old_contents: from mock import Mock
  from nose.tools import eq_
  
  from amo.tests import TestCase
  
  from ..urls import SwitchToDRF
  
  
  class TestDRFSwitch(TestCase):
  
      def test_piston_view(self):
          view = SwitchToDRF('LanguageView')
          eq_(view(Mock(), 1).__module__, 'django.http.response')
          self.create_switch('drf', db=True)
          eq_(view(Mock()).__module__, 'rest_framework.response')
  from mock import Mock
  from nose.tools import eq_
  from test_utils import RequestFactory
  
  from django.contrib.auth.models import AnonymousUser
  
  from amo.tests import TestCase
  from amo.urlresolvers import reverse
  
  from ..urls import SwitchToDRF
  
  
  class TestDRFSwitch(TestCase):
  
      def setUp(self):
          self.factory = RequestFactory()
  
      def test_responses(self):
          view = SwitchToDRF('LanguageView')
          request = self.factory.get(reverse('api.language', args=['1.5']))
          request.APP = Mock(id=1)
          request.user = AnonymousUser()
          eq_(view(request, api_version=1.5).__module__, 'django.http')
          piston_response = view(request, api_version=1.5).content
          self.create_switch('drf', db=True)
          eq_(view(request, api_version=1.5).__module__,
              'rest_framework.response')
          drf_response = view(request, api_version=1.5).render().content
          eq_(piston_response, drf_response)
  
      def test_wrong_format_exceptions(self):
          view = SwitchToDRF('LanguageView')
          request = self.factory.get(reverse('api.language', args=['1.5']))
          request.APP = Mock(id=1)
          request.GET = {'format': 'foo'}
          request.user = AnonymousUser()
          response = view(request, api_version=1.5)
          eq_(response.content, '{"msg": "Not implemented yet."}')
          eq_(response.status_code, 200)
          self.create_switch('drf', db=True)
          response = view(request, api_version=1.5)
          self.assertTrue('<error>Not found</error>'
                          in response.render().content)
          eq_(response.status_code, 404)
  
new_contents: from mock import Mock
  from nose.tools import eq_
  
  from amo.tests import TestCase
  
  from ..urls import SwitchToDRF
  
  
  class TestDRFSwitch(TestCase):
  
      def test_piston_view(self):
          view = SwitchToDRF('LanguageView')
          eq_(view(Mock(), 1).__module__, 'django.http.response')
          self.create_switch('drf', db=True)
          eq_(view(Mock()).__module__, 'rest_framework.response')
  from mock import Mock
  from nose.tools import eq_
  from test_utils import RequestFactory
  
  from django.contrib.auth.models import AnonymousUser
  
  from amo.tests import TestCase
  from amo.urlresolvers import reverse
  
  from ..urls import SwitchToDRF
  
  
  class TestDRFSwitch(TestCase):
  
      def setUp(self):
          self.factory = RequestFactory()
  
      def test_responses(self):
          view = SwitchToDRF('LanguageView')
          request = self.factory.get(reverse('api.language', args=['1.5']))
          request.APP = Mock(id=1)
          request.user = AnonymousUser()
          eq_(view(request, api_version=1.5).__module__, 'django.http.response')
          piston_response = view(request, api_version=1.5).content
          self.create_switch('drf', db=True)
          eq_(view(request, api_version=1.5).__module__,
              'rest_framework.response')
          drf_response = view(request, api_version=1.5).render().content
          eq_(piston_response, drf_response)
  
      def test_wrong_format_exceptions(self):
          view = SwitchToDRF('LanguageView')
          request = self.factory.get(reverse('api.language', args=['1.5']))
          request.APP = Mock(id=1)
          request.GET = {'format': 'foo'}
          request.user = AnonymousUser()
          response = view(request, api_version=1.5)
          eq_(response.content, '{"msg": "Not implemented yet."}')
          eq_(response.status_code, 200)
          self.create_switch('drf', db=True)
          response = view(request, api_version=1.5)
          self.assertTrue('<error>Not found</error>'
                          in response.render().content)
          eq_(response.status_code, 404)
  
subject: fix apps.api.tests.test_urls:TestDRFSwitch.test_responses