use lib 't';
use strict;
use warnings;
use bytes;

use Test::More ;
use CompTestUtils;

BEGIN
{
    plan(skip_all => "Destroy not supported in Perl $]")
        if $] == 5.008 || ( $] >= 5.005 && $] < 5.006) ;

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

    plan tests => 15 + $extra ;

    use_ok('IO::File') ;
}

sub run
{

    my $CompressClass   = identify();
    my $UncompressClass = getInverse($CompressClass);
    my $Error           = getErrorRef($CompressClass);
    my $UnError         = getErrorRef($UncompressClass);

    title "Testing $CompressClass";

    {
        # Check that the class destructor will call close

        my $lex = new LexFile my $name ;

        my $hello = <<EOM ;
hello world
this is a test
EOM


        {
          ok my $x = new $CompressClass $name, -AutoClose => 1  ;

          ok $x->write($hello) ;
        }

        is anyUncompress($name), $hello ;
    }

    {
        # Tied filehandle destructor


        my $lex = new LexFile my $name ;

        my $hello = <<EOM ;
hello world
this is a test
EOM

        my $fh = new IO::File "> $name" ;

        {
          ok my $x = new $CompressClass $fh, -AutoClose => 1  ;

          $x->write($hello) ;
        }

        ok anyUncompress($name) eq $hello ;
    }
    
    {
        title "Testing DESTROY doesn't clobber \$! etc ";

        my $lex = new LexFile my $name ;

        my $out;
        my $result;
        
        {
            ok my $z = new $CompressClass($name); 
            $z->write("abc") ;
            $! = 22 ;

            cmp_ok $!, '==', 22, '  $! is 22';
        }
        
        cmp_ok $!, '==', 22, "  \$! has not been changed by $CompressClass destructor";

                
        {
                my $uncomp;
                ok my $x = new $UncompressClass($name, -Append => 1)  ;
                
                my $len ;
                1 while ($len = $x->read($result)) > 0 ;
                
                $! = 22 ;

                cmp_ok $!, '==', 22, '  $! is 22';
        }    
           
        cmp_ok $!, '==', 22, "  \$! has not been changed by $UncompressClass destructor";
                
        is $result, "abc", "  Got uncompressed content ok";
 
    }
}

1;