new_contents: from unittest import TestCase
  
  from spicedham.digitdestroyer import DigitDestroyer
  
  class TestDigitDestroyer(TestCase):
      
      def test_classify(self):
          dd = DigitDestroyer()
          dd.filter_match = 1
          dd.filter_miss = 0
          match_message = ['1', '2', '3', '1', '1']
          miss_message = ['a', '100']
          self.assertEqual(dd.classify('tag', match_message), 1)
          self.assertEqual(dd.classify('tag', miss_message), 0)
  
  
subject: Add a test for the digitdestroyer filter