use Mail::Cclient;
print "1..4\n";
print "ok 1\n";
my $pwd = `pwd`;
chomp($pwd);
my $mailbox = "$pwd/testmbx/test.mbox";
my $c = Mail::Cclient->new($mailbox, 'readonly') or print "not ";
print "ok 2\n";
$c->thread(
THREADING => "references",
SEARCH => "ALL",
FLAG => "uid") or print "not ";
print "ok 3\n";
$c->close();
print "ok 4\n";
undef($c);