BEGIN {    if ($ENV{PERL_CORE}) {	chdir 't' if -d 't';	@INC = ("../lib", "lib/compress");    }}use lib qw(t t/compress);use strict;use warnings;#use Test::More skip_all => "not implemented yet";use Test::More ;BEGIN {    # use Test::NoWarnings, if available    my $extra = 0 ;    $extra = 1        if eval { require Test::NoWarnings ;  import Test::NoWarnings; 1 };    plan tests => 978 + $extra;};use IO::Compress::Gzip     qw($GzipError) ;use IO::Uncompress::Gunzip qw($GunzipError) ;sub identify{    return 'IO::Compress::Gzip';}require "truncate.pl" ;run();