Best Python code snippet using autotest_python
migrate.py
Source:migrate.py  
...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")232    parser.add_option("-a", "--action", help="what action to perform",233                      dest="action")234    parser.add_option("-f", "--force", help="don't ask for confirmation",235                      action="store_true")236    parser.add_option('--debug', help='print all DB queries',237                      action='store_true')238    (options, args) = parser.parse_args()239    database = database_connection.DatabaseConnection(options.database)240    database.debug = options.debug241    database.reconnect_enabled = False242    database.connect()243    manager = MigrationManager(database, force=options.force)244    if len(args) > 0:245        if len(args) > 1:246            version = int(args[1])247        else:248            version = None249        if args[0] == 'sync':250            manager.do_sync_db(version)251        elif args[0] == 'test':252            manager.test_sync_db(version)253        elif args[0] == 'simulate':254            manager.simulate_sync_db(version)255        elif args[0] == 'safesync':256            print 'Simluating migration'257            manager.simulate_sync_db(version)258            print 'Performing real migration'259            manager.do_sync_db(version)260        else:261            print USAGE262        return263    print USAGE264if __name__ == '__main__':...Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
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