t directory is where your application's automatic tests are stored. By default, you'll have the following three tests:
01app.t, which is a test that passes if your application compiles.
02pod.t, which will pass if your Plain Old Documentation (POD) embedded API documentation, inside your application, is valid.
03podcoverage.t, which tests that every public function in your application has some documentation.
You can run the tests in this command by running
make test, after
Makefile.PL creates the