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How to use migrate_to_version_or_latest method in autotest

Best Python code snippet using autotest_python

migrate.py

Source:migrate.py

...166        self._database.connect()167    def get_mysql_args(self):168        return ('-u %(username)s -p%(password)s -h %(host)s %(db_name)s' %169                self._database.get_database_info())170    def migrate_to_version_or_latest(self, version):171        if version is None:172            self.migrate_to_latest()173        else:174            self.migrate_to_version(version)175    def do_sync_db(self, version=None):176        print 'Migration starting for database', self._get_db_name()177        self.migrate_to_version_or_latest(version)178        print 'Migration complete'179    def test_sync_db(self, version=None):180        """\181        Create a fresh DB and run all migrations on it.182        """183        self.initialize_test_db()184        try:185            print 'Starting migration test on DB', self._get_db_name()186            self.migrate_to_version_or_latest(version)187            # show schema to the user188            os.system('mysqldump %s --no-data=true '189                      '--add-drop-table=false' %190                      self.get_mysql_args())191        finally:192            self.remove_test_db()193        print 'Test finished successfully'194    def simulate_sync_db(self, version=None):195        """\196        Create a fresh DB, copy the existing DB to it, and then197        try to synchronize it.198        """199        db_version = self.get_db_version()200        # don't do anything if we're already at the latest version201        if db_version == self.get_latest_version():202            print 'Skipping simulation, already at latest version'203            return204        # get existing data205        print 'Dumping existing data'206        dump_fd, dump_file = tempfile.mkstemp('.migrate_dump')207        os.system('mysqldump %s >%s' %208                  (self.get_mysql_args(), dump_file))209        # fill in test DB210        self.initialize_test_db()211        print 'Filling in test DB'212        os.system('mysql %s <%s' % (self.get_mysql_args(), dump_file))213        os.close(dump_fd)214        os.remove(dump_file)215        try:216            print 'Starting migration test on DB', self._get_db_name()217            self.migrate_to_version_or_latest(version)218        finally:219            self.remove_test_db()220        print 'Test finished successfully'221USAGE = """\222%s [options] sync|test|simulate|safesync [version]223Options:224    -d --database   Which database to act on225    -a --action     Which action to perform"""\226    % sys.argv[0]227def main():228    parser = OptionParser()229    parser.add_option("-d", "--database",230                      help="which database to act on",231                      dest="database")...

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