text: from django import test as django_test
  from django.contrib.auth.models import User
  from django.core.handlers.wsgi import WSGIRequest
  from rest_framework import generics, authentication, permissions, status, serializers
  from testapp import models
  from djet import assertions, files, restframework as djet_restframework
  
  
  class APIRequestFactoryTest(django_test.TestCase):
  
      def setUp(self):
          self.factory = djet_restframework.APIRequestFactory()
  
      def test_create_request_should_return_request(self):
          request = self.factory.get()
  
          self.assertIsInstance(request, WSGIRequest)
  
      def test_init_should_create_shortcuts(self):
          request = self.factory.get()
  
          self.assertEqual(request.method, 'GET')
  
      def test_create_request_with_user_should_force_authenticate_user(self):
          user_mock = User.objects.create_user(username='test_user', email='test@example.com')
  
          request = self.factory.get(user=user_mock)
  
          self.assertEqual(request.user, user_mock)
          self.assertEqual(request._force_auth_user, user_mock)
  
  
  class MockModelSerializer(serializers.ModelSerializer):
  
      class Meta:
          model = models.MockModel
          fields = ('field',)
  
  
  class MockFileModelSerializer(serializers.ModelSerializer):
  
      class Meta:
          model = models.MockFileModel
          fields = ('field', 'file')
  
  
  class RetrieveUpdateAPIView(generics.RetrieveUpdateAPIView):
      queryset = models.MockModel.objects.all()
      serializer_class = MockModelSerializer
  
  
  class LoginRequiredRetrieveAPIView(generics.RetrieveAPIView):
      queryset = models.MockModel.objects.all()
      serializer_class = MockModelSerializer
      authentication_classes = (authentication.TokenAuthentication,)
      permission_classes = (permissions.IsAuthenticated,)
  
  
  class CreateAPIView(generics.CreateAPIView):
      queryset = models.MockModel.objects.all()
      serializer_class = MockModelSerializer
  
  
  class MockFileModelCreateAPIView(generics.CreateAPIView):
      queryset = models.MockFileModel.objects.all()
      serializer_class = MockFileModelSerializer
  
  
  class RetrieveUpdateAPIViewTestCaseTest(assertions.StatusCodeAssertionsMixin, djet_restframework.APIViewTestCase):
      view_class = RetrieveUpdateAPIView
  
      def test_get_should_return_json(self):
          instance = models.MockModel.objects.create(field='test')
          request = self.factory.get()
  
          response = self.view(request, pk=instance.pk)
  
          self.assert_status_equal(response, status.HTTP_200_OK)
          self.assertTrue('field' in response.data)
  
      def test_put_should_update_model(self):
          instance = models.MockModel.objects.create(field='test value')
          data = {
              'field': 'test new value',
          }
          request = self.factory.put(data=data)
  
          response = self.view(request, pk=instance.pk)
  
          self.assert_status_equal(response, status.HTTP_200_OK)
          instance.refresh_from_db()
          self.assertEqual(instance.field, data['field'])
  
  
  class LoginRequiredRetrieveAPIViewCaseTest(assertions.StatusCodeAssertionsMixin, djet_restframework.APIViewTestCase):
      view_class = LoginRequiredRetrieveAPIView
  
      def test_get_should_return_json(self):
          user = User.objects.create_user(username='test_user', email='test@example.com')
          instance = models.MockModel.objects.create(field='test')
          request = self.factory.get(user=user)
  
          response = self.view(request, pk=instance.pk)
  
          self.assert_status_equal(response, status.HTTP_200_OK)
          self.assertTrue('field' in response.data)
  
  
  class CreateAPIViewTestCaseTest(assertions.StatusCodeAssertionsMixin, djet_restframework.APIViewTestCase):
      view_class = CreateAPIView
  
      def test_post_should_create_model(self):
          data = {
              'field': 'test value',
          }
          request = self.factory.post(data=data, format='json')
  
          response = self.view(request)
  
          self.assert_status_equal(response, status.HTTP_201_CREATED)
  
  
  class MockFileModelCreateAPIViewTestCaseTest(
      assertions.StatusCodeAssertionsMixin,
      files.InMemoryStorageMixin,
      djet_restframework.APIViewTestCase
  ):
      view_class = MockFileModelCreateAPIView
  
      def test_post_should_create_model(self):
          data = {
              'field': 'test value',
              'file': files.create_inmemory_file('test.txt', content=b'Hello multipart!'),
          }
          request = self.factory.post(data=data, format='multipart')
  
          response = self.view(request)
  
          self.assert_status_equal(response, status.HTTP_201_CREATED)
  