
author Julien Cristau <julien.cristau@logilab.fr>
Thu, 12 Dec 2013 14:25:24 +0100
changeset 9360 eda5071e30a1
parent 9299 c5eed908117d
child 9395 96dba2efd16d
permissions -rw-r--r--
[migration] fix handling of default value for boolean attributes We can't assert that the old value is 'True' or 'False', because False used to be stored as an empty string in pre-3.18 versions.

# 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.migractions"""

from datetime import date
from os.path import join

from logilab.common.testlib import TestCase, unittest_main, Tags, tag

from yams.constraints import UniqueConstraint

from cubicweb import ConfigurationError, ValidationError
from cubicweb.devtools.testlib import CubicWebTC
from cubicweb.schema import CubicWebSchemaLoader
from cubicweb.server.sqlutils import SQL_PREFIX
from cubicweb.server.migractions import *

import cubicweb.devtools

migrschema = None
def tearDownModule(*args):
    global migrschema
    del migrschema
    if hasattr(MigrationCommandsTC, 'origschema'):
        del MigrationCommandsTC.origschema

class MigrationCommandsTC(CubicWebTC):

    configcls = cubicweb.devtools.TestServerConfiguration

    tags = CubicWebTC.tags | Tags(('server', 'migration', 'migractions'))

    @classmethod
    def _init_repo(cls):
        super(MigrationCommandsTC, cls)._init_repo()
        # we have to read schema from the database to get eid for schema entities
        cls.repo.set_schema(cls.repo.deserialize_schema(), resetvreg=False)
        # hack to read the schema from data/migrschema
        config = cls.config
        config.appid = join('data', 'migratedapp')
        config._apphome = cls.datapath('migratedapp')
        global migrschema
        migrschema = config.load_schema()
        config.appid = 'data'
        config._apphome = cls.datadir
        assert 'Folder' in migrschema

    def setUp(self):
        CubicWebTC.setUp(self)
        self.mh = ServerMigrationHelper(self.repo.config, migrschema,
                                        repo=self.repo, cnx=self.cnx,
                                        interactive=False)
        assert self.cnx is self.mh._cnx
        assert self.session is self.mh.session, (self.session.id, self.mh.session.id)

    def tearDown(self):
        CubicWebTC.tearDown(self)
        self.repo.vreg['etypes'].clear_caches()

    def test_add_attribute_bool(self):
        self.assertFalse('yesno' in self.schema)
        self.session.create_entity('Note')
        self.commit()
        self.mh.cmd_add_attribute('Note', 'yesno')
        self.assertTrue('yesno' in self.schema)
        self.assertEqual(self.schema['yesno'].subjects(), ('Note',))
        self.assertEqual(self.schema['yesno'].objects(), ('Boolean',))
        self.assertEqual(self.schema['Note'].default('yesno'), False)
        # test default value set on existing entities
        note = self.session.execute('Note X').get_entity(0, 0)
        self.assertEqual(note.yesno, False)
        # test default value set for next entities
        self.assertEqual(self.session.create_entity('Note').yesno, False)
        self.mh.rollback()

    def test_add_attribute_int(self):
        self.assertFalse('whatever' in self.schema)
        self.session.create_entity('Note')
        self.session.commit(free_cnxset=False)
        orderdict = dict(self.mh.rqlexec('Any RTN, O WHERE X name "Note", RDEF from_entity X, '
                                         'RDEF relation_type RT, RDEF ordernum O, RT name RTN'))
        self.mh.cmd_add_attribute('Note', 'whatever')
        self.assertTrue('whatever' in self.schema)
        self.assertEqual(self.schema['whatever'].subjects(), ('Note',))
        self.assertEqual(self.schema['whatever'].objects(), ('Int',))
        self.assertEqual(self.schema['Note'].default('whatever'), 0)
        # test default value set on existing entities
        note = self.session.execute('Note X').get_entity(0, 0)
        self.assertIsInstance(note.whatever, int)
        self.assertEqual(note.whatever, 0)
        # test default value set for next entities
        self.assertEqual(self.session.create_entity('Note').whatever, 0)
        # test attribute order
        orderdict2 = dict(self.mh.rqlexec('Any RTN, O WHERE X name "Note", RDEF from_entity X, '
                                          'RDEF relation_type RT, RDEF ordernum O, RT name RTN'))
        whateverorder = migrschema['whatever'].rdef('Note', 'Int').order
        for k, v in orderdict.iteritems():
            if v >= whateverorder:
                orderdict[k] = v+1
        orderdict['whatever'] = whateverorder
        self.assertDictEqual(orderdict, orderdict2)
        #self.assertEqual([r.type for r in self.schema['Note'].ordered_relations()],
        #                  ['modification_date', 'creation_date', 'owned_by',
        #                   'eid', 'ecrit_par', 'inline1', 'date', 'type',
        #                   'whatever', 'date', 'in_basket'])
        # NB: commit instead of rollback make following test fail with py2.5
        #     this sounds like a pysqlite/2.5 bug (the same eid is affected to
        #     two different entities)
        self.mh.rollback()

