[4.2.x] Fixed #34470 -- Enforced UTF-8 encoding on PostgreSQL.

Regression in 6a2165816394ab4bb259f6171e82417e098e97a6.
Backport of 5b8a043bf51ab8bcf4a758d0b4646f30a84be183 from main

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/backends/postgresql/tests.py b/tests/backends/postgresql/tests.py
index 5589daa0c2..9c4512be24 100644
--- a/tests/backends/postgresql/tests.py
+++ b/tests/backends/postgresql/tests.py
@@ -323,6 +323,18 @@ class Tests(TestCase):
         finally:
             new_connection.close()
 
+    def test_client_encoding_utf8_enforce(self):
+        new_connection = connection.copy()
+        new_connection.settings_dict["OPTIONS"]["client_encoding"] = "iso-8859-2"
+        try:
+            new_connection.connect()
+            if is_psycopg3:
+                self.assertEqual(new_connection.connection.info.encoding, "utf-8")
+            else:
+                self.assertEqual(new_connection.connection.encoding, "UTF8")
+        finally:
+            new_connection.close()
+
     def _select(self, val):
         with connection.cursor() as cursor:
             cursor.execute("SELECT %s::text[]", (val,))