text: # -*- coding: utf-8 -*-
  """
      Pygments unit tests
      ~~~~~~~~~~~~~~~~~~
  
      Usage::
  
          python run.py [testfile ...]
  
  
      :copyright: Copyright 2006-2017 by the Pygments team, see AUTHORS.
      :license: BSD, see LICENSE for details.
  """
  
  from __future__ import print_function
  
  import os
  import sys
  import warnings
  
  # only find tests in this directory
  if os.path.dirname(__file__):
      os.chdir(os.path.dirname(__file__))
  
  # make FutureWarnings (coming from Regex syntax most likely) and
  # DeprecationWarnings due to non-raw strings an error
  warnings.filterwarnings("error", module=r"pygments\..*",
                          category=FutureWarning)
  warnings.filterwarnings("error", module=r".*pygments.*",
                          category=DeprecationWarning)
  
  
  try:
      import nose
  except ImportError:
      print('nose is required to run the Pygments test suite')
      sys.exit(1)
  
  # make sure the current source is first on sys.path
  sys.path.insert(0, '..')
  
  if '--with-coverage' not in sys.argv:
      # if running with coverage, pygments should not be imported before coverage
      # is started, otherwise it will count already executed lines as uncovered
      try:
          import pygments
      except ImportError as err:
          print('Cannot find Pygments to test: %s' % err)
          sys.exit(1)
      else:
          print('Pygments %s test suite running (Python %s)...' %
                (pygments.__version__, sys.version.split()[0]),
                file=sys.stderr)
  else:
      print('Pygments test suite running (Python %s)...' % sys.version.split()[0],
            file=sys.stderr)
  
  nose.main()
  