old_contents: import subprocess
  
  def test_run_plugin():
      subprocess.check_call('python -m ibench run -p os sys -b cholesky --size test --file foo', shell=True)
  
  def test_run():
      subprocess.check_call('python -m ibench run', shell=True)
  
  def test_run_simple():
      subprocess.check_call('python -m ibench run -b cholesky --size test --file foo', shell=True)
  
  def test_run_sizes():
      subprocess.check_call('python -m ibench run -b fft --size test --file foo', shell=True)
      subprocess.check_call('python -m ibench run -b fft --size small --file foo', shell=True)
      subprocess.check_call('python -m ibench run -b fft --size large --file foo', shell=True)
  
  def test_run_groups():
      subprocess.check_call('python -m ibench run -b linalg --size test --file foo', shell=True)
  
new_contents: import subprocess
  
  def test_run_plugin():
      subprocess.check_call('IBENCH_PLUGINS="os sys" python -m ibench run -b cholesky --size test --file foo', shell=True)
  
  def test_run():
      subprocess.check_call('python -m ibench run', shell=True)
  
  def test_run_simple():
      subprocess.check_call('python -m ibench run -b cholesky --size test --file foo', shell=True)
  
  def test_run_sizes():
      subprocess.check_call('python -m ibench run -b fft --size test --file foo', shell=True)
      subprocess.check_call('python -m ibench run -b fft --size small --file foo', shell=True)
      subprocess.check_call('python -m ibench run -b fft --size large --file foo', shell=True)
  
  def test_run_groups():
      subprocess.check_call('python -m ibench run -b linalg --size test --file foo', shell=True)
  
subject: fix plugin test