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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 bytes;
use Test::More ;
use CompTestUtils;
BEGIN
{
plan skip_all => "Lengthy Tests Disabled\n" .
"set COMPRESS_ZLIB_RUN_ALL to run this test suite"
unless defined $ENV{COMPRESS_ZLIB_RUN_ALL} ;
# use Test::NoWarnings, if available
my $extra = 0 ;
$extra = 1
if eval { require Test::NoWarnings ; import Test::NoWarnings; 1 };
plan tests => 76 + $extra ;
use_ok('Compress::Zlib', 2) ;
use_ok('IO::Compress::Gzip', qw($GzipError)) ;
use_ok('IO::Uncompress::Gunzip', qw($GunzipError)) ;
use_ok('IO::Compress::Gzip::Constants');
}
my $compressed ;
my $expected_crc ;
for my $wrap (0 .. 2)
{
for my $offset ( -1 .. 1 )
{
next if $wrap == 0 && $offset < 0 ;
title "Wrap $wrap, Offset $offset" ;
my $size = (GZIP_ISIZE_MAX * $wrap) + $offset ;
my $expected_isize ;
if ($wrap == 0) {
$expected_isize = $offset ;
}
elsif ($wrap == 1 && $offset <= 0) {
$expected_isize = GZIP_ISIZE_MAX + $offset ;
}
elsif ($wrap > 1) {
$expected_isize = GZIP_ISIZE_MAX + $offset - 1;
}
else {
$expected_isize = $offset - 1;
}
sub gzipClosure
{
my $gzip = shift ;
my $max = shift ;
my $index = 0 ;
my $inc = 1024 * 5000 ;
my $buff = 'x' x $inc ;
my $left = $max ;
return
sub {
if ($max == 0 && $index == 0) {
$expected_crc = crc32('') ;
ok $gzip->close(), ' IO::Compress::Gzip::close ok X' ;
++ $index ;
$_[0] .= $compressed;
return length $compressed ;
}
return 0 if $index >= $max ;
while ( ! length $compressed )
{
$index += $inc ;
if ($index <= $max) {
$gzip->write($buff) ;
#print "Write " . length($buff) . "\n" ;
#print "# LEN Compressed " . length($compressed) . "\n" ;
$expected_crc = crc32($buff, $expected_crc) ;
$left -= $inc ;
}
else {
#print "Write $left\n" ;
$gzip->write('x' x $left) ;
#print "# LEN Compressed " . length($compressed) . "\n" ;
$expected_crc = crc32('x' x $left, $expected_crc) ;
ok $gzip->close(), ' IO::Compress::Gzip::close ok ' ;
last ;
}
}
my $len = length $compressed ;
$_[0] .= $compressed ;
$compressed = '';
#print "# LEN $len\n" if $len <=0 ;
return $len ;
};
}
my $gzip = new IO::Compress::Gzip \$compressed,
-Append => 0,
-HeaderCRC => 1;
ok $gzip, " Created IO::Compress::Gzip object";
my $gunzip = new IO::Uncompress::Gunzip gzipClosure($gzip, $size),
-BlockSize => 1024 * 500 ,
-Append => 0,
-Strict => 1;
ok $gunzip, " Created IO::Uncompress::Gunzip object";
my $inflate = *$gunzip->{Inflate} ;
my $deflate = *$gzip->{Deflate} ;
my $status ;
my $uncompressed;
my $actual = 0 ;
while (($status = $gunzip->read($uncompressed)) > 0) {
#print "# READ $status\n" ;
$actual += $status ;
}
is $status, 0, ' IO::Uncompress::Gunzip::read returned 0'
or diag "error status is $status, error is $GunzipError" ;
ok $gunzip->close(), " IO::Uncompress::Gunzip Closed ok" ;
is $actual, $size, " Length of Gunzipped data is $size"
or diag "Expected $size, got $actual";
my $gunzip_hdr = $gunzip->getHeaderInfo();
is $gunzip_hdr->{ISIZE}, $expected_isize,
sprintf(" ISIZE is $expected_isize [0x%X]", $expected_isize);
is $gunzip_hdr->{CRC32}, $expected_crc,
sprintf(" CRC32 is $expected_crc [0x%X]", $expected_crc);
$expected_crc = 0 ;
}
}
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