1 files changed, 30 insertions, 1 deletions
diff --git a/rest_framework/tests/serializer.py b/rest_framework/tests/serializer.py
index 220a581a..fd6cf6da 100644
--- a/rest_framework/tests/serializer.py
+++ b/rest_framework/tests/serializer.py
@@ -1,8 +1,9 @@
 from __future__ import unicode_literals
 from django.db import models
 from django.db.models.fields import BLANK_CHOICE_DASH
-from django.utils.datastructures import MultiValueDict
 from django.test import TestCase
+from django.utils.datastructures import MultiValueDict
+from django.utils.translation import ugettext_lazy as _
 from rest_framework import serializers
 from rest_framework.tests.models import (HasPositiveIntegerAsChoice, Album, ActionItem, Anchor, BasicModel,
     BlankFieldModel, BlogPost, BlogPostComment, Book, CallableDefaultValueModel, DefaultValueModel,
@@ -1323,6 +1324,34 @@ class DeserializeListTestCase(TestCase):
         self.assertEqual(serializer.errors, expected)
 
 
+# test for issue 747
+
+
+class LazyStringModel(object):
+    def __init__(self, lazystring):
+        self.lazystring = lazystring
+
+
+class LazyStringSerializer(serializers.Serializer):
+    lazystring = serializers.Field()
+
+    def restore_object(self, attrs, instance=None):
+        if instance is not None:
+            instance.lazystring = attrs.get('lazystring', instance.lazystring)
+            return instance
+        return LazyStringModel(**attrs)
+
+
+class LazyStringsTestCase(TestCase):
+    def setUp(self):
+        self.model = LazyStringModel(lazystring=_('lazystring'))
+
+    def test_lazy_strings_are_translated(self):
+        serializer = LazyStringSerializer(self.model)
+        self.assertEqual(type(serializer.data['lazystring']),
+                         type('lazystring'))
+
+
 class AttributeMappingOnAutogeneratedFieldsTests(TestCase):
 
     def setUp(self):