old_contents: import json
  
  from django.test import TestCase
  from django.core import signing
  from django.core.exceptions import SuspiciousOperation
  from django.http import HttpResponse
  
  from django.contrib.formtools.wizard.storage.cookie import CookieStorage
  from django.contrib.formtools.tests.wizard.storage import get_request, TestStorage
  
  
  class TestCookieStorage(TestStorage, TestCase):
      def get_storage(self):
          return CookieStorage
  
      def test_manipulated_cookie(self):
          request = get_request()
          storage = self.get_storage()('wizard1', request, None)
  
          cookie_signer = signing.get_cookie_signer(storage.prefix)
  
          storage.request.COOKIES[storage.prefix] = cookie_signer.sign(
              storage.encoder.encode({'key1': 'value1'}))
  
          self.assertEqual(storage.load_data(), {'key1': 'value1'})
  
          storage.request.COOKIES[storage.prefix] = 'i_am_manipulated'
          self.assertRaises(SuspiciousOperation, storage.load_data)
  
      def test_reset_cookie(self):
          request = get_request()
          storage = self.get_storage()('wizard1', request, None)
  
          storage.data = {'key1': 'value1'}
  
          response = HttpResponse()
          storage.update_response(response)
  
          cookie_signer = signing.get_cookie_signer(storage.prefix)
          signed_cookie_data = cookie_signer.sign(storage.encoder.encode(storage.data))
          self.assertEqual(response.cookies[storage.prefix].value, signed_cookie_data)
  
          storage.init_data()
          storage.update_response(response)
          unsigned_cookie_data = cookie_signer.unsign(response.cookies[storage.prefix].value)
          self.assertEqual(json.loads(unsigned_cookie_data),
              {"step_files": {}, "step": None, "extra_data": {}, "step_data": {}})
  
new_contents: import json
  
  from django.test import TestCase
  from django.core import signing
  from django.core.exceptions import SuspiciousOperation
  from django.http import HttpResponse
  
  from django.contrib.formtools.wizard.storage.cookie import CookieStorage
  from django.contrib.formtools.tests.wizard.storage import get_request, TestStorage
  
  
  class TestCookieStorage(TestStorage, TestCase):
      def get_storage(self):
          return CookieStorage
  
      def test_manipulated_cookie(self):
          request = get_request()
          storage = self.get_storage()('wizard1', request, None)
  
          cookie_signer = signing.get_cookie_signer(storage.prefix)
  
          storage.request.COOKIES[storage.prefix] = cookie_signer.sign(
              storage.encoder.encode({'key1': 'value1'}))
  
          self.assertEqual(storage.load_data(), {'key1': 'value1'})
  
          storage.request.COOKIES[storage.prefix] = 'i_am_manipulated'
          self.assertRaises(SuspiciousOperation, storage.load_data)
  
      def test_reset_cookie(self):
          request = get_request()
          storage = self.get_storage()('wizard1', request, None)
  
          storage.data = {'key1': 'value1'}
  
          response = HttpResponse()
          storage.update_response(response)
  
          cookie_signer = signing.get_cookie_signer(storage.prefix)
          signed_cookie_data = cookie_signer.sign(storage.encoder.encode(storage.data))
          self.assertEqual(response.cookies[storage.prefix].value, signed_cookie_data)
  
          storage.init_data()
          storage.update_response(response)
          unsigned_cookie_data = cookie_signer.unsign(response.cookies[storage.prefix].value)
          self.assertJSONEqual(unsigned_cookie_data,
              {"step_files": {}, "step": None, "extra_data": {}, "step_data": {}})
  
subject: Use new TestCase methods for equality comparisons