[5.0.x] Fixed #34992 -- Fixed DatabaseFeatures.allows_group_by_selected_pks on MariaDB with ONLY_FULL_GROUP_BY sql mode.

Regression in 041551d716b69ee7c81199eee86a2d10a72e15ab.

Backport of 0257426fe1fe9d146fd5813f09d909917ff59360 from main

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/backends/mysql/test_features.py b/tests/backends/mysql/test_features.py
index 96e1ed3b49..4e5c7c294f 100644
--- a/tests/backends/mysql/test_features.py
+++ b/tests/backends/mysql/test_features.py
@@ -28,3 +28,21 @@ class TestFeatures(TestCase):
             _connection.sql_mode = {"NO_AUTO_VALUE_ON_ZERO"}
             database_features = DatabaseFeatures(_connection)
             self.assertIs(database_features.allows_auto_pk_0, True)
+
+    def test_allows_group_by_selected_pks(self):
+        with mock.MagicMock() as _connection:
+            _connection.mysql_is_mariadb = False
+            database_features = DatabaseFeatures(_connection)
+            self.assertIs(database_features.allows_group_by_selected_pks, True)
+
+        with mock.MagicMock() as _connection:
+            _connection.mysql_is_mariadb = False
+            _connection.sql_mode = {}
+            database_features = DatabaseFeatures(_connection)
+            self.assertIs(database_features.allows_group_by_selected_pks, True)
+
+        with mock.MagicMock() as _connection:
+            _connection.mysql_is_mariadb = True
+            _connection.sql_mode = {"ONLY_FULL_GROUP_BY"}
+            database_features = DatabaseFeatures(_connection)
+            self.assertIs(database_features.allows_group_by_selected_pks, False)