code: def test_result_image(self):
      dir_path = tempfile.mkdtemp()
      try:
          image_path = os.path.join(dir_path, "kmeans.png")
          example_test.run_example(
              "kmeans/kmeans.py",
              "-m",
              "1",
              "--num",
              "10",
              "-o",
              image_path,
          )
          assert os.path.exists(image_path)
      finally:
          shutil.rmtree(dir_path, ignore_errors=True)
  
file_path: cupy/tests/example_tests/test_kmeans.py
imports: import os
  import re
  import shutil
  import tempfile
  import unittest
  from cupy import testing
  from example_tests import example_test
label_desc: Use image node_id 3 for calling the TestKmeans obj's underlying member method code with example usage: obj.test_result_image() without return types