server/test/unittest_storage.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Thu, 20 May 2010 20:50:00 +0200
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parent 5426 0d4853a6e5ee
child 5575 8a531340c3ef
permissions -rw-r--r--
[entity] continue cleanup of Entity/AnyEntity namespace * prefix by cw_ or _cw all '2nd zone' attributes / methods, other most commonly used will be done later (some methods used by client are made private anyway when they are for internal purpose anyway) * kill set_eid, use direct affectation instead * kill the auto-transmutation feature (pre_add_hook), hence releasing 3.9 will require releasing file cube as well
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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 module cubicweb.server.sources.storages"""
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from __future__ import with_statement
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from logilab.common.testlib import unittest_main
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from cubicweb.devtools.testlib import CubicWebTC
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import os.path as osp
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import shutil
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import tempfile
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from cubicweb import Binary, QueryError
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from cubicweb.selectors import implements
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from cubicweb.server.sources import storages
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from cubicweb.server.hook import Hook, Operation
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class DummyBeforeHook(Hook):
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    __regid__ = 'dummy-before-hook'
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    __select__ = Hook.__select__ & implements('File')
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    events = ('before_add_entity',)
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    def __call__(self):
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        self._cw.transaction_data['orig_file_value'] = self.entity.data.getvalue()
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class DummyAfterHook(Hook):
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    __regid__ = 'dummy-after-hook'
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    __select__ = Hook.__select__ & implements('File')
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    events = ('after_add_entity',)
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    def __call__(self):
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        # new value of entity.data should be the same as before
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        oldvalue = self._cw.transaction_data['orig_file_value']
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        assert oldvalue == self.entity.data.getvalue()
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class StorageTC(CubicWebTC):
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    def setup_database(self):
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        self.tempdir = tempfile.mkdtemp()
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        bfs_storage = storages.BytesFileSystemStorage(self.tempdir)
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        storages.set_attribute_storage(self.repo, 'File', 'data', bfs_storage)
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    def tearDown(self):
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        super(CubicWebTC, self).tearDown()
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        storages.unset_attribute_storage(self.repo, 'File', 'data')
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        shutil.rmtree(self.tempdir)
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    def create_file(self, content='the-data'):
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        req = self.request()
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        return req.create_entity('File', data=Binary(content),
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                                 data_format=u'text/plain', data_name=u'foo.pdf')
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    def fspath(self, entity):
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        fspath = self.execute('Any fspath(D) WHERE F eid %(f)s, F data D',
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                              {'f': entity.eid})[0][0]
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        return fspath.getvalue()
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    def test_bfss_storage(self):
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        f1 = self.create_file()
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        expected_filepath = osp.join(self.tempdir, '%s_data_%s' %
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                                     (f1.eid, f1.data_name))
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        self.failUnless(osp.isfile(expected_filepath))
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        self.assertEquals(file(expected_filepath).read(), 'the-data')
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        self.rollback()
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        self.failIf(osp.isfile(expected_filepath))
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        f1 = self.create_file()
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        self.commit()
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        self.assertEquals(file(expected_filepath).read(), 'the-data')
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        f1.set_attributes(data=Binary('the new data'))
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        self.rollback()
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        self.assertEquals(file(expected_filepath).read(), 'the-data')
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        f1.cw_delete()
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        self.failUnless(osp.isfile(expected_filepath))
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        self.rollback()
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        self.failUnless(osp.isfile(expected_filepath))
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        f1.cw_delete()
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        self.commit()
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        self.failIf(osp.isfile(expected_filepath))
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    def test_bfss_sqlite_fspath(self):
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        f1 = self.create_file()
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        expected_filepath = osp.join(self.tempdir, '%s_data_%s' % (f1.eid, f1.data_name))
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        self.assertEquals(self.fspath(f1), expected_filepath)
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    def test_bfss_fs_importing_doesnt_touch_path(self):
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        self.session.transaction_data['fs_importing'] = True
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        filepath = osp.abspath(__file__)
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        f1 = self.session.create_entity('File', data=Binary(filepath),
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                                        data_format=u'text/plain', data_name=u'foo')
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        self.assertEquals(self.fspath(f1), filepath)
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    def test_source_storage_transparency(self):
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        with self.temporary_appobjects(DummyBeforeHook, DummyAfterHook):
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   112
            self.create_file()
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   113
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   114
    def test_source_mapped_attribute_error_cases(self):
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        ex = self.assertRaises(QueryError, self.execute,
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   116
                               'Any X WHERE X data ~= "hop", X is File')
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        self.assertEquals(str(ex), 'can\'t use File.data (X data ILIKE "hop") in restriction')
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        ex = self.assertRaises(QueryError, self.execute,
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                               'Any X, Y WHERE X data D, Y data D, '
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                               'NOT X identity Y, X is File, Y is File')
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        self.assertEquals(str(ex), "can't use D as a restriction variable")
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   122
        # query returning mix of mapped / regular attributes (only file.data
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   123
        # mapped, not image.data for instance)
