code: def test_cprofile(self):
      results = self.do_profiling()
      expected = self.get_expected_output()
      self.assertEqual(results[0], 1000)
      fail = []
      for i, method in enumerate(self.methodnames):
          a = expected[method]
          b = results[i + 1]
          if a != b:
              fail.append(
                  f"\nStats.{method} output for "
                  f"{self.profilerclass.__name__} "
                  "does not fit expectation:"
              )
              fail.extend(
                  unified_diff(
                      a.split("\n"), b.split("\n"), lineterm=""
                  )
              )
      if fail:
          self.fail("\n".join(fail))
  
imports: import sys
  import pstats
  import unittest
  import os
  from difflib import unified_diff
  from io import StringIO
  from test.support.os_helper import TESTFN, unlink, temp_dir, change_cwd
  from contextlib import contextmanager
  import profile
  from test.profilee import testfunc, timer
  from test.support.script_helper import assert_python_failure, assert_python_ok
label_desc: Use image node_id 4 for calling the ProfileTest obj's underlying member method code with example usage: obj.test_cprofile() without return types