    def test_add_attribute_varchar(self):
        self.assertFalse('whatever' in self.schema)
        self.session.create_entity('Note')
        self.session.commit(free_cnxset=False)
        self.assertFalse('shortpara' in self.schema)
        self.mh.cmd_add_attribute('Note', 'shortpara')
        self.assertTrue('shortpara' in self.schema)
        self.assertEqual(self.schema['shortpara'].subjects(), ('Note', ))
        self.assertEqual(self.schema['shortpara'].objects(), ('String', ))
        # test created column is actually a varchar(64)
        notesql = self.mh.sqlexec("SELECT sql FROM sqlite_master WHERE type='table' and name='%sNote'" % SQL_PREFIX)[0][0]
        fields = dict(x.strip().split()[:2] for x in notesql.split('(', 1)[1].rsplit(')', 1)[0].split(','))
        self.assertEqual(fields['%sshortpara' % SQL_PREFIX], 'varchar(64)')
        # test default value set on existing entities
        self.assertEqual(self.session.execute('Note X').get_entity(0, 0).shortpara, 'hop')
        # test default value set for next entities
        self.assertEqual(self.session.create_entity('Note').shortpara, 'hop')
        self.mh.rollback()

    def test_add_datetime_with_default_value_attribute(self):
        self.assertFalse('mydate' in self.schema)
        self.assertFalse('oldstyledefaultdate' in self.schema)
        self.assertFalse('newstyledefaultdate' in self.schema)
        self.mh.cmd_add_attribute('Note', 'mydate')
        self.mh.cmd_add_attribute('Note', 'oldstyledefaultdate')
        self.mh.cmd_add_attribute('Note', 'newstyledefaultdate')
        self.assertTrue('mydate' in self.schema)
        self.assertTrue('oldstyledefaultdate' in self.schema)
        self.assertTrue('newstyledefaultdate' in self.schema)
        self.assertEqual(self.schema['mydate'].subjects(), ('Note', ))
        self.assertEqual(self.schema['mydate'].objects(), ('Date', ))
        testdate = date(2005, 12, 13)
        eid1 = self.mh.rqlexec('INSERT Note N')[0][0]
        eid2 = self.mh.rqlexec('INSERT Note N: N mydate %(mydate)s', {'mydate' : testdate})[0][0]
        d1 = self.mh.rqlexec('Any D WHERE X eid %(x)s, X mydate D', {'x': eid1})[0][0]
        d2 = self.mh.rqlexec('Any D WHERE X eid %(x)s, X mydate D', {'x': eid2})[0][0]
        d3 = self.mh.rqlexec('Any D WHERE X eid %(x)s, X oldstyledefaultdate D', {'x': eid1})[0][0]
        d4 = self.mh.rqlexec('Any D WHERE X eid %(x)s, X newstyledefaultdate D', {'x': eid1})[0][0]
        self.assertEqual(d1, date.today())
        self.assertEqual(d2, testdate)
        myfavoritedate = date(2013, 1, 1)
        self.assertEqual(d3, myfavoritedate)
        self.assertEqual(d4, myfavoritedate)
        self.mh.rollback()

    def test_drop_chosen_constraints_ctxmanager(self):
        with self.mh.cmd_dropped_constraints('Note', 'unique_id', UniqueConstraint):
            self.mh.cmd_add_attribute('Note', 'unique_id')
            # make sure the maxsize constraint is not dropped
            self.assertRaises(ValidationError,
                              self.mh.rqlexec,
                              'INSERT Note N: N unique_id "xyz"')
            self.mh.rollback()
            # make sure the unique constraint is dropped
            self.mh.rqlexec('INSERT Note N: N unique_id "x"')
            self.mh.rqlexec('INSERT Note N: N unique_id "x"')
            self.mh.rqlexec('DELETE Note N')
        self.mh.rollback()

