old_contents: import datetime
  import time
  
  from graphite_api.render.attime import parseATTime
  
  from . import TestCase
  
  
  class AtTestCase(TestCase):
      def test_parse(self):
          for value in [
              str(int(time.time())),
              '20140319',
              '20130319+1y',
              '20130319+1mon',
              '20130319+1w',
              '12:12_20130319',
              '3:05am_20130319',
              '3:05pm_20130319',
              'noon20130319',
              'midnight20130319',
              'teatime20130319',
              'yesterday',
              'tomorrow',
              '03/19/2014',
              '03/19/1800',
              '03/19/1950',
              'feb 27',
              'mar 5',
              'mon',
              'tue',
              'wed',
              'thu',
              'fri',
              'sat',
              'sun',
          ]:
              self.assertIsInstance(parseATTime(value), datetime.datetime)
  
          for value in [
              '20130319+1foo',
              'mar',
              'wat',
          ]:
              with self.assertRaises(Exception):
                  parseATTime(value)
  
new_contents: import datetime
  import time
  
  from graphite_api.render.attime import parseATTime
  
  from . import TestCase
  
  
  class AtTestCase(TestCase):
      def test_parse(self):
          for value in [
              str(int(time.time())),
              '20140319',
              '20130319+1y',
              '20130319+1mon',
              '20130319+1w',
              '12:12_20130319',
              '3:05am_20130319',
              '3:05pm_20130319',
              'noon20130319',
              'midnight20130319',
              'teatime20130319',
              'yesterday',
              'tomorrow',
              '03/19/2014',
              '03/19/1800',
              '03/19/1950',
              'feb 27',
              'mar 5',
              'mon',
              'tue',
              'wed',
              'thu',
              'fri',
              'sat',
              'sun',
              '10:00',
          ]:
              self.assertIsInstance(parseATTime(value), datetime.datetime)
  
          for value in [
              '20130319+1foo',
              'mar',
              'wat',
          ]:
              with self.assertRaises(Exception):
                  parseATTime(value)
  
subject: Make sure HH:MM values are allowed