diff --git a/contrib/auto_explain/t/001_auto_explain.pl b/contrib/auto_explain/t/001_auto_explain.pl
index 80c0c19af58..25252604b7d 100644
--- a/contrib/auto_explain/t/001_auto_explain.pl
+++ b/contrib/auto_explain/t/001_auto_explain.pl
@@ -28,7 +28,7 @@ sub query_log
 }
 
 my $node = PostgreSQL::Test::Cluster->new('main');
-$node->init('auth_extra' => [ '--create-role' => 'regress_user1' ]);
+$node->init(auth_extra => [ '--create-role' => 'regress_user1' ]);
 $node->append_conf('postgresql.conf',
 	"session_preload_libraries = 'auto_explain'");
 $node->append_conf('postgresql.conf', "auto_explain.log_min_duration = 0");
diff --git a/contrib/basebackup_to_shell/t/001_basic.pl b/contrib/basebackup_to_shell/t/001_basic.pl
index 3ee4603bd3a..4d540147a6d 100644
--- a/contrib/basebackup_to_shell/t/001_basic.pl
+++ b/contrib/basebackup_to_shell/t/001_basic.pl
@@ -24,8 +24,8 @@ my $node = PostgreSQL::Test::Cluster->new('primary');
 # Make sure pg_hba.conf is set up to allow connections from backupuser.
 # This is only needed on Windows machines that don't use UNIX sockets.
 $node->init(
-	'allows_streaming' => 1,
-	'auth_extra' => [ '--create-role' => 'backupuser' ]);
+	allows_streaming => 1,
+	auth_extra => [ '--create-role' => 'backupuser' ]);
 
 $node->append_conf('postgresql.conf',
 	"shared_preload_libraries = 'basebackup_to_shell'");
diff --git a/src/bin/pg_basebackup/t/010_pg_basebackup.pl b/src/bin/pg_basebackup/t/010_pg_basebackup.pl
index 89ff26b6314..7cdd4442755 100644
--- a/src/bin/pg_basebackup/t/010_pg_basebackup.pl
+++ b/src/bin/pg_basebackup/t/010_pg_basebackup.pl
@@ -470,7 +470,7 @@ SKIP:
 	$node2->init_from_backup(
 		$node, 'tarbackup2',
 		tar_program => $tar,
-		'tablespace_map' => { $tblspcoid => $realRepTsDir });
+		tablespace_map => { $tblspcoid => $realRepTsDir });
 
 	$node2->start;
 	my $result = $node2->safe_psql('postgres', 'SELECT * FROM test1');
diff --git a/src/bin/pg_basebackup/t/011_in_place_tablespace.pl b/src/bin/pg_basebackup/t/011_in_place_tablespace.pl
index 9e53dada4fa..ec942e54eee 100644
--- a/src/bin/pg_basebackup/t/011_in_place_tablespace.pl
+++ b/src/bin/pg_basebackup/t/011_in_place_tablespace.pl
@@ -17,7 +17,7 @@ my @pg_basebackup_defs =
 
 # Set up an instance.
 my $node = PostgreSQL::Test::Cluster->new('main');
-$node->init('allows_streaming' => 1);
+$node->init(allows_streaming => 1);
 $node->start();
 
 # Create an in-place tablespace.
diff --git a/src/bin/pg_combinebackup/t/008_promote.pl b/src/bin/pg_combinebackup/t/008_promote.pl
index 732f6397103..3a15983f4a1 100644
--- a/src/bin/pg_combinebackup/t/008_promote.pl
+++ b/src/bin/pg_combinebackup/t/008_promote.pl
@@ -52,7 +52,7 @@ EOM
 # then stop recovery at some arbitrary LSN, not just when it hits the end of
 # WAL, so use a recovery target.
 my $node2 = PostgreSQL::Test::Cluster->new('node2');
-$node2->init_from_backup($node1, 'backup1', 'has_streaming' => 1);
+$node2->init_from_backup($node1, 'backup1', has_streaming => 1);
 $node2->append_conf('postgresql.conf', <<EOM);
 recovery_target_lsn = '$lsn'
 recovery_target_action = 'pause'
diff --git a/src/test/modules/test_pg_dump/t/001_base.pl b/src/test/modules/test_pg_dump/t/001_base.pl
index 7116e5b8df6..a9bcac4169d 100644
--- a/src/test/modules/test_pg_dump/t/001_base.pl
+++ b/src/test/modules/test_pg_dump/t/001_base.pl
@@ -869,7 +869,7 @@ my %tests = (
 # Create a PG instance to test actually dumping from
 