    def test_drop_required_ctxmanager(self):
        with self.mh.cmd_dropped_constraints('Note', 'unique_id', cstrtype=None,
                                             droprequired=True):
            self.mh.cmd_add_attribute('Note', 'unique_id')
            self.mh.rqlexec('INSERT Note N')
        # make sure the required=True was restored
        self.assertRaises(ValidationError, self.mh.rqlexec, 'INSERT Note N')
        self.mh.rollback()

    def test_rename_attribute(self):
        self.assertFalse('civility' in self.schema)
        eid1 = self.mh.rqlexec('INSERT Personne X: X nom "lui", X sexe "M"')[0][0]
        eid2 = self.mh.rqlexec('INSERT Personne X: X nom "l\'autre", X sexe NULL')[0][0]
        self.mh.cmd_rename_attribute('Personne', 'sexe', 'civility')
        self.assertFalse('sexe' in self.schema)
        self.assertTrue('civility' in self.schema)
        # test data has been backported
        c1 = self.mh.rqlexec('Any C WHERE X eid %s, X civility C' % eid1)[0][0]
        self.assertEqual(c1, 'M')
        c2 = self.mh.rqlexec('Any C WHERE X eid %s, X civility C' % eid2)[0][0]
        self.assertEqual(c2, None)


    def test_workflow_actions(self):
        wf = self.mh.cmd_add_workflow(u'foo', ('Personne', 'Email'),
                                      ensure_workflowable=False)
        for etype in ('Personne', 'Email'):
            s1 = self.mh.rqlexec('Any N WHERE WF workflow_of ET, ET name "%s", WF name N' %
                                 etype)[0][0]
            self.assertEqual(s1, "foo")
            s1 = self.mh.rqlexec('Any N WHERE ET default_workflow WF, ET name "%s", WF name N' %
                                 etype)[0][0]
            self.assertEqual(s1, "foo")

    def test_add_entity_type(self):
        self.assertFalse('Folder2' in self.schema)
        self.assertFalse('filed_under2' in self.schema)
        self.mh.cmd_add_entity_type('Folder2')
        self.assertTrue('Folder2' in self.schema)
        self.assertTrue('Old' in self.schema)
        self.assertTrue(self.session.execute('CWEType X WHERE X name "Folder2"'))
        self.assertTrue('filed_under2' in self.schema)
        self.assertTrue(self.session.execute('CWRType X WHERE X name "filed_under2"'))
        self.schema.rebuild_infered_relations()
        self.assertEqual(sorted(str(rs) for rs in self.schema['Folder2'].subject_relations()),
                          ['created_by', 'creation_date', 'cw_source', 'cwuri',
                           'description', 'description_format',
                           'eid',
                           'filed_under2', 'has_text',
                           'identity', 'in_basket', 'is', 'is_instance_of',
                           'modification_date', 'name', 'owned_by'])
        self.assertEqual([str(rs) for rs in self.schema['Folder2'].object_relations()],
                          ['filed_under2', 'identity'])
        # Old will be missing as it has been renamed into 'New' in the migrated
        # schema while New hasn't been added here.
        self.assertEqual(sorted(str(e) for e in self.schema['filed_under2'].subjects()),
                         sorted(str(e) for e in self.schema.entities() if not e.final and e != 'Old'))
        self.assertEqual(self.schema['filed_under2'].objects(), ('Folder2',))
        eschema = self.schema.eschema('Folder2')
        for cstr in eschema.rdef('name').constraints:
            self.assertTrue(hasattr(cstr, 'eid'))

    def test_add_drop_entity_type(self):
        self.mh.cmd_add_entity_type('Folder2')
        wf = self.mh.cmd_add_workflow(u'folder2 wf', 'Folder2',
                                      ensure_workflowable=False)
        todo = wf.add_state(u'todo', initial=True)
        done = wf.add_state(u'done')
        wf.add_transition(u'redoit', done, todo)
        wf.add_transition(u'markasdone', todo, done)
        self.session.commit(free_cnxset=False)
        eschema = self.schema.eschema('Folder2')
        self.mh.cmd_drop_entity_type('Folder2')
        self.assertFalse('Folder2' in self.schema)
        self.assertFalse(self.session.execute('CWEType X WHERE X name "Folder2"'))
        # test automatic workflow deletion
        self.assertFalse(self.session.execute('Workflow X WHERE NOT X workflow_of ET'))
        self.assertFalse(self.session.execute('State X WHERE NOT X state_of WF'))
        self.assertFalse(self.session.execute('Transition X WHERE NOT X transition_of WF'))

