From 53bf84b584c49528770899ec760f948956ea4dae Mon Sep 17 00:00:00 2001
From: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: Fri, 5 Aug 2022 14:25:56 +0200
Subject: [PATCH v3 1/2] add test

---
 src/test/modules/brin/Makefile                |  2 +-
 src/test/modules/brin/t/02_wal_consistency.pl | 75 +++++++++++++++++++
 2 files changed, 76 insertions(+), 1 deletion(-)
 create mode 100644 src/test/modules/brin/t/02_wal_consistency.pl

diff --git a/src/test/modules/brin/Makefile b/src/test/modules/brin/Makefile
index c871593906..e74af891ce 100644
--- a/src/test/modules/brin/Makefile
+++ b/src/test/modules/brin/Makefile
@@ -1,6 +1,6 @@
 # src/test/modules/brin/Makefile
 
-EXTRA_INSTALL = contrib/pageinspect
+EXTRA_INSTALL = contrib/pageinspect contrib/pg_walinspect
 
 ISOLATION = summarization-and-inprogress-insertion
 TAP_TESTS = 1
diff --git a/src/test/modules/brin/t/02_wal_consistency.pl b/src/test/modules/brin/t/02_wal_consistency.pl
new file mode 100644
index 0000000000..0a32809f0d
--- /dev/null
+++ b/src/test/modules/brin/t/02_wal_consistency.pl
@@ -0,0 +1,75 @@
+# Copyright (c) 2021-2022, PostgreSQL Global Development Group
+
+# Verify WAL consistency
+
+use strict;
+use warnings;
+
+use PostgreSQL::Test::Utils;
+use Test::More;
+use PostgreSQL::Test::Cluster;
+
+# Set up primary
+my $whiskey = PostgreSQL::Test::Cluster->new('whiskey');
+$whiskey->init(allows_streaming => 1);
+$whiskey->append_conf('postgresql.conf', 'wal_consistency_checking = brin');
+$whiskey->start;
+$whiskey->safe_psql('postgres', 'create extension pageinspect');
+$whiskey->safe_psql('postgres', 'create extension pg_walinspect');
+is( $whiskey->psql(
+		'postgres',
+		qq[SELECT pg_create_physical_replication_slot('standby_1');]),
+	0,
+	'physical slot created on primary');
+
+# Take backup
+my $backup_name = 'brinbkp';
+$whiskey->backup($backup_name);
+
+# Create streaming standby linking to primary
+my $charlie = PostgreSQL::Test::Cluster->new('charlie');
+$charlie->init_from_backup($whiskey, $backup_name, has_streaming => 1);
+$charlie->append_conf('postgresql.conf', 'primary_slot_name = standby_1');
+$charlie->start;
+
+# Now write some WAL in the primary
+
+$whiskey->safe_psql(
+	'postgres', qq{
+create table tbl_timestamp0 (d1 timestamp(0) without time zone) with (fillfactor=10);
+create index on tbl_timestamp0 using brin (d1) with (pages_per_range = 1, autosummarize=false);
+});
+my $start_lsn = $whiskey->lsn('insert');
+# Run a loop that will end when the second revmap page is created
+$whiskey->safe_psql(
+	'postgres', q{
+do 
+$$
+declare
+  current timestamp with time zone := '2019-03-27 08:14:01.123456789 America/Punta_Arenas';
+begin
+  loop
+    insert into tbl_timestamp0 select i from
+      generate_series(current, current + interval '1 day', '28 seconds') i;
+    perform brin_summarize_new_values('tbl_timestamp0_d1_idx');
+    if (brin_metapage_info(get_raw_page('tbl_timestamp0_d1_idx', 0))).lastrevmappage > 1 then
+      exit;
+    end if;
+    current := current + interval '1 day';
+  end loop;
+end
+$$;
+});
+my $end_lsn = $whiskey->lsn('insert');
+
+my ($ret, $out, $err) = $whiskey->psql(
+	'postgres', qq{
+	select count(*) from pg_get_wal_records_info('$start_lsn', '$end_lsn')
+	where resource_manager = 'BRIN' AND
+	record_type ILIKE '%revmap%'
+	});
+cmp_ok($out, '>=', 1);
+
+$whiskey->wait_for_catchup($charlie, 'replay', $whiskey->lsn('insert'));
+
+done_testing();
-- 
2.30.2