amigaos4: implement flock() emulation

[perl5.git] / t / io / dup.t

diff --git a/t/io/dup.t b/t/io/dup.t
index e5ea7d4..1328aeb 100644 (file)
--- a/t/io/dup.t
+++ b/t/io/dup.t
@@ -1,15 +1,25 @@
 #!./perl
 
-# $Header: dup.t,v 4.0 91/03/20 01:50:49 lwall Locked $
+BEGIN {
+    chdir 't' if -d 't';
+    @INC = qw(. ../lib);
+    require "./test.pl";
+}
 
-print "1..6\n";
+use Config;
+no warnings 'once';
 
+my $test = 1;
+my $tests_needing_perlio = 17;
+plan(12 + $tests_needing_perlio);
 print "ok 1\n";
 
-open(dupout,">&STDOUT");
-open(duperr,">&STDERR");
+open(DUPOUT,">&STDOUT");
+open(DUPERR,">&STDERR");
 
-open(STDOUT,">Io.dup") || die "Can't open stdout";
+my $tempfile = tempfile();
+
+open(STDOUT,">$tempfile")  || die "Can't open stdout";
 open(STDERR,">&STDOUT") || die "Can't open stderr";
 
 select(STDERR); $| = 1;
@@ -17,16 +27,118 @@ select(STDOUT); $| = 1;
 
 print STDOUT "ok 2\n";
 print STDERR "ok 3\n";
-system 'echo ok 4';
-system 'echo ok 5 1>&2';
 
-close(STDOUT);
-close(STDERR);
+# Since some systems don't have echo, we use Perl.
+$echo = qq{$^X -le "print q(ok %d)"};
+
+$cmd = sprintf $echo, 4;
+print `$cmd`;
+
+$cmd = sprintf "$echo 1>&2", 5;
+print `$cmd`;
+
+system sprintf $echo, 6;
+system sprintf "$echo 1>&2", 7;
+
+close(STDOUT) or die "Could not close: $!";
+close(STDERR) or die "Could not close: $!";
+
+open(STDOUT,">&DUPOUT") or die "Could not open: $!";
+open(STDERR,">&DUPERR") or die "Could not open: $!";
+
+if (($^O eq 'MSWin32') || ($^O eq 'NetWare')) { print `type $tempfile` }
+elsif ($^O eq 'VMS')   { system "type $tempfile.;" } # TYPE defaults to .LIS when there is no extension
+else { system "cat $tempfile" }
+
+print STDOUT "ok 8\n";
+
+open(F,">&",1) or die "Cannot dup to numeric 1: $!";
+print F "ok 9\n";
+close(F);
+
+open(F,">&",'1') or die "Cannot dup to string '1': $!";
+print F "ok 10\n";
+close(F);
+
+open(F,">&=",1) or die "Cannot dup to numeric 1: $!";
+print F "ok 11\n";
+close(F);
+
+if ($Config{useperlio}) {
+    open(F,">&=",'1') or die "Cannot dup to string '1': $!";
+    print F "ok 12\n";
+    close(F);
+} else {
+    open(F, ">&DUPOUT") or die "Cannot dup stdout back: $!";
+    print F "ok 12\n";
+    close(F);
+}
+
+# To get STDOUT back.
+open(F, ">&DUPOUT") or die "Cannot dup stdout back: $!";
+
+curr_test(13);
+
+SKIP: {
+    skip("need perlio", $tests_needing_perlio) unless $Config{useperlio};
+    
+    ok(open(F, ">&", STDOUT));
+    isnt(fileno(F), fileno(STDOUT));
+    close F;
+
+    ok(open(F, "<&=STDIN")) or _diag $!;
+    is(fileno(F), fileno(STDIN));
+    close F;
+
+    ok(open(F, ">&=STDOUT"));
+    is(fileno(F), fileno(STDOUT));
+    close F;
+
+    ok(open(F, ">&=STDERR"));
+    is(fileno(F), fileno(STDERR));
+    close F;
+
+    open(G, ">$tempfile") or die;
+    my $g = fileno(G);
+
+    ok(open(F, ">&=$g"));
+    is(fileno(F), $g);
+    close F;
+
+    ok(open(F, ">&=G"));
+    is(fileno(F), $g);
+
+    print G "ggg\n";
+    print F "fff\n";
+
+    close G; # flush first
+    close F; # flush second
 
-open(STDOUT,">&dupout");
-open(STDERR,">&duperr");
+    open(G, "<$tempfile") or die;
+    {
+       my $line;
+       $line = <G>; chomp $line; is($line, "ggg");
+       $line = <G>; chomp $line; is($line, "fff");
+    }
+    close G;
 
-system 'cat Io.dup';
-unlink 'Io.dup';
+    open UTFOUT, '>:utf8', $tempfile or die $!;
+    open UTFDUP, '>&UTFOUT' or die $!;
+    # some old greek saying.
+    my $message = "\x{03A0}\x{0391}\x{039D}\x{03A4}\x{0391} \x{03A1}\x{0395}\x{0399}\n";
+    print UTFOUT $message;
+    print UTFDUP $message;
+    binmode UTFDUP, ':utf8';
+    print UTFDUP $message;
+    close UTFOUT;
+    close UTFDUP;
+    open(UTFIN, "<:utf8", $tempfile) or die $!;
+    {
+       my $line;
+       $line = <UTFIN>; is($line, $message);
+       $line = <UTFIN>; is($line, $message);
+       $line = <UTFIN>; is($line, $message);
+    }
+    close UTFIN;
 
-print STDOUT "ok 6\n";
+}