text: from django.conf import settings
  from django.contrib import comments
  from django.contrib.comments.models import Comment
  from django.contrib.comments.forms import CommentForm
  from regressiontests.comment_tests.tests import CommentTestCase
  
  class CommentAppAPITests(CommentTestCase):
      """Tests for the "comment app" API"""
  
      def testGetCommentApp(self):
          self.assertEqual(comments.get_comment_app(), comments)
  
      def testGetForm(self):
          self.assertEqual(comments.get_form(), CommentForm)
  
      def testGetFormTarget(self):
          self.assertEqual(comments.get_form_target(), "/post/")
  
      def testGetFlagURL(self):
          c = Comment(id=12345)
          self.assertEqual(comments.get_flag_url(c), "/flag/12345/")
  
      def getGetDeleteURL(self):
          c = Comment(id=12345)
          self.assertEqual(comments.get_delete_url(c), "/delete/12345/")
  
      def getGetApproveURL(self):
          c = Comment(id=12345)
          self.assertEqual(comments.get_approve_url(c), "/approve/12345/")
  
  
  class CustomCommentTest(CommentTestCase):
      urls = 'regressiontests.comment_tests.urls'
  
      def setUp(self):
          self.old_comments_app = getattr(settings, 'COMMENTS_APP', None)
          settings.COMMENTS_APP = 'regressiontests.comment_tests.custom_comments'
          settings.INSTALLED_APPS = list(settings.INSTALLED_APPS) + [settings.COMMENTS_APP,]
  
      def tearDown(self):
          del settings.INSTALLED_APPS[-1]
          settings.COMMENTS_APP = self.old_comments_app
          if settings.COMMENTS_APP is None:
              del settings._wrapped.COMMENTS_APP
  
      def testGetCommentApp(self):
          from regressiontests.comment_tests import custom_comments
          self.assertEqual(comments.get_comment_app(), custom_comments)
  
      def testGetModel(self):
          from regressiontests.comment_tests.custom_comments.models import CustomComment
          self.assertEqual(comments.get_model(), CustomComment)
  
      def testGetForm(self):
          from regressiontests.comment_tests.custom_comments.forms import CustomCommentForm
          self.assertEqual(comments.get_form(), CustomCommentForm)
  
      def testGetFormTarget(self):
          self.assertEqual(comments.get_form_target(), "/post/")
  
      def testGetFlagURL(self):
          c = Comment(id=12345)
          self.assertEqual(comments.get_flag_url(c), "/flag/12345/")
  
      def getGetDeleteURL(self):
          c = Comment(id=12345)
          self.assertEqual(comments.get_delete_url(c), "/delete/12345/")
  
      def getGetApproveURL(self):
          c = Comment(id=12345)
          self.assertEqual(comments.get_approve_url(c), "/approve/12345/")
  