code: def test_operations(self) -> None:
      folder = os.path.join(examples_folder, "operations")
      self.assertEqual(
          os.system(
              f"python {os.path.join(folder, 'run_op.py')} --ci 1"
          ),
          0,
      )
  
file_path: carefree-learn/tests/test_ml_example.py
imports: import os
  import unittest
label_desc: Use image node_id 4 for calling the TestExample obj's underlying member method code with example usage: obj.test_operations() without return types