v1-0002-Add-test-for-resetting-recovery_prefetch-shared-s.patch

From 71bcf31a76e56502086e5b60cfbfba5e9c64cb23 Mon Sep 17 00:00:00 2001
From: Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>
Date: Mon, 30 Oct 2023 06:27:11 +0000
Subject: [PATCH v1] Add test for resetting recovery_prefetch shared stats

This commit adds test for resetting recovery_prefetch shared stats
to help with the code coverage of XLogPrefetchResetStats().
---
 src/test/regress/expected/stats.out | 21 +++++++++++++++++++++
 src/test/regress/sql/stats.sql      |  7 +++++++
 2 files changed, 28 insertions(+)

diff --git a/src/test/regress/expected/stats.out b/src/test/regress/expected/stats.out
index 53b632dcd3..65997334be 100644
--- a/src/test/regress/expected/stats.out
+++ b/src/test/regress/expected/stats.out
@@ -960,6 +960,21 @@ SELECT stats_reset > :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
 (1 row)
 
 SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
+-- Test that reset_shared with recovery_prefetch specified as the stats type works
+SELECT stats_reset AS recovery_prefetch_reset_ts FROM pg_stat_recovery_prefetch \gset
+SELECT pg_stat_reset_shared('recovery_prefetch');
+ pg_stat_reset_shared 
+----------------------
+ 
+(1 row)
+
+SELECT stats_reset > :'recovery_prefetch_reset_ts'::timestamptz FROM pg_stat_recovery_prefetch;
+ ?column? 
+----------
+ t
+(1 row)
+
+SELECT stats_reset AS recovery_prefetch_reset_ts FROM pg_stat_recovery_prefetch \gset
 -- Test that reset_shared with no specified stats type doesn't reset anything
 SELECT pg_stat_reset_shared(NULL);
  pg_stat_reset_shared 
@@ -991,6 +1006,12 @@ SELECT stats_reset = :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
  t
 (1 row)
 
+SELECT stats_reset = :'recovery_prefetch_reset_ts'::timestamptz FROM pg_stat_recovery_prefetch;
+ ?column? 
+----------
+ t
+(1 row)
+
 -- Test error case for reset_shared with unknown stats type
 SELECT pg_stat_reset_shared('unknown');
 ERROR:  unrecognized reset target: "unknown"
diff --git a/src/test/regress/sql/stats.sql b/src/test/regress/sql/stats.sql
index febb83add0..498e32de7a 100644
--- a/src/test/regress/sql/stats.sql
+++ b/src/test/regress/sql/stats.sql
@@ -482,12 +482,19 @@ SELECT pg_stat_reset_shared('wal');
 SELECT stats_reset > :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
 SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
 
+-- Test that reset_shared with recovery_prefetch specified as the stats type works
+SELECT stats_reset AS recovery_prefetch_reset_ts FROM pg_stat_recovery_prefetch \gset
+SELECT pg_stat_reset_shared('recovery_prefetch');
+SELECT stats_reset > :'recovery_prefetch_reset_ts'::timestamptz FROM pg_stat_recovery_prefetch;
+SELECT stats_reset AS recovery_prefetch_reset_ts FROM pg_stat_recovery_prefetch \gset
+
 -- Test that reset_shared with no specified stats type doesn't reset anything
 SELECT pg_stat_reset_shared(NULL);
 SELECT stats_reset = :'archiver_reset_ts'::timestamptz FROM pg_stat_archiver;
 SELECT stats_reset = :'bgwriter_reset_ts'::timestamptz FROM pg_stat_bgwriter;
 SELECT stats_reset = :'checkpointer_reset_ts'::timestamptz FROM pg_stat_checkpointer;
 SELECT stats_reset = :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
+SELECT stats_reset = :'recovery_prefetch_reset_ts'::timestamptz FROM pg_stat_recovery_prefetch;
 
 -- Test error case for reset_shared with unknown stats type
 SELECT pg_stat_reset_shared('unknown');
-- 
2.34.1