new_contents: import json
  import requests
  from requests_testadapter import TestAdapter
  import unittest
  
  import migrate_toilet_codes
  
  
  class TestCreateSession(unittest.TestCase):
      def test_create_session(self):
          username = 'testuser'
          password = 'testpass'
          s = migrate_toilet_codes.create_session(username, password)
          self.assertTrue(isinstance(s, requests.Session))
          self.assertEqual(
              s.headers['Content-type'], "application/json; charset=utf-8")
          self.assertEqual(s.auth, (username, password))
  
  
  class TestGetAllToilets(unittest.TestCase):
      def test_get_list_of_toilets(self):
          s = requests.Session()
          url = 'http://www.example.org/toilet_codes/'
          return_data = [
              {
                  "id": 94,
                  "code": "RR007094FT",
                  "lat": -34.01691,
                  "lon": 18.66339,
                  "section": "RR",
                  "section_number": "94",
                  "cluster": "7",
                  "toilet_type": "FT"
              },
              {
                  "id": 1,
                  "code": "RR001001FT",
                  "lat": -34.01667,
                  "lon": 18.66404,
                  "section": "RR",
                  "section_number": "1",
                  "cluster": "1",
                  "toilet_type": "FT"
              }
          ]
          s.mount(url, TestAdapter(json.dumps(return_data)))
          toilets = migrate_toilet_codes.get_all_toilets(s, url)
          self.assertEqual(return_data, toilets)
  
      def test_http_errors_raised(self):
          s = requests.Session()
          url = 'http://www.example.org/toilet_codes/'
          s.mount(url, TestAdapter('', status=404))
          with self.assertRaises(requests.HTTPError) as e:
              migrate_toilet_codes.get_all_toilets(s, url)
          self.assertEqual(e.exception.response.status_code, 404)
  
subject: Add tests for getting all toilets