Thanks, chromatic. By the way, just this morning I had another quick look into your testing handbook. I've enjoyed it very much when I read it the first time, many months ago. And I still like it.
To sum up, I'll use

use_ok('MyModule::Common', ':all') or exit;
diag( "Can use ':all' to import all subs that MyModule::Common exports
+ ");
[download]

,then.