          return RENDERER_B_SERIALIZER(data)
  
  
  class MockView(APIView):
      renderer_classes = (RendererA, RendererB)
  
      def get(self, request, **kwargs):
          return Response(DUMMYCONTENT, status=DUMMYSTATUS)
  
  
 
</s> remove         request.accepted_renderer, request.accepted_media_type = neg
 </s> add         renderer, media_type, charset = neg
        request.accepted_renderer = renderer
        request.accepted_media_type = media_type
        request.accepted_charset = charset </s> remove 
class MockHTMLRenderer(object):
 </s> add class MockHTMLRenderer(BaseRenderer): </s> remove         accepted_renderer, accepted_media_type = self.select_renderer(request)
 </s> add         accepted_renderer, accepted_media_type, charset = self.select_renderer(request)
    renderer_classes = (RendererA, RendererB, RendererC)
          return RENDERER_B_SERIALIZER(data)
  
  
  class MockView(APIView):
    renderer_classes = (RendererA, RendererB, RendererC)
  
      def get(self, request, **kwargs):
          return Response(DUMMYCONTENT, status=DUMMYSTATUS)
  
  
keep keep keep keep replace keep keep keep keep keep
 charset param gets now appended to response's Content-Type. Closes #807 
rest_framework/tests/response.py