class_docstr: Test runtime conf
class_docstr_tok: ["Test","runtime","conf"]
code: def test_create_exception(self):
      conf = {
          "name": "test",
          "device": 1,
          "acc_info": {
              "type": "unkown",
              "params": {
                  "model_name": "resnet50",
                  "inputs": ["in"],
                  "outputs": ["out"],
              },
          },
      }
  
      with self.assertRaises(ValueError):
          RuntimeConf.from_node_config(NodeConfig(**conf))
  
file_path: towhee/tests/unittests/runtime/test_runtime_config.py
imports: import unittest
  import copy
  from concurrent.futures import ThreadPoolExecutor
  from towhee.runtime.runtime_conf import RuntimeConf, set_runtime_config, get_sys_config, get_accelerator
  from towhee.runtime.node_config import NodeConfig
label_desc: Use image node_id 2 for calling the TestRuntimeConf obj's underlying member method code with example usage: obj.test_create_exception() without return types