Added test_ugettext_lazy test. Refs #87.

djangorestframework/tests/serializer.py

 """Tests for the resource module"""
+from django.db import models
 from django.test import TestCase
+from django.utils.translation import ugettext_lazy
 from djangorestframework.serializer import Serializer
 
-from django.db import models
-
 import datetime
 import decimal
 
@@ -44,6 +44,9 @@ class TestObjectToData(TestCase):
         self.assertEquals(self.serialize({'keys': 'foo'}), {'keys': u'foo'})
         self.assertEquals(self.serialize({'values': 'foo'}), {'values': u'foo'})
 
+    def test_ugettext_lazy(self):
+        self.assertEquals(self.serialize(ugettext_lazy('foobar')), u'foobar')
+
 
 class TestFieldNesting(TestCase):
     """