class_docstr: Basic tests for IGC Teacher to ensure it works for every given variant.
docstr: Test with resnet image mode.
code: def test_display_data_resnet(self):
      """
      Test with resnet image mode.
      """
      for task, ep_ex_counts in VARIANT_TO_EX_EP_COUNTS.items():
          opt = {"task": f"igc:{task}", "image_mode": "resnet152"}
          self._run_display_output(opt, ep_ex_counts)
  
file_path: ParlAI/tests/tasks/test_igc.py
imports: import unittest
  import itertools
  import parlai.utils.testing
  from typing import Dict, List, Tuple, Union
label_desc: Use image node_id 3 for calling the TestIGC obj's underlying member method code with example usage: obj.test_display_data_resnet() without return types