new_contents: import locale
  import unittest
  from datetime import datetime
  from cfg import parse_cfg_date, _fix_locale, pretty_date
  
  
  class TestDateHandling(unittest.TestCase):
      def test_date_parsing(self):
          test_date = "2015-01-02 18:06"
          parsed = parse_cfg_date(test_date)
          self.assertEquals(parsed, datetime(2015, 01, 02, 18, 06))
  
      def test_locale_set(self):
          oldloc = locale.getlocale(locale.LC_TIME)
          locale.setlocale(locale.LC_TIME, "C")
          self.assertEquals(locale.getlocale(locale.LC_TIME)[0], None)
          with _fix_locale("de_DE"):
              self.assertEquals(locale.getlocale(locale.LC_TIME)[0], "de_DE")
          self.assertEquals(locale.getlocale(locale.LC_TIME)[0], None)
  
      def test_date_format(self):
          date = datetime(2015, 10, 17, 18, 06)
  
          self.assertEquals(pretty_date(date), "17.10.")
          self.assertEquals(pretty_date(date, show_year=True), "17.10.2015")
          self.assertEquals(pretty_date(date, month_name=True), "17. Oktober")
          self.assertEquals(pretty_date(date, with_weekday=True), "Samstag, den 17.10.")
          self.assertEquals(pretty_date(date, show_year=True, month_name=True),
                            "17. Oktober 2015")
          self.assertEquals(pretty_date(date, show_year=True, month_name=True, with_weekday=True),
                            "Samstag, den 17. Oktober 2015")
  
subject: Add unittests for date stuff.