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|
#!./perl -w
BEGIN {
require Config; import Config;
if (!$Config{'d_fork'}
# open2/3 supported on win32
&& $^O ne 'MSWin32' && $^O ne 'NetWare')
{
print "1..0\n";
exit 0;
}
# make warnings fatal
$SIG{__WARN__} = sub { die @_ };
}
use strict;
use Test::More tests => 38;
use IO::Handle;
use IPC::Open3;
use POSIX ":sys_wait_h";
my $perl = $^X;
sub cmd_line {
if ($^O eq 'MSWin32' || $^O eq 'NetWare') {
my $cmd = shift;
$cmd =~ tr/\r\n//d;
$cmd =~ s/"/\\"/g;
return qq/"$cmd"/;
}
else {
return $_[0];
}
}
my ($pid, $reaped_pid);
STDOUT->autoflush;
STDERR->autoflush;
# basic
$pid = open3 'WRITE', 'READ', 'ERROR', $perl, '-e', cmd_line(<<'EOF');
$| = 1;
print scalar <STDIN>;
print STDERR "hi error\n";
EOF
cmp_ok($pid, '!=', 0);
isnt((print WRITE "hi kid\n"), 0);
like(scalar <READ>, qr/^hi kid\r?\n$/);
like(scalar <ERROR>, qr/^hi error\r?\n$/);
is(close(WRITE), 1) or diag($!);
is(close(READ), 1) or diag($!);
is(close(ERROR), 1) or diag($!);
$reaped_pid = waitpid $pid, 0;
is($reaped_pid, $pid);
is($?, 0);
my $desc = "read and error together, both named";
$pid = open3 'WRITE', 'READ', 'READ', $perl, '-e', cmd_line(<<'EOF');
$| = 1;
print scalar <STDIN>;
print STDERR scalar <STDIN>;
EOF
print WRITE "$desc\n";
like(scalar <READ>, qr/\A$desc\r?\n\z/);
print WRITE "$desc [again]\n";
like(scalar <READ>, qr/\A$desc \[again\]\r?\n\z/);
waitpid $pid, 0;
$desc = "read and error together, error empty";
$pid = open3 'WRITE', 'READ', '', $perl, '-e', cmd_line(<<'EOF');
$| = 1;
print scalar <STDIN>;
print STDERR scalar <STDIN>;
EOF
print WRITE "$desc\n";
like(scalar <READ>, qr/\A$desc\r?\n\z/);
print WRITE "$desc [again]\n";
like(scalar <READ>, qr/\A$desc \[again\]\r?\n\z/);
waitpid $pid, 0;
is(pipe(PIPE_READ, PIPE_WRITE), 1);
$pid = open3 '<&PIPE_READ', 'READ', '',
$perl, '-e', cmd_line('print scalar <STDIN>');
close PIPE_READ;
print PIPE_WRITE "dup writer\n";
close PIPE_WRITE;
like(scalar <READ>, qr/\Adup writer\r?\n\z/);
waitpid $pid, 0;
my $TB = Test::Builder->new();
my $test = $TB->current_test;
# dup reader
$pid = open3 'WRITE', '>&STDOUT', 'ERROR',
$perl, '-e', cmd_line('print scalar <STDIN>');
++$test;
print WRITE "ok $test\n";
waitpid $pid, 0;
{
package YAAH;
$pid = IPC::Open3::open3('QWACK_WAAK_WAAK', '>&STDOUT', 'ERROR',
$perl, '-e', main::cmd_line('print scalar <STDIN>'));
++$test;
no warnings 'once';
print QWACK_WAAK_WAAK "ok $test # filenames qualified to their package\n";
waitpid $pid, 0;
}
# dup error: This particular case, duping stderr onto the existing
# stdout but putting stdout somewhere else, is a good case because it
# used not to work.
$pid = open3 'WRITE', 'READ', '>&STDOUT',
$perl, '-e', cmd_line('print STDERR scalar <STDIN>');
++$test;
print WRITE "ok $test\n";
waitpid $pid, 0;
foreach (['>&STDOUT', 'both named'],
['', 'error empty'],
) {
my ($err, $desc) = @$_;
$pid = open3 'WRITE', '>&STDOUT', $err, $perl, '-e', cmd_line(<<'EOF');
$| = 1;
print STDOUT scalar <STDIN>;
print STDERR scalar <STDIN>;
EOF
printf WRITE "ok %d # dup reader and error together, $desc\n", ++$test
for 0, 1;
waitpid $pid, 0;
}
# command line in single parameter variant of open3
# for understanding of Config{'sh'} test see exec description in camel book
my $cmd = 'print(scalar(<STDIN>))';
$cmd = $Config{'sh'} =~ /sh/ ? "'$cmd'" : cmd_line($cmd);
$pid = eval { open3 'WRITE', '>&STDOUT', 'ERROR', "$perl -e " . $cmd; };
if ($@) {
print "error $@\n";
++$test;
print WRITE "not ok $test\n";
}
else {
++$test;
print WRITE "ok $test\n";
waitpid $pid, 0;
}
$TB->current_test($test);
# RT 72016
{
local $::TODO = "$^O returns a pid and doesn't throw an exception"
if $^O eq 'MSWin32';
$pid = eval { open3 'WRITE', 'READ', 'ERROR', '/non/existent/program'; };
isnt($@, '',
'open3 of a non existent program fails with an exception in the parent')
or do {waitpid $pid, 0};
SKIP: {
skip 'open3 returned, our responsibility to reap', 1 unless $@;
is(waitpid(-1, WNOHANG), -1, 'failed exec child is reaped');
}
}
$pid = eval { open3 'WRITE', '', 'ERROR', '/non/existent/program'; };
like($@, qr/^open3: Modification of a read-only value attempted at /,
'open3 faults read-only parameters correctly') or do {waitpid $pid, 0};
foreach my $handle (qw (DUMMY STDIN STDOUT STDERR)) {
local $::{$handle};
my $out = IO::Handle->new();
my $pid = eval {
local $SIG{__WARN__} = sub {
open my $fh, '>/dev/tty';
return if "@_" =~ m!^Use of uninitialized value \$fd.*IO/Handle\.pm!;
print $fh "@_";
die @_
};
open3 undef, $out, undef, $perl, '-le', "print q _# ${handle}_"
};
is($@, '', "No errors with localised $handle");
cmp_ok($pid, '>', 0, "Got a pid with localised $handle");
if ($handle eq 'STDOUT') {
is(<$out>, undef, "Expected no output with localised $handle");
} else {
like(<$out>, qr/\A# $handle\r?\n\z/,
"Expected output with localised $handle");
}
waitpid $pid, 0;
}
## Test that tied STDIN, STDOUT, and STDERR do not cause open3 any discomfort.
## In particular, tied STDERR used to be able to prevent open3 from working
## correctly. RT #119843.
#{
# { # This just throws things out
# package My::Tied::FH;
# sub TIEHANDLE { bless \my $self }
# sub PRINT {}
# # Note the absence of OPEN and FILENO
# }
# my $message = "japh\n";
# foreach my $handle (*STDIN, *STDOUT, *STDERR) {
# tie $handle, 'My::Tied::FH';
# my ($in, $out);
# my $pid = eval {
# open3 $in, $out, undef, $perl, '-ne', 'print';
# };
# is($@, '', "no errors calling open3 with tied $handle");
# print $in $message;
# close $in;
# my $japh = <$out>;
# waitpid $pid, 0;
# is($japh, $message, "read input correctly");
# untie $handle;
# }
#}
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