Ensure bulk_create returns the right value if the argument is an empty list.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16792 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/models/query.py

@@ -372,7 +372,7 @@ class QuerySet(object):
         if self.model._meta.parents:
             raise ValueError("Can't bulk create an inherited model")
         if not objs:
-            return
+            return objs
         self._for_write = True
         connection = connections[self.db]
         fields = self.model._meta.local_fields

tests/regressiontests/bulk_create/tests.py

@@ -23,6 +23,10 @@ class BulkCreateTests(TestCase):
             "United States of America", "The Netherlands", "Germany", "Czech Republic"
         ], attrgetter("name"))
 
+        created = Country.objects.bulk_create([])
+        self.assertEqual(created, [])
+        self.assertEqual(Country.objects.count(), 4)
+
     @skipUnlessDBFeature("has_bulk_insert")
     def test_efficiency(self):
         with self.assertNumQueries(1):