code: def test_init_model(self):
      with pytest.raises(Exception):
          self.init_model(2, 4)
      with pytest.raises(Exception):
          self.init_model((2,))
  
imports: import pytest
  from .model_runner import *
  from fastNLP.envs.imports import _NEED_IMPORT_TORCH
label_desc: Use image node_id 3 for calling the TestCNNText obj's underlying member method code with example usage: obj.test_init_model() without return types