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        ex = self.assertRaises(QueryError, self.execute,
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   125
                               'Any X WITH X BEING ('
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   126
                               ' (Any NULL)'
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   127
                               '  UNION '
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   128
                               ' (Any D WHERE X data D, X is File)'
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   129
                               ')')
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   130
        self.assertEquals(str(ex), 'query fetch some source mapped attribute, some not')
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        ex = self.assertRaises(QueryError, self.execute,
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   132
                               '(Any D WHERE X data D, X is File)'
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   133
                               ' UNION '
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   134
                               '(Any D WHERE X data D, X is Image)')
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   135
        self.assertEquals(str(ex), 'query fetch some source mapped attribute, some not')
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   136
        ex = self.assertRaises(QueryError,
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   137
                               self.execute, 'Any D WHERE X data D')
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   138
        self.assertEquals(str(ex), 'query fetch some source mapped attribute, some not')
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   139
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   140
    def test_source_mapped_attribute_advanced(self):
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   141
        f1 = self.create_file()
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        rset = self.execute('Any X,D WITH D,X BEING ('
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   143
                            ' (Any D, X WHERE X eid %(x)s, X data D)'
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   144
                            '  UNION '
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                            ' (Any D, X WHERE X eid %(x)s, X data D)'
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   146
                            ')', {'x': f1.eid})
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        self.assertEquals(len(rset), 2)
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        self.assertEquals(rset[0][0], f1.eid)
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        self.assertEquals(rset[1][0], f1.eid)
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        self.assertEquals(rset[0][1].getvalue(), 'the-data')
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        self.assertEquals(rset[1][1].getvalue(), 'the-data')
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        rset = self.execute('Any X,LENGTH(D) WHERE X eid %(x)s, X data D',
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                            {'x': f1.eid})
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        self.assertEquals(len(rset), 1)
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        self.assertEquals(rset[0][0], f1.eid)
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        self.assertEquals(rset[0][1], len('the-data'))
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        rset = self.execute('Any X,LENGTH(D) WITH D,X BEING ('
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   158
                            ' (Any D, X WHERE X eid %(x)s, X data D)'
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   159
                            '  UNION '
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   160
                            ' (Any D, X WHERE X eid %(x)s, X data D)'
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   161
                            ')', {'x': f1.eid})
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        self.assertEquals(len(rset), 2)
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        self.assertEquals(rset[0][0], f1.eid)
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   164
        self.assertEquals(rset[1][0], f1.eid)
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        self.assertEquals(rset[0][1], len('the-data'))
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   166
        self.assertEquals(rset[1][1], len('the-data'))
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   167
        ex = self.assertRaises(QueryError, self.execute,
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   168
                               'Any X,UPPER(D) WHERE X eid %(x)s, X data D',
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   169
                               {'x': f1.eid})
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   170
        self.assertEquals(str(ex), 'UPPER can not be called on mapped attribute')
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   171
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   172
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   173
    def test_bfss_fs_importing_transparency(self):
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        self.session.transaction_data['fs_importing'] = True
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   175
        filepath = osp.abspath(__file__)
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   176
        f1 = self.session.create_entity('File', data=Binary(filepath),
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   177
                                        data_format=u'text/plain', data_name=u'foo')
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        self.assertEquals(f1.data.getvalue(), file(filepath).read(),
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   179
                          'files content differ')
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   180
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   181
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   182
    def test_bfss_update_with_existing_data(self):
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        # use self.session to use server-side cache
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        f1 = self.session.create_entity('File', data=Binary('some data'),
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   185
                                        data_format=u'text/plain', data_name=u'foo')
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        # NOTE: do not use set_attributes() which would automatically
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        #       update f1's local dict. We want the pure rql version to work
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   188
        self.execute('SET F data %(d)s WHERE F eid %(f)s',
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                     {'d': Binary('some other data'), 'f': f1.eid})
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        self.assertEquals(f1.data.getvalue(), 'some other data')
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   191
        self.commit()
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        f2 = self.execute('Any F WHERE F eid %(f)s, F is File', {'f': f1.eid}).get_entity(0, 0)
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        self.assertEquals(f2.data.getvalue(), 'some other data')
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   194
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   195
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    def test_bfss_update_with_fs_importing(self):
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        # use self.session to use server-side cache
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        f1 = self.session.create_entity('File', data=Binary('some data'),
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                                        data_format=u'text/plain', data_name=u'foo')
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        old_fspath = self.fspath(f1)
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        self.session.transaction_data['fs_importing'] = True
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        new_fspath = osp.join(self.tempdir, 'newfile.txt')
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        file(new_fspath, 'w').write('the new data')
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        self.execute('SET F data %(d)s WHERE F eid %(f)s',
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                     {'d': Binary(new_fspath), 'f': f1.eid})
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        self.commit()
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        self.assertEquals(f1.data.getvalue(), 'the new data')
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        self.assertEquals(self.fspath(f1), new_fspath)
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        self.failIf(osp.isfile(old_fspath))
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4967
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if __name__ == '__main__':
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    unittest_main()