old_contents: import unittest
  
  from datetime import date
  
  from calexicon.dates import DateWithCalendar
  
  class TestDateWithCalendar(unittest.TestCase):
      def setUp(self):
          date_dt = date(2010, 8, 1)
          self.date_wc = DateWithCalendar(None, date_dt)
  
      def test_comparisons(self): 
          self.assertTrue(self.date_wc < date(2010, 8, 2))
          self.assertFalse(self.date_wc < date(2010, 7, 31))
          self.assertTrue(self.date_wc > date(2010, 7, 2))
          self.assertFalse(self.date_wc > date(2010, 8, 31))
          
      def test_nonstrict_comparisons(self): 
          self.assertTrue(self.date_wc <= date(2010, 8, 2))
          self.assertFalse(self.date_wc <= date(2010, 7, 31))
          self.assertTrue(self.date_wc >= date(2010, 7, 2))
          self.assertFalse(self.date_wc >= date(2010, 8, 31))
          self.assertTrue(self.date_wc <= date(2010, 8, 1))
          self.assertTrue(self.date_wc >= date(2010, 8, 1))
          
  
new_contents: import unittest
  
  from datetime import date, timedelta
  
  from calexicon.dates import DateWithCalendar
  
  class TestDateWithCalendar(unittest.TestCase):
      def setUp(self):
          date_dt = date(2010, 8, 1)
          self.date_wc = DateWithCalendar(None, date_dt)
  
      def test_comparisons(self): 
          self.assertTrue(self.date_wc < date(2010, 8, 2))
          self.assertFalse(self.date_wc < date(2010, 7, 31))
          self.assertTrue(self.date_wc > date(2010, 7, 2))
          self.assertFalse(self.date_wc > date(2010, 8, 31))
          
      def test_nonstrict_comparisons(self): 
          self.assertTrue(self.date_wc <= date(2010, 8, 2))
          self.assertFalse(self.date_wc <= date(2010, 7, 31))
          self.assertTrue(self.date_wc >= date(2010, 7, 2))
          self.assertFalse(self.date_wc >= date(2010, 8, 31))
          self.assertTrue(self.date_wc <= date(2010, 8, 1))
          self.assertTrue(self.date_wc >= date(2010, 8, 1))
          
      def test_subtraction(self):
          self.assertEqual(self.date_wc - date(2012, 10, 30), timedelta(days=-821))
  
subject: Add a test for __sub__ between a DateWith and a vanilla date.