From: Sylvester Keil <sylvester.keil@...>
Date: 2011-12-12T05:26:35+09:00
Subject: Re: enforcing module contract with self.included?


On Dec 11, 2011, at 8:43 PM, Grary Stimon wrote:

> Sylvester,
> 
> Thanks, that works, but not in another important manner of use...
> 
> class SomeImplementingClass
>   include AgeBasedApprovable
> end
> 
> begin
>  SomeImplementingClass.new
>  puts 'FAIL'
> rescue => e
>  puts 'PASS: ', e.message
> end
> 
> How do I cover this case?

In this case, the proper hook method is Module.included (as you suggested in the beginning).  In order to DRY you should consider moving the check to a separate method that you call in both self.included and self.extended.