Out-of-tree certificate interferes ssltest

Hello.

003_sslinfo.pl fails for me.

ok 6 - ssl_client_cert_present() for connection with cert
connection error: 'psql: error: connection to server at "127.0.0.1", port 61688 failed: could not read certificate file
"/home/horiguti/.postgresql/postgresql.crt":no start line'
 
while running 'psql -XAtq -d sslrootcert=ssl/root+server_ca.crt sslmode=require dbname=trustdb hostaddr=127.0.0.1
user=ssltestuserhost=localhost -f - -v ON_ERR
 

I think we don't want this behavior.

The attached fixes that and make-world successfully finished even if I
have a cert file in my home direcotory.

regareds.

-- 
Kyotaro Horiguchi
NTT Open Source Software Center
From 308b55f06907ccaf4ac5669daacf04fea8a18fe1 Mon Sep 17 00:00:00 2001
From: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Date: Wed, 16 Mar 2022 16:20:46 +0900
Subject: [PATCH v1] Prevent out-of-tree certificates from interfering ssl
 tests

003_sslinfo.pl fails when there is a certificate file in ~/.postgresql
directory.  Prevent that failure by explicitly setting sslcert option
in connection string.
---
 src/test/ssl/t/003_sslinfo.pl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/test/ssl/t/003_sslinfo.pl b/src/test/ssl/t/003_sslinfo.pl
index 95742081f3..81da94f18d 100644
--- a/src/test/ssl/t/003_sslinfo.pl
+++ b/src/test/ssl/t/003_sslinfo.pl
@@ -93,7 +93,7 @@ $result = $node->safe_psql("certdb", "SELECT ssl_client_cert_present();",
 is($result, 't', "ssl_client_cert_present() for connection with cert");
 
 $result = $node->safe_psql("trustdb", "SELECT ssl_client_cert_present();",
-  connstr => "sslrootcert=ssl/root+server_ca.crt sslmode=require " .
+  connstr => "sslcert=invalid sslrootcert=ssl/root+server_ca.crt sslmode=require " .
   "dbname=trustdb hostaddr=$SERVERHOSTADDR user=ssltestuser host=localhost");
 is($result, 'f', "ssl_client_cert_present() for connection without cert");
 
@@ -108,7 +108,7 @@ $result = $node->psql("certdb", "SELECT ssl_client_dn_field('invalid');",
 is($result, '3', "ssl_client_dn_field() for an invalid field");
 
 $result = $node->safe_psql("trustdb", "SELECT ssl_client_dn_field('commonName');",
-  connstr => "sslrootcert=ssl/root+server_ca.crt sslmode=require " .
+  connstr => "sslcert=invalid sslrootcert=ssl/root+server_ca.crt sslmode=require " .
   "dbname=trustdb hostaddr=$SERVERHOSTADDR user=ssltestuser host=localhost");
 is($result, '', "ssl_client_dn_field() for connection without cert");
 
-- 
2.27.0