new_contents: #!/usr/bin/python
  """very basic test cases that load the classes
  
  :author: `Patrick Kanzler <patrick.kanzler@fablab.fau.de>`_ and others
  :organization: Bashlinux and `python-escpos <https://github.com/python-escpos>`_
  :copyright: Copyright (c) 2016 `python-escpos <https://github.com/python-escpos>`_
  :license: GNU GPL v3
  """
  
  from nose.tools import with_setup
  
  import escpos.printer as printer
  import os
  
  def setup_testfile():
      """create a testfile as devfile"""
      fhandle = open('testfile', 'a')
      try:
          os.utime('testfile', None)
      finally:
          fhandle.close()
  
  def teardown_testfile():
      """destroy testfile again"""
      os.remove('testfile')
  
  @with_setup(setup_testfile, teardown_testfile)
  def test_instantiation():
      """test the instantiation of a escpos-printer class and basic printing"""
      instance = printer.File(devfile='testfile')
      instance.text('This is a test\n')
  
subject: ADD very basic nosetest