These tests verify that brewpony.com doesn't have broken links, broken images and non-standards-compliant HTML/CSS. It could do more in the future, but that is what it does now.
You will need Perl and Test::WWW::Mechanize, with the optional SSL-related CPAN modules also installed.
With cpanm:
cpanm --installdeps .
With Module::Build :
perl Build.PL && ./Build installdeps
You can use prove:
prove -lrv t/
or Module::Build
./Build test
which has less verbose output by default.