If you want to have 100% testable code, you have to change your coding habits. It means your main program basically becomes 
use ModuleA;
use ModuleB;
use Runner;

Runner::run(@ARGV);

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As an intermediate step, you can also test existing programs by calling them via an IPC method and examining the output or exit status.

لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: A brief question about testing/best practices by choroba
in thread A brief question about testing/best practices by Amblikai

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