Refs #27996 -- Skipped RandomUUID test on PostgreSQL 9.3.

tests/postgres_tests/__init__.py

@@ -7,6 +7,16 @@ from django.db.backends.signals import connection_created
 from django.test import TestCase, modify_settings
 
 
+def skipUnlessPG94(test):
+    try:
+        PG_VERSION = connection.pg_version
+    except AttributeError:
+        PG_VERSION = 0
+    if PG_VERSION < 90400:
+        return unittest.skip('PostgreSQL ≥ 9.4 required')(test)
+    return test
+
+
 @unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific tests")
 class PostgreSQLTestCase(TestCase):
     @classmethod