new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  from __future__ import print_function, unicode_literals
  import pytest
  from wamopacker.process import run_command, ProcessException
  import os
  import uuid
  
  
  def test_run_command():
      cwd = os.getcwd()
      output_cmd = run_command('ls -1A', working_dir = cwd)
      output_py = os.listdir(cwd)
      assert sorted(output_cmd) == sorted(output_py)
  
  
  def test_run_command_error():
      data = uuid.uuid4().hex
      with pytest.raises(ProcessException) as e:
          run_command('cat {}'.format(data))
  
      assert e.value.output_std == ''
      assert e.value.output_err == 'cat: {}: No such file or directory\n'.format(data)
      assert e.value.exit_code != 0
  
subject: Add simple process tests.