Thanks for that, but I think you misunderstand the question. I know how to turn on taint mode for a program. What I don't know how to do is turn on taint mode for a unit test that is run specifically as part of installation of a module.
For example, if you use CPAN and install "Foo", then CPAN performs roughly the equivalent of the following steps:
- wget http://somefakesite.site/Foo.0.0.1.tar.gz
- tar -xzf Foo.0.0.1.tar.gz
- cd Foo.0.0.1
- perl Makefile.PL
- make test
- make install (Assuming the tests in #6 pass of course)
What I'd like to know is if it's possible for me to test with taint mode on as part of that step in #6.