153     @classmethod

   153     @classmethod

   154     def setUpClass(cls):

   154     def setUpClass(cls):

   155         if cls.backend is not None:

   155         if cls.backend is not None:

   156             try:

   156             try:

   157                 cls.dbhelper = get_db_helper(cls.backend)

   157                 cls.dbhelper = get_db_helper(cls.backend)

   159                 raise SkipTest(str(ex))

   159                 raise SkipTest(str(ex))

   160 

   160 

   161     def setUp(self):

   161     def setUp(self):

   162         self.repo = FakeRepo(self.schema)

   162         self.repo = FakeRepo(self.schema)

   163         self.repo.system_source = mock_object(dbdriver=self.backend)

   163         self.repo.system_source = mock_object(dbdriver=self.backend)