old_contents: import os, tempfile, sys, shutil
  
  def setUp():
      os.environ['LANG'] = os.environ['LC_ALL'] = os.environ['LANGUAGE'] = 'C'
      os.environ['TZ'] = 'GMT'
      os.environ["EMAIL"] = "Foo Bar <foo.bar@example.com>"
      os.environ['CDPATH'] = ''
      os.environ['COLUMNS'] = '80'
      os.environ['GREP_OPTIONS'] = ''
      os.environ['http_proxy'] = ''
  
      os.environ["HGEDITOR"] = sys.executable + ' -c "import sys; sys.exit(0)"'
      os.environ["HGMERGE"] = "internal:merge"
      os.environ["HGUSER"]   = "test"
      os.environ["HGENCODING"] = "ascii"
      os.environ["HGENCODINGMODE"] = "strict"
      tmpdir = tempfile.mkdtemp('', 'python-hglib.')
      os.environ["HGTMP"] = os.path.realpath(tmpdir)
  
  def tearDown(self):
      os.chdir('..')
      shutil.rmtree(os.environ["HGTMP"])
  
new_contents: import os, tempfile, sys, shutil
  
  def setUp():
      os.environ['LANG'] = os.environ['LC_ALL'] = os.environ['LANGUAGE'] = 'C'
      os.environ['TZ'] = 'GMT'
      os.environ["EMAIL"] = "Foo Bar <foo.bar@example.com>"
      os.environ['CDPATH'] = ''
      os.environ['COLUMNS'] = '80'
      os.environ['GREP_OPTIONS'] = ''
      os.environ['http_proxy'] = ''
  
      os.environ["HGEDITOR"] = sys.executable + ' -c "import sys; sys.exit(0)"'
      os.environ["HGMERGE"] = "internal:merge"
      os.environ["HGUSER"]   = "test"
      os.environ["HGENCODING"] = "ascii"
      os.environ["HGENCODINGMODE"] = "strict"
      tmpdir = tempfile.mkdtemp('', 'python-hglib.')
      os.environ["HGTMP"] = os.path.realpath(tmpdir)
      os.environ["HGRCPATH"] = ""
  
  def tearDown(self):
      os.chdir('..')
      shutil.rmtree(os.environ["HGTMP"])
  
subject: set HGRCPATH so local hgrc's aren't loaded