old_contents: import json
  
  from rest_framework import serializers
  from rest_framework.renderers import JSONRenderer
  
  from django.test.client import RequestFactory
  
  from editorsnotes.auth.models import Project
  
  from .views import ClearContentTypesTransactionTestCase
  from ..serializers.base import EmbeddedItemsMixin
  from ..serializers import ProjectSerializer
  
  
  class EmbeddingSerializerTestCase(ClearContentTypesTransactionTestCase):
      fixtures = ['projects.json']
  
      def setUp(self):
          factory = RequestFactory()
          self.dummy_request = factory.get('/')
  
      def test_has_embedded_project(self):
          context = {'request': self.dummy_request}
  
          project = Project.objects.get(slug='emma')
          project_url = self.dummy_request.build_absolute_uri(
              project.get_absolute_url())
          project_serializer = ProjectSerializer(
              instance=project, context=context)
  
          class SimpleEmbeddingSerializer(EmbeddedItemsMixin,
                                          serializers.Serializer):
              project_url = serializers.SerializerMethodField()
  
              class Meta:
                  fields = ('project_url',)
                  embedded_fields = ('project_url',)
  
              def get_project_url(self, obj):
                  return project_url
  
          test_serializer = SimpleEmbeddingSerializer({},
              include_embeds=True,
              context=context
          )
  
          data = json.loads(JSONRenderer().render(test_serializer.data))
          project_data = json.loads(JSONRenderer().render(project_serializer.data))
  
          self.assertEqual(data, {
              'project_url': project_url,
              '_embedded': {project_url: project_data}
          })
  
new_contents: import json
  
  from rest_framework import serializers
  from rest_framework.renderers import JSONRenderer
  
  from django.test.client import RequestFactory
  
  from editorsnotes.auth.models import Project
  
  from .views import ClearContentTypesTransactionTestCase
  from ..serializers.mixins import EmbeddedItemsMixin
  from ..serializers import ProjectSerializer
  
  
  class EmbeddingSerializerTestCase(ClearContentTypesTransactionTestCase):
      fixtures = ['projects.json']
  
      def setUp(self):
          factory = RequestFactory()
          self.dummy_request = factory.get('/')
  
      def test_has_embedded_project(self):
          context = {'request': self.dummy_request}
  
          project = Project.objects.get(slug='emma')
          project_url = self.dummy_request.build_absolute_uri(
              project.get_absolute_url())
          project_serializer = ProjectSerializer(
              instance=project, context=context)
  
          class SimpleEmbeddingSerializer(EmbeddedItemsMixin,
                                          serializers.Serializer):
              project_url = serializers.SerializerMethodField()
  
              class Meta:
                  fields = ('project_url',)
                  embedded_fields = ('project_url',)
  
              def get_project_url(self, obj):
                  return project_url
  
          test_serializer = SimpleEmbeddingSerializer({},
              include_embeds=True,
              context=context
          )
  
          data = json.loads(JSONRenderer().render(test_serializer.data))
          project_data = json.loads(JSONRenderer().render(project_serializer.data))
  
          self.assertEqual(data, {
              'project_url': project_url,
              '_embedded': {project_url: project_data}
          })
  
subject: Fix errant import