For-non-perlio places we need STDOUT back.

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

diff --git a/t/io/dup.t b/t/io/dup.t
index 901642d..91e4f26 100755 (executable)
--- a/t/io/dup.t
+++ b/t/io/dup.t
@@ -1,15 +1,21 @@
 #!./perl
 
-# $RCSfile: dup.t,v $$Revision: 4.1 $$Date: 92/08/07 18:27:27 $
+BEGIN {
+    chdir 't' if -d 't';
+    @INC = qw(. ../lib);
+    require "./test.pl";
+}
 
-print "1..6\n";
+use Config;
 
+my $test = 1;
+print "1..26\n";
 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";
+open(STDOUT,">Io.dup")  || die "Can't open stdout";
 open(STDERR,">&STDOUT") || die "Can't open stderr";
 
 select(STDERR); $| = 1;
@@ -17,16 +23,114 @@ 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)"};
 
-open(STDOUT,">&dupout");
-open(STDERR,">&duperr");
+$cmd = sprintf $echo, 4;
+print `$cmd`;
 
-system 'cat Io.dup';
+$cmd = sprintf "$echo 1>&2", 5;
+$cmd = sprintf $echo, 5 if $^O eq 'MacOS';  # don't know if we can do this ...
+print `$cmd`;
+
+# KNOWN BUG system() does not honor STDOUT redirections on VMS.
+if( $^O eq 'VMS' ) {
+    print "not ok $_ # TODO system() not honoring STDOUT redirect on VMS\n"
+      for 6..7;
+}
+else {
+    system sprintf $echo, 6;
+    if ($^O eq 'MacOS') {
+        system sprintf $echo, 7;
+    }
+    else {
+        system sprintf "$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') || ($^O eq 'NetWare') || ($^O eq 'VMS')) { print `type Io.dup` }
+elsif ($^O eq 'MacOS') { system 'catenate Io.dup' }
+else                   { system 'cat Io.dup' }
 unlink 'Io.dup';
 
-print STDOUT "ok 6\n";
+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", 14) unless $Config{useperlio};
+    
+    ok(open(F, ">&", STDOUT));
+    isnt(fileno(F), fileno(STDOUT));
+    close F;
+
+    ok(open(F, "<&=STDIN"));
+    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, ">dup$$") or die;
+    my $g = fileno(G);
+
+    ok(open(F, ">&=$g"));
+    is(fileno(F), $g);
+    close F;
+
+    ok(open(F, ">&=G"));
+    is(fileno(F), $g);
+
+    print G "ggg\n";
+    print F "fff\n";
+
+    close G; # flush first
+    close F; # flush second
+
+    open(G, "<dup$$") or die;
+    {
+       my $line;
+       $line = <G>; chomp $line; is($line, "ggg");
+       $line = <G>; chomp $line; is($line, "fff");
+    }
+    close G;
+
+    END { 1 while unlink "dup$$" }
+}