Let's jsonify the Tag serializers - and let's work a little bit around with formatting

apps/rp/api/serializers.py

+import json
+
 from rest_framework import serializers
 
 from taggit.models import Tag
@@ -11,6 +13,9 @@ class TagListSerializer(serializers.ModelSerializer):
         model = Tag
         fields = ('name', )
 
+    def to_representation(self, value):
+        return json.dumps({'name': value.name})
+
 
 class ArticleSerializer(serializers.ModelSerializer):
     #: List of short tags to describe the article (eg. "Privacy", "Copyright")

apps/rp/tests/test_article.py

+import json
+
 from django.test import TestCase, Client
 from django.contrib.auth.models import User, Permission
 from rest_framework.test import APIClient
@@ -237,25 +239,26 @@ class TestArticleApi(TestCase):
         a = ArticleFactory(tags=['ZogZog'],)
         r = self.client.post('/api/articles/',
                              {'url': a.url, 'title': a.title,
-                              'tags': ','.join([t.name for t in a.tags.all()])
-                              })
+                              'tags': a.tags.all().values('name')},
+                             format='json')
         assert r.status_code == 401
 
     def test_api_tag_push_auth(self):
         self.client.force_login(user=self.user)
-        a = ArticleFactory(tags=['ZogZog'], status='NEW')
+        a = ArticleFactory(tags=['ZogZog', 'Blip Blop'], status='NEW')
         r = self.client.post('/api/articles/',
                              {'url': a.url, 'title': a.title,
-                              'tags': ','.join([t.name for t in a.tags.all()])
-                              })
+                              'tags': a.tags.all().values('name')},
+                             format='json')
         assert r.status_code == 201
+        assert list(a.tags.all().values('name')) == [json.loads(t) for t in r.data['tags']]
 
         # Need to test if we keep the tags
         r = self.client.post('/api/articles/',
                              {'url': a.url, 'title': a.title,
                               'tags': ''
                               })
-        assert [t.name for t in a.tags.all()] == [t['name'] for t in r.data['tags']]
+        assert list(a.tags.all().values('name')) == [json.loads(t) for t in r.data['tags']]
 
     def test_api_recover(self):
         # Can we recover if we're no Jedis