test/unittest_selectors.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Mon, 13 Sep 2010 14:48:29 +0200
branchstable
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""unit tests for selectors mechanism"""
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from logilab.common.testlib import TestCase, unittest_main
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from cubicweb import Binary
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from cubicweb.devtools.testlib import CubicWebTC
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from cubicweb.appobject import Selector, AndSelector, OrSelector
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from cubicweb.selectors import is_instance, adaptable, match_user_groups
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from cubicweb.interfaces import IDownloadable
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from cubicweb.web import action
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class _1_(Selector):
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    def __call__(self, *args, **kwargs):
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        return 1
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class _0_(Selector):
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    def __call__(self, *args, **kwargs):
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        return 0
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def _2_(*args, **kwargs):
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    return 2
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class SelectorsTC(TestCase):
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    def test_basic_and(self):
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        selector = _1_() & _1_()
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        self.assertEquals(selector(None), 2)
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        selector = _1_() & _0_()
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        self.assertEquals(selector(None), 0)
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        selector = _0_() & _1_()
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        self.assertEquals(selector(None), 0)
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    def test_basic_or(self):
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        selector = _1_() | _1_()
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        self.assertEquals(selector(None), 1)
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        selector = _1_() | _0_()
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        self.assertEquals(selector(None), 1)
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        selector = _0_() | _1_()
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        self.assertEquals(selector(None), 1)
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        selector = _0_() | _0_()
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        self.assertEquals(selector(None), 0)
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    def test_selector_and_function(self):
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        selector = _1_() & _2_
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        self.assertEquals(selector(None), 3)
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        selector = _2_ & _1_()
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        self.assertEquals(selector(None), 3)
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    def test_three_and(self):
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        selector = _1_() & _1_() & _1_()
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        self.assertEquals(selector(None), 3)
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        selector = _1_() & _0_() & _1_()
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        self.assertEquals(selector(None), 0)
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        selector = _0_() & _1_() & _1_()
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        self.assertEquals(selector(None), 0)
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    def test_three_or(self):
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        selector = _1_() | _1_() | _1_()
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        self.assertEquals(selector(None), 1)
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        selector = _1_() | _0_() | _1_()
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        self.assertEquals(selector(None), 1)
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        selector = _0_() | _1_() | _1_()
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        self.assertEquals(selector(None), 1)
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        selector = _0_() | _0_() | _0_()
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        self.assertEquals(selector(None), 0)
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    def test_composition(self):
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        selector = (_1_() & _1_()) & (_1_() & _1_())
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        self.failUnless(isinstance(selector, AndSelector))
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        self.assertEquals(len(selector.selectors), 4)
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        self.assertEquals(selector(None), 4)
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        selector = (_1_() & _0_()) | (_1_() & _1_())
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        self.failUnless(isinstance(selector, OrSelector))
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        self.assertEquals(len(selector.selectors), 2)
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        self.assertEquals(selector(None), 2)
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    def test_search_selectors(self):
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        sel = is_instance('something')
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        self.assertIs(sel.search_selector(is_instance), sel)
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        csel = AndSelector(sel, Selector())
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        self.assertIs(csel.search_selector(is_instance), sel)
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        csel = AndSelector(Selector(), sel)
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        self.assertIs(csel.search_selector(is_instance), sel)
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    def test_inplace_and(self):
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        selector = _1_()
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        selector &= _1_()
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        selector &= _1_()
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        self.assertEquals(selector(None), 3)
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        selector = _1_()
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        selector &= _0_()
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        selector &= _1_()
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        self.assertEquals(selector(None), 0)
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        selector = _0_()
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        selector &= _1_()
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        selector &= _1_()
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        self.assertEquals(selector(None), 0)
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        selector = _0_()
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        selector &= _0_()
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        selector &= _0_()
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        self.assertEquals(selector(None), 0)
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    def test_inplace_or(self):
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        selector = _1_()
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        selector |= _1_()
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        selector |= _1_()
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        self.assertEquals(selector(None), 1)
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        selector = _1_()
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        selector |= _0_()
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        selector |= _1_()
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        self.assertEquals(selector(None), 1)
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        selector = _0_()
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        selector |= _1_()
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        selector |= _1_()
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        self.assertEquals(selector(None), 1)
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        selector = _0_()
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        selector |= _0_()
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        selector |= _0_()
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        self.assertEquals(selector(None), 0)
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class ImplementsSelectorTC(CubicWebTC):
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    def test_etype_priority(self):
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        req = self.request()
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        f = req.create_entity('File', data_name=u'hop.txt', data=Binary('hop'))
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        rset = f.as_rset()
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        anyscore = is_instance('Any')(f.__class__, req, rset=rset)
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        idownscore = adaptable('IDownloadable')(f.__class__, req, rset=rset)
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        self.failUnless(idownscore > anyscore, (idownscore, anyscore))
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        filescore = is_instance('File')(f.__class__, req, rset=rset)
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        self.failUnless(filescore > idownscore, (filescore, idownscore))
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    def test_etype_inheritance_no_yams_inheritance(self):
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        cls = self.vreg['etypes'].etype_class('Personne')
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        self.failIf(is_instance('Societe').score_class(cls, self.request()))
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    def test_yams_inheritance(self):
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        cls = self.vreg['etypes'].etype_class('Transition')
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        self.assertEquals(is_instance('BaseTransition').score_class(cls, self.request()),
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                          3)
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class MatchUserGroupsTC(CubicWebTC):
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    def test_owners_group(self):
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        """tests usage of 'owners' group with match_user_group"""
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        class SomeAction(action.Action):
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            __regid__ = 'yo'
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            category = 'foo'
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            __select__ = match_user_groups('owners')
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        self.vreg._loadedmods[__name__] = {}
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        self.vreg.register(SomeAction)
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        SomeAction.__registered__(self.vreg['actions'])
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        self.failUnless(SomeAction in self.vreg['actions']['yo'], self.vreg['actions'])
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        try:
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            # login as a simple user
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            self.create_user('john')
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            self.login('john')
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            # it should not be possible to use SomeAction not owned objects
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            req = self.request()
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            rset = req.execute('Any G WHERE G is CWGroup, G name "managers"')
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            self.failIf('yo' in dict(self.pactions(req, rset)))
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            # insert a new card, and check that we can use SomeAction on our object
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            self.execute('INSERT Card C: C title "zoubidou"')
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            self.commit()
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            req = self.request()
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            rset = req.execute('Card C WHERE C title "zoubidou"')
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            self.failUnless('yo' in dict(self.pactions(req, rset)), self.pactions(req, rset))
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            # make sure even managers can't use the action
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            self.restore_connection()
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            req = self.request()
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            rset = req.execute('Card C WHERE C title "zoubidou"')
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            self.failIf('yo' in dict(self.pactions(req, rset)))
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        finally:
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            del self.vreg[SomeAction.__registry__][SomeAction.__regid__]
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if __name__ == '__main__':
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    unittest_main()
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