code: def do_profiling(cls):
      results = []
      prof = cls.profilerclass(timer, 0.001)
      start_timer = timer()
      prof.runctx("testfunc()", globals(), locals())
      results.append(timer() - start_timer)
      for methodname in cls.methodnames:
          s = StringIO()
          stats = pstats.Stats(prof, stream=s)
          stats.strip_dirs().sort_stats("stdname")
          getattr(stats, methodname)()
          output = s.getvalue().splitlines()
          mod_name = testfunc.__module__.rsplit(".", 1)[1]
          # Only compare against stats originating from the test file.
          # Prevents outside code (e.g., the io module) from causing
          # unexpected output.
          output = [
              line.rstrip() for line in output if mod_name in line
          ]
          results.append("\n".join(output))
      return results
  
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 3 for calling the ProfileTest obj's underlying member method code with example usage: obj.do_profiling(cls) and returns: results