+ lei_ok(qw(ls-mail-source), "imap://$host_port/");
+ like($lei_out, qr/^t\.v2\.0$/ms, 'shows mailbox');
+ lei_ok(qw(ls-mail-source), $url);
+ is($lei_out, "t.v2.0\n", 'shows only mailbox with filter');
+ lei_ok(qw(ls-mail-source -l), "imap://$host_port/");
+ is(ref(json_utf8->decode($lei_out)), 'ARRAY', 'ls-mail-source JSON');