Fixed #32812 -- Restored immutability of named values from QuerySet.values_list().

Regression in 981a072dd4dec586f8fc606712ed9a2ef116eeee.

Thanks pirelle for the report.

2 files changed, 10 insertions, 0 deletions

diff --git a/tests/model_utils/__init__.py b/tests/model_utils/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/tests/model_utils/__init__.py
diff --git a/tests/model_utils/tests.py b/tests/model_utils/tests.py
new file mode 100644
index 0000000000..be4dd4300b
--- /dev/null
+++ b/tests/model_utils/tests.py
@@ -0,0 +1,10 @@
+from django.db.models.utils import create_namedtuple_class
+from django.test import SimpleTestCase
+
+
+class NamedTupleClassTests(SimpleTestCase):
+    def test_immutability(self):
+        row_class = create_namedtuple_class('field1', 'field2')
+        row = row_class('value1', 'value2')
+        with self.assertRaises(AttributeError):
+            row.field3 = 'value3'