Fixed #21852 -- Make migration writer serialize iterators

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/migrations/test_writer.py b/tests/migrations/test_writer.py
index 8856e8fbb3..5934f8cf47 100644
--- a/tests/migrations/test_writer.py
+++ b/tests/migrations/test_writer.py
@@ -102,6 +102,13 @@ class WriterTests(TestCase):
                 set(["from django.conf import settings"]),
             )
         )
+        self.assertSerializedResultEqual(
+            ((x, x*x) for x in range(3)),
+            (
+                "((0, 0), (1, 1), (2, 4))",
+                set(),
+            )
+        )
 
     def test_simple_migration(self):
         """