t/ds-leak: use BSD::Resource

We use BSD::Resource in other places, so there's no sense
in avoiding it, here.

diff --git a/t/ds-leak.t b/t/ds-leak.t
index ea0eeaa651b06eb4e0636f4ba8d74cd440d73c57..b29d814ee06395b49c9642bc3a0c98e7bdfeab33 100644 (file)
--- a/t/ds-leak.t
+++ b/t/ds-leak.t
@@ -6,6 +6,7 @@
 use strict;
 use warnings;
 use Test::More;
+use PublicInbox::TestCommon;
 use_ok 'PublicInbox::DS';
 
 if ('close-on-exec for epoll and kqueue') {
@@ -44,8 +45,9 @@ if ('close-on-exec for epoll and kqueue') {
 }
 
 SKIP: {
-       # not bothering with BSD::Resource
-       chomp(my $n = `/bin/sh -c 'ulimit -n'`);
+       require_mods('BSD::Resource', 1);
+       my $rlim = BSD::Resource::RLIMIT_NOFILE();
+       my ($n,undef) = BSD::Resource::getrlimit($rlim);
 
        # FreeBSD 11.2 with 2GB RAM gives RLIMIT_NOFILE=57987!
        if ($n > 1024 && !$ENV{TEST_EXPENSIVE}) {