old_contents: from django.test import TestCase
  
  # Create your tests here.
  
new_contents: from django.test import TestCase
  from django.test import Client
  from django.core.urlresolvers import resolve
  
  class MdotdevTest(TestCase):
  
      def setUp(self):
          self.client = Client()
          pass
  
      def test_url_home(self):
          resolver = resolve('/developers/')
          self.assertEqual('home', resolver.view_name)
  
      def test_url_guidelines(self):
          resolver = resolve('/developers/guidelines/')
          self.assertEqual('guidelines', resolver.view_name)
  
      def test_url_process(self):
          resolver = resolve('/developers/process/')
          self.assertEqual('process', resolver.view_name)
  
      def test_url_review(self):
          resolver = resolve('/developers/review/')
          self.assertEqual('review', resolver.view_name)
  
      def test_view_home(self):
          response = self.client.get('/developers/')
          self.assertEqual(response.status_code, 200)
  
      def test_view_guidelines(self):
          response = self.client.get('/developers/guidelines/')
          self.assertEqual(response.status_code, 200)
  
      def test_view_process(self):
          response = self.client.get('/developers/process/')
          self.assertEqual(response.status_code, 200)
  
      def test_view_review(self):
          response = self.client.get('/developers/process/')
          self.assertEqual(response.status_code, 200)
  
      def tearDown(self):
          pass
  
subject: Test the urls.py and views.py.