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/src/transaction/tests/test_savepoint.py
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##############################################################################
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#
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# Copyright (c) 2004 Zope Foundation and Contributors.
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# All Rights Reserved.
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#
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# This software is subject to the provisions of the Zope Public License,
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# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
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# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
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# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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# FOR A PARTICULAR PURPOSE.
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#
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##############################################################################
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import unittest
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class SavepointTests(unittest.TestCase):




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    def testRollbackRollsbackDataManagersThatJoinedLater(self):




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        # A savepoint needs to not just rollback it's savepoints, but needs










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        # to # rollback savepoints for data managers that joined savepoints










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        # after the savepoint:










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        import transaction




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        from transaction.tests import savepointsample




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        dm = savepointsample.SampleSavepointDataManager()




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        dm['name'] = 'bob'




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        sp1 = transaction.savepoint()




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        dm['job'] = 'geek'




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        transaction.savepoint()




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        dm['salary'] = 'fun'




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        dm2 = savepointsample.SampleSavepointDataManager()




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        dm2['name'] = 'sally'




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        self.assertIn('name', dm)




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        self.assertIn('job', dm)




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        self.assertIn('salary', dm)




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        self.assertIn('name', dm2)




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        sp1.rollback()




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        self.assertIn('name', dm)




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        self.assertNotIn('job', dm)




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        self.assertNotIn('salary', dm)




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        self.assertNotIn('name', dm2)




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    def test_commit_after_rollback_for_dm_that_joins_after_savepoint(self):




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        # There was a problem handling data managers that joined after a










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        # savepoint.  If the savepoint was rolled back and then changes










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        # made, the dm would end up being joined twice, leading to extra










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        # tpc calls and pain.










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        import transaction




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        from transaction.tests import savepointsample




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        sp = transaction.savepoint()




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        dm = savepointsample.SampleSavepointDataManager()




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        dm['name'] = 'bob'




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        sp.rollback()




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        dm['name'] = 'Bob'




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        transaction.commit()




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        self.assertEqual(dm['name'], 'Bob')




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