code: def test_default_config(self):
      input_api = InputQueue()
      output_api = OutputQueue()
      assert input_api.name == "serving_stream"
      assert input_api.host == "localhost"
      assert input_api.port == "6379"
      assert output_api.name == "serving_stream"
      assert output_api.host == "localhost"
      assert output_api.port == "6379"
  
imports: from bigdl.serving.client import InputQueue, OutputQueue
label_desc: Use image node_id 1 for calling the TestClient obj's underlying member method code with example usage: obj.test_default_config() without return types