new_contents: from checkinchecker.checker import filter_matches
  from unittest import TestCase
  
  class CheckerTests(TestCase):
      def test_match_filter_visulite(self):
          possibilities = [
              {"id": 0, "tags": {"name": "Taste of India"}},
              {"id": 0, "tags": {"name": "Staunton"}},
              {"id": 1, "tags": {"name": "Visulite Cinema"}},
          ]
          venue_name = "Visulite Cinema - Downtown Staunton"
          matches = filter_matches(venue_name, possibilities)
  
          self.assertEqual(1, len(matches))
          self.assertEqual(1, matches[0][1]['id'])
  
      def test_match_filter_iad_airport(self):
          possibilities = [
              {"id": 0, "tags": {"name": "Dunkin' Donuts"}},
              {"id": 1, "tags": {"name": "Ronald Reagan Washington National Airport"}},
              {"id": 0, "tags": {"name": "Police"}},
              {"id": 0, "tags": {"name": "Faber News"}},
          ]
          venue_name = "Ronald Reagan Washington National Airport (DCA)"
          matches = filter_matches(venue_name, possibilities)
  
          self.assertEqual(1, len(matches))
          self.assertEqual(1, matches[0][1]['id'])
  
      def test_match_filter_apartment(self):
          possibilities = [
              {"id": 0, "tags": {"name": "Berean Baptist Church"}},
              {"id": 0, "tags": {"name": "Church of Christ of Albina"}},
              {"id": 0, "tags": {"name": "Community Church of God"}},
              {"id": 1, "tags": {"name": "The Mason Williams"}},
          ]
          venue_name = "The Mason Williams"
          matches = filter_matches(venue_name, possibilities)
  
          self.assertEqual(1, len(matches))
          self.assertEqual(1, matches[0][1]['id'])
  
      def test_match_filter_neighborhood(self):
          possibilities = [
              {"id": 0, "tags": {"name": "Berean Baptist Church"}},
              {"id": 0, "tags": {"name": "Church of Christ of Albina"}},
              {"id": 0, "tags": {"name": "Community Church of God"}},
              {"id": 1, "tags": {"name": "The Mason Williams"}},
          ]
          venue_name = "Tanjong Pagar"
          matches = filter_matches(venue_name, possibilities)
  
          self.assertEqual(1, len(matches))
          self.assertEqual(1, matches[0][1]['id'])
  
subject: Add tests for the matcher