old_contents: from __future__ import unicode_literals
  
  from django.test import TestCase
  
  from caffeine_oauth2.models import CoffeestatsApplication
  
  
  class CoffeestatsApplicationTest(TestCase):
      def test___str__(self):
          application = CoffeestatsApplication(name='test', client_id='client')
          self.assertEquals(str(application), 'test client')
  
new_contents: from __future__ import unicode_literals
  
  from django.contrib.auth import get_user_model
  from django.core.urlresolvers import reverse
  from django.test import TestCase
  
  from caffeine_oauth2.models import CoffeestatsApplication
  
  User = get_user_model()
  
  
  class CoffeestatsApplicationTest(TestCase):
      def test___str__(self):
          application = CoffeestatsApplication(name='test', client_id='client')
          self.assertEquals(str(application), 'test client')
  
      def test_get_absolute_url_unapproved(self):
          application = CoffeestatsApplication(name='test', client_id='client',
                                               pk=1)
          self.assertEqual(
              application.get_absolute_url(),
              reverse('oauth2_provider:pending_approval', kwargs={'pk': 1}))
  
      def test_get_absolute_url_approved(self):
          application = CoffeestatsApplication(name='test', client_id='client',
                                               pk=1, approved=True)
          self.assertEqual(
              application.get_absolute_url(),
              reverse('oauth2_provider:detail', kwargs={'pk': 1}))
  
      def test_approve(self):
          application = CoffeestatsApplication(name='test', client_id='client')
          self.assertFalse(application.approved)
          self.assertIsNone(application.approved_by_id)
          self.assertIsNone(application.approved_on)
          user = User(username='tester')
          application.approve(user)
          self.assertTrue(application.approved)
          self.assertEqual(application.approved_by, user)
          self.assertIsNotNone(application.approved_on)
  
      def test_reject(self):
          user = User.objects.create(username='tester')
          application = CoffeestatsApplication.objects.create(
              name='test', agree=False, user=user)
          client_id = application.client_id
          self.assertIsNotNone(client_id)
          found = CoffeestatsApplication.objects.get(client_id=client_id)
          self.assertEqual(found, application)
          found.reject()
          with self.assertRaises(CoffeestatsApplication.DoesNotExist):
              CoffeestatsApplication.objects.get(client_id=client_id)
  
subject: Add tests for new caffeine_oauth2.models code