old_contents: import os.path
  import sys
  
  from perf.tests import get_output
  from perf.tests import unittest
  
  
  class SystemTests(unittest.TestCase):
      def test_show(self):
          args = [sys.executable, '-m', 'perf', 'system', 'show']
          proc = get_output(args)
  
          regex = ('(Run "%s -m perf system tune" to tune the system configuration to run benchmarks'
                   '|OK! System ready for benchmarking'
                   '|WARNING: no operation available for your platform)'
                   % os.path.basename(sys.executable))
          self.assertRegex(proc.stdout, regex, msg=proc)
  
          self.assertEqual(proc.returncode, 2, msg=proc)
  
  
  if __name__ == "__main__":
      unittest.main()
  
new_contents: import os.path
  import sys
  
  from perf.tests import get_output
  from perf.tests import unittest
  
  
  class SystemTests(unittest.TestCase):
      def test_show(self):
          args = [sys.executable, '-m', 'perf', 'system', 'show']
          proc = get_output(args)
  
          regex = ('(Run "%s -m perf system tune" to tune the system configuration to run benchmarks'
                   '|OK! System ready for benchmarking'
                   '|WARNING: no operation available for your platform)'
                   % os.path.basename(sys.executable))
          self.assertRegex(proc.stdout, regex, msg=proc)
  
          # The return code is either 0 if the system is tuned or 2 if the
          # system isn't
          self.assertIn(proc.returncode, (0, 2), msg=proc)
  
  
  if __name__ == "__main__":
      unittest.main()
  
subject: Fix test_show test to support tuned systems