    def test_rename_entity_type(self):
        entity = self.mh.create_entity('Old', name=u'old')
        self.repo.type_and_source_from_eid(entity.eid)
        self.mh.cmd_rename_entity_type('Old', 'New')
        self.mh.cmd_rename_attribute('New', 'name', 'new_name')

    def test_add_drop_relation_type(self):
        self.mh.cmd_add_entity_type('Folder2', auto=False)
        self.mh.cmd_add_relation_type('filed_under2')
        self.schema.rebuild_infered_relations()
        self.assertTrue('filed_under2' in self.schema)
        # Old will be missing as it has been renamed into 'New' in the migrated
        # schema while New hasn't been added here.
        self.assertEqual(sorted(str(e) for e in self.schema['filed_under2'].subjects()),
                         sorted(str(e) for e in self.schema.entities()
                                if not e.final and e != 'Old'))
        self.assertEqual(self.schema['filed_under2'].objects(), ('Folder2',))
        self.mh.cmd_drop_relation_type('filed_under2')
        self.assertFalse('filed_under2' in self.schema)

    def test_add_relation_definition_nortype(self):
        self.mh.cmd_add_relation_definition('Personne', 'concerne2', 'Affaire')
        self.assertEqual(self.schema['concerne2'].subjects(),
                          ('Personne',))
        self.assertEqual(self.schema['concerne2'].objects(),
                          ('Affaire', ))
        self.assertEqual(self.schema['concerne2'].rdef('Personne', 'Affaire').cardinality,
                          '1*')
        self.mh.cmd_add_relation_definition('Personne', 'concerne2', 'Note')
        self.assertEqual(sorted(self.schema['concerne2'].objects()), ['Affaire', 'Note'])
        self.mh.create_entity('Personne', nom=u'tot')
        self.mh.create_entity('Affaire')
        self.mh.rqlexec('SET X concerne2 Y WHERE X is Personne, Y is Affaire')
        self.session.commit(free_cnxset=False)
        self.mh.cmd_drop_relation_definition('Personne', 'concerne2', 'Affaire')
        self.assertTrue('concerne2' in self.schema)
        self.mh.cmd_drop_relation_definition('Personne', 'concerne2', 'Note')
        self.assertFalse('concerne2' in self.schema)

    def test_drop_relation_definition_existant_rtype(self):
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].subjects()),
                          ['Affaire', 'Personne'])
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].objects()),
                          ['Affaire', 'Division', 'Note', 'Societe', 'SubDivision'])
        self.mh.cmd_drop_relation_definition('Personne', 'concerne', 'Affaire')
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].subjects()),
                          ['Affaire'])
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].objects()),
                          ['Division', 'Note', 'Societe', 'SubDivision'])
        self.mh.cmd_add_relation_definition('Personne', 'concerne', 'Affaire')
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].subjects()),
                          ['Affaire', 'Personne'])
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].objects()),
                          ['Affaire', 'Division', 'Note', 'Societe', 'SubDivision'])
        # trick: overwrite self.maxeid to avoid deletion of just reintroduced types
        self.maxeid = self.session.execute('Any MAX(X)')[0][0]

    def test_drop_relation_definition_with_specialization(self):
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].subjects()),
                          ['Affaire', 'Personne'])
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].objects()),
                          ['Affaire', 'Division', 'Note', 'Societe', 'SubDivision'])
        self.mh.cmd_drop_relation_definition('Affaire', 'concerne', 'Societe')
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].subjects()),
                          ['Affaire', 'Personne'])
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].objects()),
                          ['Affaire', 'Division', 'Note', 'SubDivision'])
        self.schema.rebuild_infered_relations() # need to be explicitly called once everything is in place
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].objects()),
                          ['Affaire', 'Note'])
        self.mh.cmd_add_relation_definition('Affaire', 'concerne', 'Societe')
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].subjects()),
                          ['Affaire', 'Personne'])
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].objects()),
                          ['Affaire', 'Note', 'Societe'])
        self.schema.rebuild_infered_relations() # need to be explicitly called once everything is in place
        self.assertEqual(sorted(str(e) for e in self.schema['concerne'].objects()),
                          ['Affaire', 'Division', 'Note', 'Societe', 'SubDivision'])
        # trick: overwrite self.maxeid to avoid deletion of just reintroduced types
        self.maxeid = self.session.execute('Any MAX(X)')[0][0]