 my $node = PostgreSQL::Test::Cluster->new('main');
-$node->init('auth_extra' => [ '--create-role' => 'regress_dump_login_role' ]);
+$node->init(auth_extra => [ '--create-role' => 'regress_dump_login_role' ]);
 $node->start;
 
 my $port = $node->port;
diff --git a/src/test/perl/PostgreSQL/Test/Cluster.pm b/src/test/perl/PostgreSQL/Test/Cluster.pm
index 0750915a9a8..bab3f3d2dbe 100644
--- a/src/test/perl/PostgreSQL/Test/Cluster.pm
+++ b/src/test/perl/PostgreSQL/Test/Cluster.pm
@@ -1019,7 +1019,7 @@ sub init_from_backup
 		PostgreSQL::Test::RecursiveCopy::copypath(
 			$backup_path,
 			$data_path,
-			'filterfn' => sub {
+			filterfn => sub {
 				my ($path) = @_;
 				if ($path =~ /^pg_tblspc\/(\d+)$/
 					&& exists $params{tablespace_map}{$1})
diff --git a/src/test/postmaster/t/002_connection_limits.pl b/src/test/postmaster/t/002_connection_limits.pl
index 85f5ef03dec..325a00efd47 100644
--- a/src/test/postmaster/t/002_connection_limits.pl
+++ b/src/test/postmaster/t/002_connection_limits.pl
@@ -13,7 +13,7 @@ use Test::More;
 # Initialize the server with specific low connection limits
 my $node = PostgreSQL::Test::Cluster->new('primary');
 $node->init(
-	'auth_extra' => [
+	auth_extra => [
 		'--create-role' =>
 		  'regress_regular,regress_reserved,regress_superuser',
 	]);
diff --git a/src/test/ssl/t/002_scram.pl b/src/test/ssl/t/002_scram.pl
index fffc51f4047..9e4947f4e3c 100644
--- a/src/test/ssl/t/002_scram.pl
+++ b/src/test/ssl/t/002_scram.pl
@@ -71,8 +71,8 @@ my $md5_works = ($node->psql('postgres', "select md5('')") == 0);
 $ssl_server->configure_test_server_for_ssl(
 	$node, $SERVERHOSTADDR, $SERVERHOSTCIDR,
 	"scram-sha-256",
-	'password' => "pass",
-	'password_enc' => "scram-sha-256");
+	password => "pass",
+	password_enc => "scram-sha-256");
 switch_server_cert($node, certfile => 'server-cn-only');
 $ENV{PGPASSWORD} = "pass";
 $common_connstr =
diff --git a/src/test/ssl/t/003_sslinfo.pl b/src/test/ssl/t/003_sslinfo.pl
index b9eae8d641b..3c756489cdf 100644
--- a/src/test/ssl/t/003_sslinfo.pl
+++ b/src/test/ssl/t/003_sslinfo.pl
@@ -186,9 +186,8 @@ foreach my $c (@cases)
 	$result = $node->safe_psql(
 		"trustdb",
 		"SELECT ssl_client_cert_present();",
-		connstr => "$common_connstr dbname=trustdb $c->{'opts'}");
-	is($result, $c->{'present'},
-		"ssl_client_cert_present() for $c->{'opts'}");
+		connstr => "$common_connstr dbname=trustdb $c->{opts}");
+	is($result, $c->{present}, "ssl_client_cert_present() for $c->{opts}");
 }
 
 done_testing();