From 9fe0d712b3d5260b6ef39d5d3afca575b08514e1 Mon Sep 17 00:00:00 2001
From: Rahila Syed <rahilasyed.90@gmail.com>
Date: Thu, 11 Sep 2025 11:56:21 +0530
Subject: [PATCH] Add a test for a disabled GUC check for parallel workers

---
 .../modules/test_misc/t/009_guc_validation.pl | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 src/test/modules/test_misc/t/009_guc_validation.pl

diff --git a/src/test/modules/test_misc/t/009_guc_validation.pl b/src/test/modules/test_misc/t/009_guc_validation.pl
new file mode 100644
index 00000000000..6d7421e414a
--- /dev/null
+++ b/src/test/modules/test_misc/t/009_guc_validation.pl
@@ -0,0 +1,29 @@
+
+# Copyright (c) 2024-2025, PostgreSQL Global Development Group
+
+# Tests to cross-check the consistency of GUC parameters with
+# postgresql.conf.sample.
+
+use strict;
+use warnings FATAL => 'all';
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+use Test::More;
+
+my $psql_err;
+my $node = PostgreSQL::Test::Cluster->new('main');
+$node->init;
+$node->append_conf('postgresql.conf', "synchronized_standby_slots = missing");
+# Node starts with invalid synchronized_standby_slots
+$node->start;
+
+# Should not throw an error when parallel worker starts up.
+
+my $parallel_worker_scan = $node->psql(
+        'postgres', qq( SET min_parallel_table_scan_size TO 0;                                                                                               SET parallel_setup_cost TO 0;
+         SET parallel_tuple_cost TO 0;
+    SELECT * from pg_namespace;),  stderr => \$psql_err);
+
+like ( $psql_err,
+        qr//);
+done_testing();
-- 
2.34.1