perl-5.16.2/cpan/Compress-Raw-Zlib/t/01version.t

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 ;

BEGIN 
{ 
    # use Test::NoWarnings, if available
    my $extra = 0 ;
    $extra = 1
        if eval { require Test::NoWarnings ;  import Test::NoWarnings; 1 };

    plan tests => 2 + $extra ;

    use_ok('Compress::Raw::Zlib', 2) ; 
}

# Check zlib_version and ZLIB_VERSION are the same.

SKIP: {
    skip "TEST_SKIP_VERSION_CHECK is set", 1 
        if $ENV{TEST_SKIP_VERSION_CHECK};
    my $zlib_h = ZLIB_VERSION ;
    my $libz   = Compress::Raw::Zlib::zlib_version;

    is($zlib_h, $libz, "ZLIB_VERSION ($zlib_h) matches Compress::Raw::Zlib::zlib_version")
        or diag <<EOM;

The version of zlib.h does not match the version of libz
 
You have zlib.h version $zlib_h
     and libz   version $libz
 
You probably have two versions of zlib installed on your system.
Try removing the one you don't want to use and rebuild.
EOM
}