#!./perl
-# $RCSfile: pipe.t,v $$Revision: 4.1 $$Date: 92/08/07 18:27:31 $
-
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require Config; import Config;
- unless ($Config{'d_fork'}) {
- print "1..0\n";
- exit 0;
+ require './test.pl';
+
+ if (!$Config{'d_fork'}) {
+ skip_all("fork required to pipe");
+ }
+ else {
+ plan(tests => 24);
}
}
+my $Perl = which_perl();
+
+
$| = 1;
-print "1..10\n";
-open(PIPE, "|-") || (exec 'tr', 'YX', 'ko');
-print PIPE "Xk 1\n";
-print PIPE "oY 2\n";
+open(PIPE, "|-") || exec $Perl, '-pe', 'tr/YX/ko/';
+
+printf PIPE "Xk %d - open |- || exec\n", curr_test();
+next_test();
+printf PIPE "oY %d - again\n", curr_test();
+next_test();
close PIPE;
-if (open(PIPE, "-|")) {
- while(<PIPE>) {
- s/^not //;
+{
+ if (open(PIPE, "-|")) {
+ while(<PIPE>) {
+ s/^not //;
+ print;
+ }
+ close PIPE; # avoid zombies
+ }
+ else {
+ printf STDOUT "not ok %d - open -|\n", curr_test();
+ next_test();
+ my $tnum = curr_test;
+ next_test();
+ exec $Perl, '-le', "print q{not ok $tnum - again}";
+ }
+
+ # This has to be *outside* the fork
+ next_test() for 1..2;
+
+ my $raw = "abc\nrst\rxyz\r\nfoo\n";
+ if (open(PIPE, "-|")) {
+ $_ = join '', <PIPE>;
+ (my $raw1 = $_) =~ s/not ok \d+ - //;
+ my @r = map ord, split //, $raw;
+ my @r1 = map ord, split //, $raw1;
+ if ($raw1 eq $raw) {
+ s/^not (ok \d+ -) .*/$1 '@r1' passes through '-|'\n/s;
+ } else {
+ s/^(not ok \d+ -) .*/$1 expect '@r', got '@r1'\n/s;
+ }
print;
+ close PIPE; # avoid zombies
+ }
+ else {
+ printf STDOUT "not ok %d - $raw", curr_test();
+ exec $Perl, '-e0'; # Do not run END()...
}
-}
-else {
- print STDOUT "not ok 3\n";
- exec 'echo', 'not ok 4';
-}
-pipe(READER,WRITER) || die "Can't open pipe";
+ # This has to be *outside* the fork
+ next_test();
-if ($pid = fork) {
- close WRITER;
- while(<READER>) {
- s/^not //;
- y/A-Z/a-z/;
+ if (open(PIPE, "|-")) {
+ printf PIPE "not ok %d - $raw", curr_test();
+ close PIPE; # avoid zombies
+ }
+ else {
+ $_ = join '', <STDIN>;
+ (my $raw1 = $_) =~ s/not ok \d+ - //;
+ my @r = map ord, split //, $raw;
+ my @r1 = map ord, split //, $raw1;
+ if ($raw1 eq $raw) {
+ s/^not (ok \d+ -) .*/$1 '@r1' passes through '|-'\n/s;
+ } else {
+ s/^(not ok \d+ -) .*/$1 expect '@r', got '@r1'\n/s;
+ }
print;
+ exec $Perl, '-e0'; # Do not run END()...
}
-}
-else {
- die "Couldn't fork" unless defined $pid;
- close READER;
- print WRITER "not ok 5\n";
- open(STDOUT,">&WRITER") || die "Can't dup WRITER to STDOUT";
- close WRITER;
- exec 'echo', 'not ok 6';
-}
+ # This has to be *outside* the fork
+ next_test();
+
+ SKIP: {
+ skip "fork required", 2 unless $Config{d_fork};
+
+ pipe(READER,WRITER) || die "Can't open pipe";
+
+ if ($pid = fork) {
+ close WRITER;
+ while(<READER>) {
+ s/^not //;
+ y/A-Z/a-z/;
+ print;
+ }
+ close READER; # avoid zombies
+ }
+ else {
+ die "Couldn't fork" unless defined $pid;
+ close READER;
+ printf WRITER "not ok %d - pipe & fork\n", curr_test;
+ next_test;
+
+ open(STDOUT,">&WRITER") || die "Can't dup WRITER to STDOUT";
+ close WRITER;
+
+ my $tnum = curr_test;
+ next_test;
+ exec $Perl, '-le', "print q{not ok $tnum - with fh dup }";
+ }
+
+ # This has to be done *outside* the fork.
