old_contents: from io import open
  import os
  import shutil
  from tempfile import mkdtemp
  from tempfile import mkstemp
  from unittest import TestCase
  
  from wiki.core import Wiki
  
  #: the default configuration
  CONFIGURATION = u"""
  PRIVATE=False
  TITLE='test'
  DEFAULT_SEARCH_IGNORE_CASE=False
  DEFAULT_AUTHENTICATION_METHOD='hash'
  """
  
  
  class WikiBaseTestCase(TestCase):
  
      #: The contents of the ``config.py`` file.
      config_content = CONFIGURATION
  
      _wiki = None
  
      def setUp(self):
          """
              Creates a content directory for the wiki to use
              and adds a configuration file with some example content.
          """
          self.rootdir = mkdtemp()
          self.create_file(u'config.py', self.config_content)
  
      @property
      def wiki(self):
          if not self._wiki:
              self._wiki = Wiki(self.rootdir)
          return self._wiki
  
      def create_file(self, name, content=u'', folder=None):
          """
              Easy way to create a file.
  
              :param unicode name: the name of the file to create
              :param unicode content: content of the file (optional)
              :param unicode folder: the folder where the file should be
                  created, defaults to the temporary directory
  
              :returns: the absolute path of the newly created file
              :rtype: unicode
          """
          if folder is None:
              folder = self.rootdir
  
          path = os.path.join(folder, name)
  
          if not os.path.exists(os.path.dirname(path)):
              os.makedirs(os.path.dirname(path))
  
          with open(path, 'w', encoding='utf-8') as fhd:
              fhd.write(content)
  
          return path
  
  
      def tearDown(self):
          """
              Will remove the root directory and all contents if one
              exists.
          """
          if self.rootdir and os.path.exists(self.rootdir):
              shutil.rmtree(self.rootdir)
  
new_contents: from io import open
  import os
  import shutil
  from tempfile import mkdtemp
  from tempfile import mkstemp
  from unittest import TestCase
  
  from wiki.core import Wiki
  
  #: the default configuration
  CONFIGURATION = u"""
  PRIVATE=False
  TITLE='test'
  DEFAULT_SEARCH_IGNORE_CASE=False
  DEFAULT_AUTHENTICATION_METHOD='hash'
  """
  
  
  class WikiBaseTestCase(TestCase):
  
      #: The contents of the ``config.py`` file.
      config_content = CONFIGURATION
  
      def setUp(self):
          """
              Creates a content directory for the wiki to use
              and adds a configuration file with some example content.
          """
          self._wiki = None
          self.rootdir = mkdtemp()
          self.create_file(u'config.py', self.config_content)
  
      @property
      def wiki(self):
          if not self._wiki:
              self._wiki = Wiki(self.rootdir)
          return self._wiki
  
      def create_file(self, name, content=u'', folder=None):
          """
              Easy way to create a file.
  
              :param unicode name: the name of the file to create
              :param unicode content: content of the file (optional)
              :param unicode folder: the folder where the file should be
                  created, defaults to the temporary directory
  
              :returns: the absolute path of the newly created file
              :rtype: unicode
          """
          if folder is None:
              folder = self.rootdir
  
          path = os.path.join(folder, name)
  
          if not os.path.exists(os.path.dirname(path)):
              os.makedirs(os.path.dirname(path))
  
          with open(path, 'w', encoding='utf-8') as fhd:
              fhd.write(content)
  
          return path
  
  
      def tearDown(self):
          """
              Will remove the root directory and all contents if one
              exists.
          """
          if self.rootdir and os.path.exists(self.rootdir):
              shutil.rmtree(self.rootdir)
  
subject: initialize tests correctly.