#!perl -w
#
# RT #39730, http://rt.cpan.org/Ticket/Display.html?id=39730
# Test passing APIs undefined values
#
# $Id: 03_undef.t 452 2009-01-17 16:16:08Z cosimo.streppone $

use strict;
use warnings;
use Test::More;

use IPC::Open3 qw(open3);
use Win32::API qw();
use Win32API::File qw(GetOsFHandle INVALID_HANDLE_VALUE);

plan tests => 3;

diag('Win32::API ' . Win32::API->VERSION());

ok(
    Win32::API->Import(
        'kernel32',
        'BOOL PeekNamedPipe(
            HANDLE hNamedPipe,
            LPVOID lpBuffer,
            DWORD nBufferSize,
            LPDWORD lpBytesRead,
            LPDWORD lpTotalBytesAvail,
            LPDWORD lpBytesLeftThisMessage
        )',
    ),
    'import sample API (PeekNamedPipe)',
);

diag('Import: ' . $^E);

my $pid;
my $success = eval {

    $pid = open3(my $to_child, my $fr_child, undef, qq{"$^X"})
        or die( "open3: $!\n" );

    ( my $fd_pipe = GetOsFHandle( $fr_child ) ) != INVALID_HANDLE_VALUE
        or die( "GetOsFHandle: $^E\n" );

    PeekNamedPipe( $fd_pipe, undef, 0, undef, my $nAvail, undef )
        or die( "PeekNamedPipe: $^E\n" );

    1
};

if (! $success) {
    diag($@);
}

# Not very gentle, but closing $to_child and $fr_child don't end it.
ok(kill(TERM => $pid), 'reclaiming child worked');
#diag("kill: $!");

ok($success, '(RT #39730) sample API (PeekNamedPipe) works with undef values');