1#!./perl
2
3BEGIN {
4    chdir 't' if -d 't';
5    require './test.pl';
6    set_up_inc('../lib');
7}
8
9use strict;
10
11plan 7;
12
13my($dev_tty, $dev_null) = qw(/dev/tty /dev/null);
14  ($dev_tty, $dev_null) = qw(con      nul      ) if $^O =~ /^(MSWin32|os2)$/;
15  ($dev_tty, $dev_null) = qw(TT:      _NLA0:   ) if $^O eq "VMS";
16
17SKIP: {
18    open(my $tty, "<", $dev_tty)
19	or skip("Can't open terminal '$dev_tty': $!", 4);
20    if ($^O eq 'VMS') {
21        # TT might be a mailbox or other non-terminal device
22        my $tt_dev = VMS::Filespec::vmspath('TT');
23        skip("'$tt_dev' is probably not a terminal", 4) if $tt_dev !~ m/^_(tt|ft|rt)/i;
24    }
25    ok(-t $tty, "'$dev_tty' is a TTY");
26    ok(-t -e $tty, "'$dev_tty' is a TTY (with -t -e)");
27    -e 'mehyparchonarcheion'; # clear last stat buffer
28    ok(-e -t $tty, "'$dev_tty' is a TTY (with -e -t)");
29    -e 'mehyparchonarcheion';
30    ok(-e -t -t $tty, "'$dev_tty' is a TTY (with -e -t -t)");
31}
32SKIP: {
33    open(my $null, "<", $dev_null)
34	or skip("Can't open null device '$dev_null': $!", 3);
35    ok(!-t $null, "'$dev_null' is not a TTY");
36    ok(!-t -e $null, "'$dev_null' is not a TTY (with -t -e)");
37    ok(!-e -t $null, "'$dev_null' is not a TTY (with -e -t)");
38}
39