def _create_instance(self,type):
     instance_type = type
     name = type
     flavor_id = "flavor_id"
     image_id = "image_id"
     databases = "databases"
     users = "users"
     service_type = "mysql"
     volume_size = "10"
     backup_id = "backup_id"
     master_id = "master_id"
     extend = ""
     
     when(KSC_Instance)._check_flavor(any(),any()).thenReturn(None)
     when(KSC_Instance)._check_backup(any(),any()).thenReturn(None)
     
     group = fake()
     group.id = 1
     when(InstanceGroup).create(any(),tenant_id=any()).thenReturn(group)
     
     db_info = fake()
     db_info.id = 1
     service_status = fake()
     service_status.id = 1
     when(KSC_Instance)._create_dbinstance(any(),any(),any(),
                                         any(), any(),any(),any()).thenReturn((db_info,service_status))
                                         
     when(KSC_Instance)._create_autobackup(any(),any(),any()).thenReturn(None)
     
     when(KSC_Instance)._create_security_group(any(),any(),any()).thenReturn(None)
     
     when(task_api.API).create_ha_instance(any(), any(), 
                                               any(),any(), 
                                               any(),any(),any(),any(),
                                               any(),any(),
                                               any(),any(),any()).thenReturn(None)
                                               
                                               
     when(task_api.API).create_sg_instance(any(), any(), 
                                               any(),any(), 
                                               any(),any(),any(),any(),
                                               any(),any(),
                                               any()).thenReturn(None)
                                               
     when(task_api.API).create_rr_instance(any(), any(), any(),
                                               any(), any(), any(),
                                               any(), any(),
                                               any(), any(), 
                                               any()).thenReturn(None)
                                               
                                               
     when(task_api.API).upgrade_instance_toha(any(), any(), any(),
                                               any(), any(), any(),
                                               any(), any(),
                                               any(), any(),
                                               any()).thenReturn(None)
                                               
                                               
     group_item = fake()
     group_item.group_id = 1
     when(InstanceGroupItem).get_by_instance_id(any(), any()).thenReturn(group_item)
     
     self.assertNotEqual(None,KSC_Instance._create_instance(self.context, instance_type,name, flavor_id, image_id, databases, users, service_type, 
             volume_size, backup_id, extend,master_id))