devtools/fake.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Fri, 11 Jun 2010 13:00:19 +0200
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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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"""Fake objects to ease testing of cubicweb without a fully working environment
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"""
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__docformat__ = "restructuredtext en"
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from logilab.database import get_db_helper
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from cubicweb.req import RequestSessionBase
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from cubicweb.cwvreg import CubicWebVRegistry
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from cubicweb.web.request import CubicWebRequestBase
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from cubicweb.devtools import BASE_URL, BaseApptestConfiguration
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class FakeConfig(dict, BaseApptestConfiguration):
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    translations = {}
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    apphome = None
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    def __init__(self, appid='data', apphome=None, cubes=()):
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        self.appid = appid
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        self.apphome = apphome
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        self._cubes = cubes
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        self['auth-mode'] = 'cookie'
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        self['uid'] = None
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        self['base-url'] = BASE_URL
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        self['rql-cache-size'] = 100
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    def cubes(self, expand=False):
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        return self._cubes
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    def sources(self):
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        return {}
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class FakeRequest(CubicWebRequestBase):
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    """test implementation of an cubicweb request object"""
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    def __init__(self, *args, **kwargs):
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        if not (args or 'vreg' in kwargs):
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            kwargs['vreg'] = CubicWebVRegistry(FakeConfig(), initlog=False)
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        kwargs['https'] = False
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        self._url = kwargs.pop('url', 'view?rql=Blop&vid=blop')
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        super(FakeRequest, self).__init__(*args, **kwargs)
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        self._session_data = {}
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        self._headers = {}
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    def header_accept_language(self):
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        """returns an ordered list of preferred languages"""
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        return ('en',)
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    def header_if_modified_since(self):
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        return None
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    def base_url(self):
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        """return the root url of the instance"""
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        return BASE_URL
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    def relative_path(self, includeparams=True):
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        """return the normalized path of the request (ie at least relative
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        to the instance's root, but some other normalization may be needed
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        so that the returned path may be used to compare to generated urls
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        """
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        if self._url.startswith(BASE_URL):
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            url = self._url[len(BASE_URL):]
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        else:
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            url = self._url
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        if includeparams:
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            return url
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        return url.split('?', 1)[0]
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    def set_content_type(self, content_type, filename=None, encoding=None):
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        """set output content type for this request. An optional filename
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        may be given
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        """
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        pass
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    def set_header(self, header, value, raw=True):
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        """set an output HTTP header"""
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        self._headers[header] = value
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    def add_header(self, header, value):
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        """set an output HTTP header"""
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        self._headers[header] = value # XXX
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    def remove_header(self, header):
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        """remove an output HTTP header"""
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        self._headers.pop(header, None)
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    def get_header(self, header, default=None):
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        """return the value associated with the given input header,
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        raise KeyError if the header is not set
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        """
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        return self._headers.get(header, default)
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    def set_cookie(self, cookie, key, maxage=300, expires=None):
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        """set / update a cookie key
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        by default, cookie will be available for the next 5 minutes
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        """
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        morsel = cookie[key]
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        if maxage is not None:
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            morsel['Max-Age'] = maxage
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        if expires:
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            morsel['expires'] = expires.strftime('%a, %d %b %Y %H:%M:%S %z')
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        # make sure cookie is set on the correct path
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        morsel['path'] = self.base_url_path()
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        self.add_header('Set-Cookie', morsel.OutputString())
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        self.add_header('Cookie', morsel.OutputString())
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    def remove_cookie(self, cookie, key):
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        self.remove_header('Set-Cookie')
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        self.remove_header('Cookie')
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    def validate_cache(self):
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        pass
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class FakeUser(object):
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    login = 'toto'
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    eid = 0
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    def in_groups(self, groups):
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        return True
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class FakeSession(RequestSessionBase):
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    read_security = write_security = True
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    set_read_security = set_write_security = lambda *args, **kwargs: None
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    def __init__(self, repo=None, user=None):
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        self.repo = repo
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        self.vreg = getattr(self.repo, 'vreg', CubicWebVRegistry(FakeConfig(), initlog=False))
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        self.pool = FakePool()
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        self.user = user or FakeUser()
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        self.is_internal_session = False
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        self.transaction_data = {}
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    def execute(self, *args, **kwargs):
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        pass
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    def commit(self, *args):
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        self.transaction_data.clear()
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    def close(self, *args):
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        pass
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    def system_sql(self, sql, args=None):
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        pass
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    def set_entity_cache(self, entity):
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        pass
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class FakeRepo(object):
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    querier = None
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    def __init__(self, schema, vreg=None, config=None):
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        self.extids = {}
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        self.eids = {}
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        self._count = 0
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        self.schema = schema
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        self.config = config or FakeConfig()
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        self.vreg = vreg or CubicWebVRegistry(self.config, initlog=False)
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        self.vreg.schema = schema
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    def internal_session(self):
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        return FakeSession(self)
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    def extid2eid(self, source, extid, etype, session, insert=True,
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                  recreate=False):
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        try:
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            return self.extids[extid]
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        except KeyError:
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            if not insert:
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                return None
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            self._count += 1
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            eid = self._count
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            entity = source.before_entity_insertion(session, extid, etype, eid)
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            self.extids[extid] = eid
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            self.eids[eid] = extid
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            source.after_entity_insertion(session, extid, entity)
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            return eid
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    def eid2extid(self, source, eid, session=None):
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        return self.eids[eid]
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class FakeSource(object):
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    dbhelper = get_db_helper('sqlite')
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    def __init__(self, uri):
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        self.uri = uri
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class FakePool(object):
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    def source(self, uri):
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        return FakeSource(uri)