From 57839c7664c608ea8bf3bc9fa1132f29656a9e65 Mon Sep 17 00:00:00 2001
From: Diego Fronza <diego.fronza@percona.com>
Date: Tue, 21 Dec 2021 11:06:06 -0300
Subject: [PATCH] PG-295: Fix top_query regression test.

The issue is that between changing GUC "track" from track='top' to
track='all' the queries are executing using previous state of
track='top', to fix that we sleep 1 second after calling
pg_reload_conf() to ensure that queries will run with new settings.
---
 regression/expected/top_query.out   | 12 ++++++++++++
 regression/expected/top_query_1.out | 12 ++++++++++++
 regression/sql/top_query.sql        |  2 ++
 3 files changed, 26 insertions(+)

diff --git a/regression/expected/top_query.out b/regression/expected/top_query.out
index e980297..6b118ff 100644
--- a/regression/expected/top_query.out
+++ b/regression/expected/top_query.out
@@ -48,6 +48,12 @@ SELECT pg_reload_conf();
  t
 (1 row)
 
+SELECT pg_sleep(1);
+ pg_sleep 
+----------
+ 
+(1 row)
+
 SELECT pg_stat_monitor_reset();
  pg_stat_monitor_reset 
 -----------------------
@@ -98,6 +104,12 @@ SELECT pg_reload_conf();
  t
 (1 row)
 
+SELECT pg_sleep(1);
+ pg_sleep 
+----------
+ 
+(1 row)
+
 SELECT pg_stat_monitor_reset();
  pg_stat_monitor_reset 
 -----------------------
diff --git a/regression/expected/top_query_1.out b/regression/expected/top_query_1.out
index 59a19e5..a98455b 100644
--- a/regression/expected/top_query_1.out
+++ b/regression/expected/top_query_1.out
@@ -48,6 +48,12 @@ SELECT pg_reload_conf();
  t
 (1 row)
 
+SELECT pg_sleep(1);
+ pg_sleep 
+----------
+ 
+(1 row)
+
 SELECT pg_stat_monitor_reset();
  pg_stat_monitor_reset 
 -----------------------
@@ -98,6 +104,12 @@ SELECT pg_reload_conf();
  t
 (1 row)
 
+SELECT pg_sleep(1);
+ pg_sleep 
+----------
+ 
+(1 row)
+
 SELECT pg_stat_monitor_reset();
  pg_stat_monitor_reset 
 -----------------------
diff --git a/regression/sql/top_query.sql b/regression/sql/top_query.sql
index 16aa2ce..b25ca05 100644
--- a/regression/sql/top_query.sql
+++ b/regression/sql/top_query.sql
@@ -19,6 +19,7 @@ SELECT query, top_query FROM pg_stat_monitor ORDER BY query COLLATE "C";
 
 ALTER SYSTEM SET pg_stat_monitor.track TO 'all';
 SELECT pg_reload_conf();
+SELECT pg_sleep(1);
 SELECT pg_stat_monitor_reset();
 
 CREATE OR REPLACE FUNCTION add(int, int) RETURNS INTEGER AS
@@ -38,6 +39,7 @@ SELECT add2(1,2);
 SELECT query, top_query FROM pg_stat_monitor ORDER BY query COLLATE "C";
 ALTER SYSTEM SET pg_stat_monitor.track TO 'top';
 SELECT pg_reload_conf();
+SELECT pg_sleep(1);
 SELECT pg_stat_monitor_reset();
 
 DROP EXTENSION pg_stat_monitor;