1#!/usr/bin/perl -w
2# -*- perl -*-
3
4#
5# $Id: $
6# Author: Slaven Rezic
7#
8
9use strict;
10
11use Config qw(%Config);
12
13BEGIN {
14    if (!eval q{
15	use Test::More;
16	1;
17    }) {
18	print "1..0 # skip no Test::More module\n";
19	exit;
20    }
21}
22
23BEGIN {
24    if (!defined $Config{sig_name}) {
25	print "1..0 # skip No signals on this system?\n";
26	exit;
27    }
28    if ($Config{sig_name} !~ m{\bUSR2\b}) {
29	print "1..0 # skip signal USR2 is not available on this system\n";
30	exit;
31    }
32}
33
34use Tk;
35
36plan tests => 1;
37
38my $caught_USR2 = 0;
39$SIG{USR2} = sub { $caught_USR2++ };
40
41my $mw = tkinit;
42$mw->geometry("+0+0");
43$mw->Label(-text => "Waiting for USR2 signals...")->pack;
44$mw->idletasks;
45
46my $ppid = $$;
47if (fork == 0) {
48    kill USR2 => $ppid;
49    select undef,undef,undef,0.2;
50    kill USR2 => $ppid;
51    require POSIX;
52    POSIX::_exit(0);
53}
54
55$mw->after(500, sub { $mw->destroy });
56
57MainLoop;
58
59is($caught_USR2, 2, "Caught USR2 signal exactly two times");
60
61__END__
62