new_contents: from __future__ import print_function
  
  from datetime import datetime
  
  import unittest
  from mock import patch
  
  import netkraken
  
  
  class NetKrakenTests(unittest.TestCase):
  
      def test_get_timestamp(self):
          self.assertEquals(("minute", "2042-12-12T12:12"),
                            netkraken.get_timestamp("2042-12-12T12:12"))
          self.assertEquals(("minute", "2042-12-12T12:12"),
                            netkraken.get_timestamp("///foo///2042-12-12T12:12"))
          self.assertRaises(Exception, netkraken.get_timestamp, "no-valid-date")
  
      def test_get_higher_timestamp(self):
          self.assertEquals(("hour", "2042-12-12T12"),
                            netkraken.get_higher_timestamp("///foo///2042-12-12T12:12"))
          self.assertEquals(("day", "2042-12-12"),
                            netkraken.get_higher_timestamp("///foo///2042-12-12T12"))
  
      @patch("netkraken.get_current_datetime")
      def test_get_current_timestrings(self, now_mock):
          now_mock.return_value = datetime(2042, 12, 12, 12, 12)
          self.assertDictEqual({'day': '2042-12-12', 'hour': '2042-12-12T12', 'minute': '2042-12-12T12:12'}, 
                               netkraken.get_current_timestrings())
  
  
  if __name__ == "__main__":
      unittest.main()
  
subject: raise test coverage up to 70%