You can also test your code within a module directory. Then you can let Perl's make system find all of your .t files for you and test with a simple 'make test' on the command line.
Comment on Re: Is there a better way to get all the t/.t test files an array?
Sounds promising, but I don't really understand. Could you link to the relevant information describing how to do this? I use modules, but I am not familiar with the MakeMaker / Module::Build type infrastructure for distribution. (High on the list of things to learn.)