code: def test_output(self):
      model = self.init_model((3,), (1,))
      global MAX_LEN
      MAX_LEN = 2
      RUNNER.run_model_with_task(TEXT_CLS, model)
  
imports: import pytest
  from .model_runner import *
  from fastNLP.envs.imports import _NEED_IMPORT_TORCH
label_desc: Use image node_id 4 for calling the TestCNNText obj's underlying member method code with example usage: obj.test_output() without return types