use Forks::Super qw(:test overload);
use Test::More tests => 11;
use strict;
use warnings;
#
# test whether a parent process can have access to the
# STDIN, STDOUT, and STDERR filehandles of a child
# process. This features allows for communication
# between parent and child processes.
#
# this is a subroutine that copies STDIN to STDOUT and optionally STDERR
sub repeater {
Forks::Super::debug("repeater: method beginning") if $Forks::Super::DEBUG;
my ($n, $e) = @_;
my $end_at = time + 6;
my ($input_found, $input) = 1;
local $!;
Forks::Super::debug("repeater: ready to read input")
if $Forks::Super::DEBUG;
while (time < $end_at) {
while (defined ($_ = <STDIN>)) {
if ($Forks::Super::DEBUG) {
$input = substr($_,0,-1);
$input_found = 1;
Forks::Super::debug("repeater: read \"$input\" on STDIN/",
fileno(STDIN));
}
if ($e) {
print STDERR $_;
if ($Forks::Super::DEBUG) {
Forks::Super::debug("repeater: wrote \"$input\" to STDERR/",
fileno(STDERR));
}
}
for (my $i = 0; $i < $n; $i++) {
print STDOUT "$i:$_";
if ($Forks::Super::DEBUG) {
Forks::Super::debug(
"repeater: wrote [$i] \"$input\" to STDOUT/",
fileno(STDOUT));
}
}
}
if ($Forks::Super::DEBUG && $input_found) {
$input_found = 0;
Forks::Super::debug("repeater: no input");
}
Forks::Super::pause();
seek STDIN, 0, 1;
}
if ($Forks::Super::DEBUG) {
my $f_in = Forks::Super::Job->this->{fh_config}->{f_in};
Forks::Super::debug("repeater: time expired. ",
"Not processing any more input");
Forks::Super::debug("input was from file: $f_in");
open(my $F_IN, "<", $f_in);
while (<$F_IN>) {
s/\s+$//;
Forks::Super::debug(" input $.: $_");
}
close $F_IN;
}
}
#######################################################
my $pid = fork { sub => \&repeater, timeout => 10, args => [ 3, 1 ],
child_fh => "all" };
ok(isValidPid($pid), "pid $pid valid");
ok(defined $pid->{child_stdin}, "found stdin fh");
ok(defined $pid->{child_stdout},"found stdout fh");
ok(defined $pid->{child_stderr},"found stderr fh");
my $msg = sprintf "%x", rand() * 99999999;
my $z = $pid->write_stdin("$msg\n");
ok($z > 0, "print to child stdin successful");
my $t = time;
my (@out,@err);
while (time < $t+10) {
push @out, $pid->read_stdout();
push @err, $pid->read_stderr();
sleep 1;
}
$pid->close_fh('stdin');
ok(@out == 3, scalar @out . " == 3 lines from STDOUT [ @out ]");
# exclude warning to child STDERR
@err = grep { !/alarm\(\) not available/ } @err;
ok(@err == 1, scalar @err . " == 1 line from STDERR\n" . join $/,@err);
ok($out[0] eq "0:$msg\n", "got Expected first line from child output");
ok($out[1] eq "1:$msg\n", "got Expected second line from child output");
ok($out[2] eq "2:$msg\n", "got Expected third line from child output");
ok($err[-1] eq "$msg\n", "got Expected line from child error");
waitall;