+ next_test() for 1..2;
+ }
+}
+wait; # Collect from $pid
pipe(READER,WRITER) || die "Can't open pipe";
close READER;
$SIG{'PIPE'} = 'broken_pipe';
sub broken_pipe {
- print "ok 7\n";
+ $SIG{'PIPE'} = 'IGNORE'; # loop preventer
+ printf "ok %d - SIGPIPE\n", curr_test;
}
-print WRITER "not ok 7\n";
+printf WRITER "not ok %d - SIGPIPE\n", curr_test;
close WRITER;
+sleep 1;
+next_test;
+pass();
-print "ok 8\n";
+# VMS doesn't like spawning subprocesses that are still connected to
+# STDOUT. Someone should modify these tests to work with VMS.
-{
- local $SIG{PIPE} = 'IGNORE';
- open NIL, '|true' or die "open failed: $!";
- sleep 2;
- print NIL 'foo' or die "print failed: $!";
- if (close NIL) {
- print "not ok 9\n";
+SKIP: {
+ skip "doesn't like spawning subprocesses that are still connected", 10
+ if $^O eq 'VMS';
+
+ SKIP: {
+ # POSIX-BC doesn't report failure when closing a broken pipe
+ # that has pending output. Go figure.
+ skip "Won't report failure on broken pipe", 1
+ if $^O eq 'posix-bc';
+
+ local $SIG{PIPE} = 'IGNORE';
+ open NIL, qq{|$Perl -e "exit 0"} or die "open failed: $!";
+ sleep 5;
+ if (print NIL 'foo') {
+ # If print was allowed we had better get an error on close
+ ok( !close NIL, 'close error on broken pipe' );
+ }
+ else {
+ ok(close NIL, 'print failed on broken pipe');
+ }
}
- else {
- print "ok 9\n";
+
+ {
+ # check that errno gets forced to 0 if the piped program exited
+ # non-zero
+ open NIL, qq{|$Perl -e "exit 23";} or die "fork failed: $!";
+ $! = 1;
+ ok(!close NIL, 'close failure on non-zero piped exit');
+ is($!, '', ' errno');
+ isnt($?, 0, ' status');
+
+ # Former skip block:
+ {
+ # check that status for the correct process is collected
+ my $zombie;
+ unless( $zombie = fork ) {
+ $NO_ENDING=1;
+ exit 37;
+ }
+ my $pipe = open *FH, "sleep 2;exit 13|" or die "Open: $!\n";
+ $SIG{ALRM} = sub { return };
+ alarm(1);
+ is( close FH, '', 'close failure for... umm, something' );
+ is( $?, 13*256, ' status' );
+ is( $!, '', ' errno');
+
+ my $wait = wait;
+ is( $?, 37*256, 'status correct after wait' );
+ is( $wait, $zombie, ' wait pid' );
+ is( $!, '', ' errno');
+ }
}
}
-# check that errno gets forced to 0 if the piped program exited non-zero
-open NIL, '|exit 23;' or die "fork failed: $!";
-$! = 1;
-if (close NIL) {
- print "not ok 10\n# successful close\n";
-}
-elsif ($! != 0) {
- print "not ok 10\n# errno $!\n";
+# Test new semantics for missing command in piped open
+# 19990114 M-J. Dominus mjd@plover.com
+{ local *P;
+ no warnings 'pipe';
+ ok( !open(P, "| "), 'missing command in piped open input' );
+ ok( !open(P, " |"), ' output');
}
-elsif ($? == 0) {
- print "not ok 10\n# status 0\n";
+
+# check that status is unaffected by implicit close
+{
+ local(*NIL);
+ open NIL, qq{|$Perl -e "exit 23"} or die "fork failed: $!";
+ $? = 42;
+ # NIL implicitly closed here
}
-else {
- print "ok 10\n";
+is($?, 42, 'status unaffected by implicit close');
+$? = 0;
+
+# check that child is reaped if the piped program can't be executed
+SKIP: {
+ skip "/no_such_process exists", 1 if -e "/no_such_process";
+ open NIL, '/no_such_process |';
+ close NIL;
+
+ my $child = 0;
+ eval {
+ local $SIG{ALRM} = sub { die; };
+ alarm 2;
+ $child = wait;
+ alarm 0;
+ };
+
+ is($child, -1, 'child reaped if piped program cannot be executed');
}
https://perl5.git.perl.org / perl5.git / blobdiff