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HWAT / PerlIO-via-Limit-0.02 / t / 10_length.t 
use strict;
use Test::More tests => 3;

use PerlIO::via::Limit length => 10;
is( PerlIO::via::Limit->length, 10, 'PerlIO::via::Limit::length');

PerlIO::via::Limit->length(undef);
is( PerlIO::via::Limit->length, undef, 'set PerlIO::via::Limit::length to undef');

PerlIO::via::Limit->length(100);
is( PerlIO::via::Limit->length, 100, 'set PerlIO::via::Limit::length to num');