    def test_rename_relation(self):
        self.skipTest('implement me')

    def test_change_relation_props_non_final(self):
        rschema = self.schema['concerne']
        card = rschema.rdef('Affaire', 'Societe').cardinality
        self.assertEqual(card, '**')
        try:
            self.mh.cmd_change_relation_props('Affaire', 'concerne', 'Societe',
                                              cardinality='?*')
            card = rschema.rdef('Affaire', 'Societe').cardinality
            self.assertEqual(card, '?*')
        finally:
            self.mh.cmd_change_relation_props('Affaire', 'concerne', 'Societe',
                                              cardinality='**')

    def test_change_relation_props_final(self):
        rschema = self.schema['adel']
        card = rschema.rdef('Personne', 'String').fulltextindexed
        self.assertEqual(card, False)
        try:
            self.mh.cmd_change_relation_props('Personne', 'adel', 'String',
                                              fulltextindexed=True)
            card = rschema.rdef('Personne', 'String').fulltextindexed
            self.assertEqual(card, True)
        finally:
            self.mh.cmd_change_relation_props('Personne', 'adel', 'String',
                                              fulltextindexed=False)

    @tag('longrun')
    def test_sync_schema_props_perms(self):
        cursor = self.mh.session
        cursor.set_cnxset()
        nbrqlexpr_start = cursor.execute('Any COUNT(X) WHERE X is RQLExpression')[0][0]
        migrschema['titre'].rdefs[('Personne', 'String')].order = 7
        migrschema['adel'].rdefs[('Personne', 'String')].order = 6
        migrschema['ass'].rdefs[('Personne', 'String')].order = 5
        migrschema['Personne'].description = 'blabla bla'
        migrschema['titre'].description = 'usually a title'
        migrschema['titre'].rdefs[('Personne', 'String')].description = 'title for this person'
        delete_concerne_rqlexpr = self._rrqlexpr_rset('delete', 'concerne')
        add_concerne_rqlexpr = self._rrqlexpr_rset('add', 'concerne')

        self.mh.cmd_sync_schema_props_perms(commit=False)

        self.assertEqual(cursor.execute('Any D WHERE X name "Personne", X description D')[0][0],
                          'blabla bla')
        self.assertEqual(cursor.execute('Any D WHERE X name "titre", X description D')[0][0],
                          'usually a title')
        self.assertEqual(cursor.execute('Any D WHERE X relation_type RT, RT name "titre",'
                                         'X from_entity FE, FE name "Personne",'
                                         'X description D')[0][0],
                          'title for this person')
        rinorder = [n for n, in cursor.execute(
            'Any N ORDERBY O,N WHERE X is CWAttribute, X relation_type RT, RT name N,'
            'X from_entity FE, FE name "Personne",'
            'X ordernum O')]
        expected = [u'nom', u'prenom', u'sexe', u'promo', u'ass', u'adel', u'titre',
                    u'web', u'tel', u'fax', u'datenaiss', u'test', u'tzdatenaiss',
                    u'description', u'firstname',
                    u'creation_date', u'cwuri', u'modification_date']
        self.assertEqual(expected, rinorder)

