text: """
  Copyright (c) 2022 Huawei Technologies Co.,Ltd.
  
  openGauss is licensed under Mulan PSL v2.
  You can use this software according to the terms and conditions of the Mulan PSL v2.
  You may obtain a copy of Mulan PSL v2 at:
  
            http://license.coscl.org.cn/MulanPSL2
  
  THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
  EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
  MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
  See the Mulan PSL v2 for more details.
  """
  """
  Case Type   : GUC
  Case Name   : 使用gs_guc set方法设置参数lo_compat_privileges为无效值,合理报错
  Description :
          1.查询lo_compat_privileges默认值
          2.修改参数值为test
          3.修改参数值为12345
          4.修改参数值为null
          5.修改参数值为空串
          6.恢复参数默认值
  Expect      :
          1.显示默认值为on
          2-5.合理报错
          6.默认值恢复成功
  History     :
  """
  import unittest
  
  from testcase.utils.CommonSH import CommonSH
  from testcase.utils.Constant import Constant
  from testcase.utils.Logger import Logger
  
  LOG = Logger()
  commonsh = CommonSH('dbuser')
  
  
  class ClientConnection(unittest.TestCase):
      def setUp(self):
          LOG.info(
              '---Opengauss_Function_Guc_VPC_Case0010start----')
          self.constant = Constant()
  
      def test_lo_compat_privileges(self):
          LOG.info('---步骤1:查询默认值---')
          sql_cmd = commonsh.execut_db_sql('''show lo_compat_privileges;''')
          LOG.info(sql_cmd)
          self.res = sql_cmd.splitlines()[-2].strip()
          LOG.info('--步骤2:依次修改参数值为test,12345,"''",null--')
          invalid_value = ['test', 12345, "''", 'null']
          for i in invalid_value:
              result = commonsh.execute_gsguc('set',
                                              self.constant.GSGUC_SUCCESS_MSG,
                                              f"lo_compat_privileges={i}")
              self.assertFalse(result)
  
      def tearDown(self):
          LOG.info('---步骤3:清理环境---')
          sql_cmd = commonsh.execut_db_sql('''show lo_compat_privileges;''')
          LOG.info(sql_cmd)
          if self.res != sql_cmd.split('\n')[2].strip():
              msg = commonsh.execute_gsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           f'lo_compat_privileges={self.res}')
              LOG.info(msg)
              msg = commonsh.restart_db_cluster()
              LOG.info(msg)
          status = commonsh.get_db_cluster_status()
          self.assertTrue("Degraded" in status or "Normal" in status)
          LOG.info(
              '----Opengauss_Function_Guc_VPC_Case0010finish---')
  