use strict;
use Test::More tests => 18;
#use Test::More qw/no_plan/;

use PerlIO::via::Limit;

my $file = "t/30_write_file.txt";
my $write;
my $contents = qq[Perl officially stands for Practical Extraction and Report Language, except when it doesn't.\x0aPerl was originally a language optimized for scanning arbitrary text files, extracting information from those text files, and printing reports based on that information. It quickly became a good language for many system management tasks. Over the years, Perl has grown into a general-purpose programming language. It's widely used for everything from quick "one-liners" to full-scale application development.\x0a];

my $layer_via_create = sub {
    my $limit = PerlIO::via::Limit->create(@_);
    ">:raw:via($limit)";
};

my $layer_via_class = sub {
    PerlIO::via::Limit->length(@_);
    ">:raw:via(Limit)";
};


for my $layer ($layer_via_class, $layer_via_create){

    PerlIO::via::Limit->sensitive(0);

    {
        ok( open( $write, $layer->(undef), $file ), 'open for writing' );
        ok( print( $write $contents ), 'prints' );
        ok( close $write, 'close ok');
        is( -s $file, CORE::length $contents, 'no limit');
    }

    {
        open( $write, $layer->(102), $file ) or die;
        print $write $contents;
        close $write or die;
        is( -s $file, 102, 'restrict length 102');
    }

    PerlIO::via::Limit->sensitive(1);
    
    {
        open( $write, $layer->(10), $file ) or die;
        eval {
            print $write "0123456";
            print $write "789A";
        };
        close $write or die;
        my $exception = $@;
        ok( $exception, 'sensitive option throws exception');
        ok( ref($exception), "exception is a reference" );
        ok( Exception::Class->caught('PerlIO::via::Limit::Exception'),
                              'caught PerlIO::via::Limit::Exception');
        is( -s $file, 10, 'caught but it has written restrict length');
    }
}

1;
__END__