        # test permissions synchronization ####################################
        # new rql expr to add note entity
        eexpr = self._erqlexpr_entity('add', 'Note')
        self.assertEqual(eexpr.expression,
                          'X ecrit_part PE, U in_group G, '
                          'PE require_permission P, P name "add_note", P require_group G')
        self.assertEqual([et.name for et in eexpr.reverse_add_permission], ['Note'])
        self.assertEqual(eexpr.reverse_read_permission, ())
        self.assertEqual(eexpr.reverse_delete_permission, ())
        self.assertEqual(eexpr.reverse_update_permission, ())
        # no more rqlexpr to delete and add para attribute
        self.assertFalse(self._rrqlexpr_rset('add', 'para'))
        self.assertFalse(self._rrqlexpr_rset('delete', 'para'))
        # new rql expr to add ecrit_par relation
        rexpr = self._rrqlexpr_entity('add', 'ecrit_par')
        self.assertEqual(rexpr.expression,
                          'O require_permission P, P name "add_note", '
                          'U in_group G, P require_group G')
        self.assertEqual([rdef.rtype.name for rdef in rexpr.reverse_add_permission], ['ecrit_par'])
        self.assertEqual(rexpr.reverse_read_permission, ())
        self.assertEqual(rexpr.reverse_delete_permission, ())
        # no more rqlexpr to delete and add travaille relation
        self.assertFalse(self._rrqlexpr_rset('add', 'travaille'))
        self.assertFalse(self._rrqlexpr_rset('delete', 'travaille'))
        # no more rqlexpr to delete and update Societe entity
        self.assertFalse(self._erqlexpr_rset('update', 'Societe'))
        self.assertFalse(self._erqlexpr_rset('delete', 'Societe'))
        # no more rqlexpr to read Affaire entity
        self.assertFalse(self._erqlexpr_rset('read', 'Affaire'))
        # rqlexpr to update Affaire entity has been updated
        eexpr = self._erqlexpr_entity('update', 'Affaire')
        self.assertEqual(eexpr.expression, 'X concerne S, S owned_by U')
        # no change for rqlexpr to add and delete Affaire entity
        self.assertEqual(len(self._erqlexpr_rset('delete', 'Affaire')), 1)
        self.assertEqual(len(self._erqlexpr_rset('add', 'Affaire')), 1)
        # no change for rqlexpr to add and delete concerne relation
        self.assertEqual(len(self._rrqlexpr_rset('delete', 'concerne')), len(delete_concerne_rqlexpr))
        self.assertEqual(len(self._rrqlexpr_rset('add', 'concerne')), len(add_concerne_rqlexpr))
        # * migrschema involve:
        #   * 7 rqlexprs deletion (2 in (Affaire read + Societe + travaille) + 1
        #     in para attribute)
        #   * 1 update (Affaire update)
        #   * 2 new (Note add, ecrit_par add)
        #   * 2 implicit new for attributes update_permission (Note.para, Personne.test)
        # remaining orphan rql expr which should be deleted at commit (composite relation)
        self.assertEqual(cursor.execute('Any COUNT(X) WHERE X is RQLExpression, '
                                         'NOT ET1 read_permission X, NOT ET2 add_permission X, '
                                         'NOT ET3 delete_permission X, NOT ET4 update_permission X')[0][0],
                          7+1)
        # finally
        self.assertEqual(cursor.execute('Any COUNT(X) WHERE X is RQLExpression')[0][0],
                          nbrqlexpr_start + 1 + 2 + 2)
        self.mh.commit()
        # unique_together test
        self.assertEqual(len(self.schema.eschema('Personne')._unique_together), 1)
        self.assertCountEqual(self.schema.eschema('Personne')._unique_together[0],
                                           ('nom', 'prenom', 'datenaiss'))
        rset = cursor.execute('Any C WHERE C is CWUniqueTogetherConstraint, C constraint_of ET, ET name "Personne"')
        self.assertEqual(len(rset), 1)
        relations = [r.name for r in rset.get_entity(0, 0).relations]
        self.assertCountEqual(relations, ('nom', 'prenom', 'datenaiss'))

    def _erqlexpr_rset(self, action, ertype):
        rql = 'RQLExpression X WHERE ET is CWEType, ET %s_permission X, ET name %%(name)s' % action
        return self.mh.session.execute(rql, {'name': ertype})
    def _erqlexpr_entity(self, action, ertype):
        rset = self._erqlexpr_rset(action, ertype)
        self.assertEqual(len(rset), 1)
        return rset.get_entity(0, 0)
    def _rrqlexpr_rset(self, action, ertype):
        rql = 'RQLExpression X WHERE RT is CWRType, RDEF %s_permission X, RT name %%(name)s, RDEF relation_type RT' % action
        return self.mh.session.execute(rql, {'name': ertype})
    def _rrqlexpr_entity(self, action, ertype):
        rset = self._rrqlexpr_rset(action, ertype)
        self.assertEqual(len(rset), 1)
        return rset.get_entity(0, 0)

    def test_set_size_constraint(self):
        # existing previous value
        try:
            self.mh.cmd_set_size_constraint('CWEType', 'name', 128)
        finally:
            self.mh.cmd_set_size_constraint('CWEType', 'name', 64)
        # non existing previous value
        try:
            self.mh.cmd_set_size_constraint('CWEType', 'description', 256)
        finally:
            self.mh.cmd_set_size_constraint('CWEType', 'description', None)

