tests: maintainer test for using mpop

This ought to be a good stress test to ensure our POP3
implementation works against the POP3 client I've found.

1 files changed, 77 insertions, 0 deletions

diff --git a/xt/pop3d-mpop.t b/xt/pop3d-mpop.t
new file mode 100644
index 00000000..8648b953
--- /dev/null
+++ b/xt/pop3d-mpop.t
@@ -0,0 +1,77 @@
+#!perl -w
+# Copyright (C) all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+# ensure mpop compatibility
+use v5.12;
+use File::Path qw(make_path);
+use PublicInbox::TestCommon;
+use PublicInbox::Spawn qw(which spawn);
+my $inboxdir = $ENV{GIANT_INBOX_DIR};
+(defined($inboxdir) && -d $inboxdir) or
+        plan skip_all => "GIANT_INBOX_DIR not defined for $0";
+plan skip_all => "bad characters in $inboxdir" if $inboxdir =~ m![^\w\.\-/]!;
+my $uuidgen = which('uuidgen') or plan skip_all => 'uuidgen(1) missing';
+require_mods(qw(DBD::SQLite));
+require_git('2.6'); # for v2
+require_mods(qw(File::FcntlLock)) if $^O !~ /\A(?:linux|freebsd)\z/;
+
+my ($tmpdir, $for_destroy) = tmpdir();
+my $cfg = "$tmpdir/cfg";
+my $newsgroup = 'inbox.test';
+my %pids;
+{
+        open my $fh, '>', $cfg or xbail "open: $!";
+        print $fh <<EOF or xbail "print: $!";
+[publicinbox]
+        pop3state = $tmpdir/p3s
+[publicinbox "test"]
+        newsgroup = $newsgroup
+        address = mpop-test\@example.com
+        inboxdir = $inboxdir
+EOF
+        close $fh or xbail "close: $!";
+}
+my ($out, $err) = ("$tmpdir/stdout.log", "$tmpdir/stderr.log");
+my $sock = tcp_server();
+my $cmd = [ '-pop3d', '-W0', "--stdout=$out", "--stderr=$err" ];
+my $env = { PI_CONFIG => $cfg };
+my $td = start_script($cmd, $env, { 3 => $sock }) or xbail "-xbail $?";
+chomp(my $uuid = xqx([$uuidgen]));
+
+make_path("$tmpdir/home/.config/mpop",
+        map { "$tmpdir/md/$_" } qw(new cur tmp));
+
+SKIP: {
+        my $mpop = which('mpop') or skip('mpop(1) missing', 1);
+        open my $fh, '>', "$tmpdir/home/.config/mpop/config"
+                or xbail "open $!";
+        chmod 0600, $fh;
+        print $fh <<EOM or xbail "print $!";
+defaults
+tls off
+delivery maildir $tmpdir/md
+account default
+host ${\$sock->sockhost}
+port ${\$sock->sockport}
+user $uuid\@$newsgroup
+auth user
+password anonymous
+received_header off
+EOM
+        close $fh or xbail "close $!";
+        delete local $ENV{XDG_CONFIG_HOME}; # mpop uses this
+        local $ENV{HOME} = "$tmpdir/home";
+        my $cmd = [ $mpop, '-q' ];
+        my $pid = spawn($cmd, undef, { 1 => 2 });
+        $pids{$pid} = $cmd;
+}
+
+while (scalar keys %pids) {
+        my $pid = waitpid(-1, 0) or next;
+        my $cmd = delete $pids{$pid} or next;
+        is($?, 0, join(' ', @$cmd, 'done'));
+}
+$td->kill;
+$td->join;
+is($?, 0, 'no error on -pop3d exit');
+done_testing;