Refs #33308 -- Ensured type handlers are registered for all PostgreSQL specific tests.

Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>

tests/postgres_tests/test_apps.py

@@ -1,11 +1,12 @@
+import unittest
 from decimal import Decimal
 
+from django.db import connection
 from django.db.backends.signals import connection_created
 from django.db.migrations.writer import MigrationWriter
+from django.test import TestCase
 from django.test.utils import modify_settings
 
-from . import PostgreSQLTestCase
-
 try:
     from psycopg2.extras import DateRange, DateTimeRange, DateTimeTZRange, NumericRange
 
@@ -19,7 +20,8 @@ except ImportError:
     pass
 
 
-class PostgresConfigTests(PostgreSQLTestCase):
+@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific tests")
+class PostgresConfigTests(TestCase):
     def test_register_type_handlers_connection(self):
         from django.contrib.postgres.signals import register_type_handlers