    @tag('longrun')
    def test_add_remove_cube_and_deps(self):
        cubes = set(self.config.cubes())
        schema = self.repo.schema
        self.assertEqual(sorted((str(s), str(o)) for s, o in schema['see_also'].rdefs.iterkeys()),
                          sorted([('EmailThread', 'EmailThread'), ('Folder', 'Folder'),
                                  ('Bookmark', 'Bookmark'), ('Bookmark', 'Note'),
                                  ('Note', 'Note'), ('Note', 'Bookmark')]))
        try:
            try:
                self.mh.cmd_remove_cube('email', removedeps=True)
                # file was there because it's an email dependancy, should have been removed
                self.assertFalse('email' in self.config.cubes())
                self.assertFalse(self.config.cube_dir('email') in self.config.cubes_path())
                self.assertFalse('file' in self.config.cubes())
                self.assertFalse(self.config.cube_dir('file') in self.config.cubes_path())
                for ertype in ('Email', 'EmailThread', 'EmailPart', 'File',
                               'sender', 'in_thread', 'reply_to', 'data_format'):
                    self.assertFalse(ertype in schema, ertype)
                self.assertEqual(sorted(schema['see_also'].rdefs.iterkeys()),
                                  sorted([('Folder', 'Folder'),
                                          ('Bookmark', 'Bookmark'),
                                          ('Bookmark', 'Note'),
                                          ('Note', 'Note'),
                                          ('Note', 'Bookmark')]))
                self.assertEqual(sorted(schema['see_also'].subjects()), ['Bookmark', 'Folder', 'Note'])
                self.assertEqual(sorted(schema['see_also'].objects()), ['Bookmark', 'Folder', 'Note'])
                self.assertEqual(self.session.execute('Any X WHERE X pkey "system.version.email"').rowcount, 0)
                self.assertEqual(self.session.execute('Any X WHERE X pkey "system.version.file"').rowcount, 0)
            except :
                import traceback
                traceback.print_exc()
                raise
        finally:
            self.mh.cmd_add_cube('email')
            self.assertTrue('email' in self.config.cubes())
            self.assertTrue(self.config.cube_dir('email') in self.config.cubes_path())
            self.assertTrue('file' in self.config.cubes())
            self.assertTrue(self.config.cube_dir('file') in self.config.cubes_path())
            for ertype in ('Email', 'EmailThread', 'EmailPart', 'File',
                           'sender', 'in_thread', 'reply_to', 'data_format'):
                self.assertTrue(ertype in schema, ertype)
            self.assertEqual(sorted(schema['see_also'].rdefs.iterkeys()),
                              sorted([('EmailThread', 'EmailThread'), ('Folder', 'Folder'),
                                      ('Bookmark', 'Bookmark'),
                                      ('Bookmark', 'Note'),
                                      ('Note', 'Note'),
                                      ('Note', 'Bookmark')]))
            self.assertEqual(sorted(schema['see_also'].subjects()), ['Bookmark', 'EmailThread', 'Folder', 'Note'])
            self.assertEqual(sorted(schema['see_also'].objects()), ['Bookmark', 'EmailThread', 'Folder', 'Note'])
            from cubes.email.__pkginfo__ import version as email_version
            from cubes.file.__pkginfo__ import version as file_version
            self.assertEqual(self.session.execute('Any V WHERE X value V, X pkey "system.version.email"')[0][0],
                              email_version)
            self.assertEqual(self.session.execute('Any V WHERE X value V, X pkey "system.version.file"')[0][0],
                              file_version)
            # trick: overwrite self.maxeid to avoid deletion of just reintroduced
            #        types (and their associated tables!)
            self.maxeid = self.session.execute('Any MAX(X)')[0][0]
            # why this commit is necessary is unclear to me (though without it
            # next test may fail complaining of missing tables
            self.session.commit(free_cnxset=False)


