$ cover -delete
   $ make test HARNESS_PERL_SWITCHES=1
   $ cover cover_db --report=txt > coverage.txt

   # in the section of coverage.txt reporting on lib/Beta.pm:
   # (for simplicity, displaying only statement coverage)

   blib/lib/Beta.pm

   line  err   stmt   code
   1                  package Beta;
   2                  #$Id#
   3              2   use strict;

   # [snip]

   16             2       print $fh "Howdy, beta\n";
   17             2       close $fh;
   18             2       return $string;
   19                 }
   20
   21                 *Alpha::sayhowdy = \&sayhowdy
                          if ! defined &Alpha::sayhowdy;
   22
   23                 1;