Re: Dynamic modules: should should-error work?

[Eli Zaretskii <eliz@gnu.org>]

> From: Philipp Stephani <p.stephani2@gmail.com>
> Date: Mon, 07 Dec 2015 20:09:49 +0000
> Cc: emacs-devel@gnu.org
> 
>     > + (let ((descr (should-error (mod-test-sum 1 2 3))))
>     > + (should (eq (car descr) 'wrong-number-of-arguments))
>     >
>     >
>     > I think testing using :type would also accept subtypes of the given type,
>     which
>     > I think would be preferrable (I'd expect that generally subtypes of the
>     > documented signals are allowed to be thrown).
>     
>     I'm not sure I understand what you are saying. Can you give an
>     example?
> 
> If it is documented that an error of type X is thrown, does that mean the error
> symbol is exactly X or rather that one of its conditions is X? 

In general, the latter; but for wrong-number-of-arguments we know it
has no additional conditions, so it will be exactly it and nothing
else.