    @tag('longrun')
    def test_add_remove_cube_no_deps(self):
        cubes = set(self.config.cubes())
        schema = self.repo.schema
        try:
            try:
                self.mh.cmd_remove_cube('email')
                cubes.remove('email')
                self.assertFalse('email' in self.config.cubes())
                self.assertTrue('file' in self.config.cubes())
                for ertype in ('Email', 'EmailThread', 'EmailPart',
                               'sender', 'in_thread', 'reply_to'):
                    self.assertFalse(ertype in schema, ertype)
            except :
                import traceback
                traceback.print_exc()
                raise
        finally:
            self.mh.cmd_add_cube('email')
            self.assertTrue('email' in self.config.cubes())
            # trick: overwrite self.maxeid to avoid deletion of just reintroduced
            #        types (and their associated tables!)
            self.maxeid = self.session.execute('Any MAX(X)')[0][0]
            # why this commit is necessary is unclear to me (though without it
            # next test may fail complaining of missing tables
            self.session.commit(free_cnxset=False)

    def test_remove_dep_cube(self):
        with self.assertRaises(ConfigurationError) as cm:
            self.mh.cmd_remove_cube('file')
        self.assertEqual(str(cm.exception), "can't remove cube file, used as a dependency")

    @tag('longrun')
    def test_introduce_base_class(self):
        self.mh.cmd_add_entity_type('Para')
        self.mh.repo.schema.rebuild_infered_relations()
        self.assertEqual(sorted(et.type for et in self.schema['Para'].specialized_by()),
                          ['Note'])
        self.assertEqual(self.schema['Note'].specializes().type, 'Para')
        self.mh.cmd_add_entity_type('Text')
        self.mh.repo.schema.rebuild_infered_relations()
        self.assertEqual(sorted(et.type for et in self.schema['Para'].specialized_by()),
                          ['Note', 'Text'])
        self.assertEqual(self.schema['Text'].specializes().type, 'Para')
        # test columns have been actually added
        text = self.session.execute('INSERT Text X: X para "hip", X summary "hop", X newattr "momo"').get_entity(0, 0)
        note = self.session.execute('INSERT Note X: X para "hip", X shortpara "hop", X newattr "momo", X unique_id "x"').get_entity(0, 0)
        aff = self.session.execute('INSERT Affaire X').get_entity(0, 0)
        self.assertTrue(self.session.execute('SET X newnotinlined Y WHERE X eid %(x)s, Y eid %(y)s',
                                     {'x': text.eid, 'y': aff.eid}))
        self.assertTrue(self.session.execute('SET X newnotinlined Y WHERE X eid %(x)s, Y eid %(y)s',
                                     {'x': note.eid, 'y': aff.eid}))
        self.assertTrue(self.session.execute('SET X newinlined Y WHERE X eid %(x)s, Y eid %(y)s',
                                     {'x': text.eid, 'y': aff.eid}))
        self.assertTrue(self.session.execute('SET X newinlined Y WHERE X eid %(x)s, Y eid %(y)s',
                                     {'x': note.eid, 'y': aff.eid}))
        # XXX remove specializes by ourselves, else tearDown fails when removing
        # Para because of Note inheritance. This could be fixed by putting the
        # MemSchemaCWETypeDel(session, name) operation in the
        # after_delete_entity(CWEType) hook, since in that case the MemSchemaSpecializesDel
        # operation would be removed before, but I'm not sure this is a desired behaviour.
        #
        # also we need more tests about introducing/removing base classes or
        # specialization relationship...
        self.session.data['rebuild-infered'] = True
        try:
            self.session.execute('DELETE X specializes Y WHERE Y name "Para"')
            self.session.commit(free_cnxset=False)
        finally:
            self.session.data['rebuild-infered'] = False
        self.assertEqual(sorted(et.type for et in self.schema['Para'].specialized_by()),
                          [])
        self.assertEqual(self.schema['Note'].specializes(), None)
        self.assertEqual(self.schema['Text'].specializes(), None)


    def test_add_symmetric_relation_type(self):
        same_as_sql = self.mh.sqlexec("SELECT sql FROM sqlite_master WHERE type='table' "
                                      "and name='same_as_relation'")
        self.assertFalse(same_as_sql)
        self.mh.cmd_add_relation_type('same_as')
        same_as_sql = self.mh.sqlexec("SELECT sql FROM sqlite_master WHERE type='table' "
                                      "and name='same_as_relation'")
        self.assertTrue(same_as_sql)

if __name__ == '__main__':
    unittest_main()