Did test for category parent custom get_fields in Serializer
Did test for file categories custom get_fields filter in Serializer
Did test for news categories custom get_fields filter in Serializer
Did test for resource sites custom get_fields filter in Serializer
Did test for author restriction user and group custom get_fields filter in Serializer and closed #85
Merge pull request #95 from henriquecf/85-test-get-fields-in-serializers

85 test get fields in serializers