1#!./perl
2
3BEGIN {
4    unless(grep /blib/, @INC) {
5	chdir 't' if -d 't';
6	@INC = '../lib';
7    }
8}
9
10use Config;
11
12BEGIN {
13    if($ENV{PERL_CORE}) {
14        if ($Config{'extensions'} !~ /\bIO\b/) {
15	    print "1..0 # Skip: IO extension not compiled\n";
16	    exit 0;
17        }
18    }
19}
20
21use IO::Handle;
22use IO::File;
23
24select(STDERR); $| = 1;
25select(STDOUT); $| = 1;
26
27print "1..6\n";
28
29print "ok 1\n";
30
31$dupout = IO::Handle->new->fdopen( \*STDOUT ,"w");
32$duperr = IO::Handle->new->fdopen( \*STDERR ,"w");
33
34$stdout = \*STDOUT; bless $stdout, "IO::File"; # "IO::Handle";
35$stderr = \*STDERR; bless $stderr, "IO::Handle";
36
37$stdout->open( "Io.dup","w") || die "Can't open stdout";
38$stderr->fdopen($stdout,"w");
39
40print $stdout "ok 2\n";
41print $stderr "ok 3\n";
42
43# Since some systems don't have echo, we use Perl.
44$echo = qq{$^X -le "print q(ok %d)"};
45
46$cmd = sprintf $echo, 4;
47print `$cmd`;
48
49$cmd = sprintf "$echo 1>&2", 5;
50$cmd = sprintf $echo, 5 if $^O eq 'MacOS';
51print `$cmd`;
52
53$stderr->close;
54$stdout->close;
55
56$stdout->fdopen($dupout,"w");
57$stderr->fdopen($duperr,"w");
58
59if ($^O eq 'MSWin32' || $^O eq 'NetWare' || $^O eq 'VMS') { print `type Io.dup` }
60elsif ($^O eq 'MacOS') { system 'Catenate Io.dup' }
61else                   { system 'cat Io.dup' }
62unlink 'Io.dup';
63
64print STDOUT "ok 6\n";
65