[1.9.x] Fixed #26215 -- Fixed RangeField/ArrayField serialization with None values

Also added tests for HStoreField and JSONField.
Thanks Aleksey Bukin for the report and Tim Graham for the initial patch and
the review.
Backport of 928c12eb1 from master.

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/postgres_tests/test_array.py b/tests/postgres_tests/test_array.py
index 094a1e2235..fe9c477d4b 100644
--- a/tests/postgres_tests/test_array.py
+++ b/tests/postgres_tests/test_array.py
@@ -462,17 +462,17 @@ class TestMigrations(TransactionTestCase):
 
 class TestSerialization(PostgreSQLTestCase):
     test_data = (
-        '[{"fields": {"field": "[\\"1\\", \\"2\\"]"}, "model": "postgres_tests.integerarraymodel", "pk": null}]'
+        '[{"fields": {"field": "[\\"1\\", \\"2\\", null]"}, "model": "postgres_tests.integerarraymodel", "pk": null}]'
     )
 
     def test_dumping(self):
-        instance = IntegerArrayModel(field=[1, 2])
+        instance = IntegerArrayModel(field=[1, 2, None])
         data = serializers.serialize('json', [instance])
         self.assertEqual(json.loads(data), json.loads(self.test_data))
 
     def test_loading(self):
         instance = list(serializers.deserialize('json', self.test_data))[0].object
-        self.assertEqual(instance.field, [1, 2])
+        self.assertEqual(instance.field, [1, 2, None])
 
 
 class TestValidation(PostgreSQLTestCase):