Fixed creation of objects with reversed M2M relations

1 files changed, 18 insertions, 0 deletions

diff --git a/rest_framework/tests/pk_relations.py b/rest_framework/tests/pk_relations.py
index 94709810..44ae4040 100644
--- a/rest_framework/tests/pk_relations.py
+++ b/rest_framework/tests/pk_relations.py
@@ -117,6 +117,24 @@ class PrimaryKeyManyToManyTests(TestCase):
         ]
         self.assertEquals(serializer.data, expected)
 
+    def test_reverse_many_to_many_create(self):
+        data = {'id': 4, 'name': u'target-4', 'sources': [1, 3]}
+        serializer = ManyToManyTargetSerializer(data=data)
+        self.assertTrue(serializer.is_valid())
+        obj = serializer.save()
+        self.assertEquals(serializer.data, data)
+        self.assertEqual(obj.name, u'target-4')
+
+        # Ensure target 4 is added, and everything else is as expected
+        queryset = ManyToManyTarget.objects.all()
+        serializer = ManyToManyTargetSerializer(queryset)
+        expected = [
+            {'id': 1, 'name': u'target-1', 'sources': [1, 2, 3]},
+            {'id': 2, 'name': u'target-2', 'sources': [2, 3]},
+            {'id': 3, 'name': u'target-3', 'sources': [3]},
+            {'id': 4, 'name': u'target-4', 'sources': [1, 3]}
+        ]
+        self.assertEquals(serializer.data, expected)
 
 class PrimaryKeyForeignKeyTests(TestCase):
     def setUp(self):