use Forks::Super ':test';
use Test::More tests => 9;
use Carp;
use strict;
use warnings;

#
# test whether the parent can have access to the
# STDIN, STDOUT, and STDERR filehandles from a
# child process when the child process uses
# the "cmd" option to run a shell command.
#
if (${^TAINT}) {
    $ENV{PATH} = "";
    ($^X) = $^X =~ /(.*)/;
    ($ENV{HOME}) = $ENV{HOME} =~ /(.*)/;
}


#######################################################
my (@cmd,$pid,$fh_in,$z,$t,@out,@err,$msg);
@cmd = ($^X, "t/external-command.pl", "-s=2", "-y=2");

# test read_stderr

$pid = fork [ @cmd , "-y=3" ], timeout => 6, child_fh => "in,err" ;
ok(isValidPid($pid), "started job with join");

$msg = sprintf "the message is %x", rand() * 99999999;
$z = print {$Forks::Super::CHILD_STDIN{$pid}} "$msg\n";
$z = print {$Forks::Super::CHILD_STDIN{$pid}} "That was a test\n";
ok($z > 0, "successful print to child STDIN");
ok(defined $Forks::Super::CHILD_STDIN{$pid}, "CHILD_STDIN value defined [child_fh]");
ok(!defined $Forks::Super::CHILD_STDOUT{$pid}, "CHILD_STDOUT value not defined");
ok(defined $Forks::Super::CHILD_STDERR{$pid}, "CHILD_STDERR value defined");
$t = time;
@out = ();
@err = ();
while (time < $t+7) {
    my @data = Forks::Super::read_stdout($pid, "warn" => 0);
    push @out, @data if @data>0 and $data[0] ne "";

    @data = Forks::Super::read_stderr($pid, "warn" => 0);
    push @err, @data if @data>0 and $data[0] ne "";
}

########## this is a failure point in BSD, linux #############
# maybe some warning message is getting in the output stream?
# maybe FS::read_stderr is returning an empty string

if (@out != 0 || @err != 2) {
    $Forks::Super::DONT_CLEANUP = 1;
    diag("\n+stderr -stdout test: failure imminent, PID=$$");
    diag("we expect no lines from stdout and two from stderr. What we get is:");
    diag(map {"out $_: << $out[$_] >>\n"} 0..$#out);
    diag("------------------------------------------");
    diag(map {"err $_: << $err[$_] >>\n"} 0..$#err);
    diag("------------------------------------------");
}

ok(@out == 0, "got no output from child");
ok(@err == 2, "received error msg from child " . scalar @err . "\n$err[0]\n")
    or diag("expected 2 lines, err contains:\n",
	    map{"$_: << $err[$_] >>\n"}0..$#err);
ok($err[0] =~ /received message $msg/, 
   "got Expected first line from child error msg");
ok($err[1] =~ /a test/, "got Expected second line from child error msg");
waitall; 

##################################################