code: def test_no_fn(self):
      with pytest.raises(TypeError):
          gr.ChatInterface()
  
imports: import tempfile
  from concurrent.futures import wait
  from pathlib import Path
  from unittest.mock import patch
  import pytest
  import gradio
label_desc: Use image node_id 1 for calling the TestInit obj's underlying member method code with example usage: obj.test_no_fn() without return types