new_contents: # -*- coding: utf-8 -*-
  """
      Pygments HTML formatter tests
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
      :copyright: 2006 by Georg Brandl.
      :license: BSD, see LICENSE for more details.
  """
  
  import unittest
  import StringIO
  import random
  
  from pygments import lexers, formatters
  from pygments.token import _TokenType
  
  class HtmlFormatterTest(unittest.TestCase):
  
      def test_external_css(self):
          # TODO: write this test.
          pass
  
subject: Add a reminder to write a HTML formatter test.