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From: Michael Heerdegen <michael_heerdegen@web.de>
To: Eli Zaretskii <eliz@gnu.org>
Cc: larsi@gnus.org, jonas@bernoul.li, 59328@debbugs.gnu.org
Subject: bug#59328: 29.0.50; `seq-keep' implementation only valid for lists
Date: Fri, 25 Nov 2022 10:47:31 +0100	[thread overview]
Message-ID: <87wn7jfjrg.fsf@web.de> (raw)
In-Reply-To: <838rk0wak3.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 24 Nov 2022 19:02:04 +0200")

Eli Zaretskii <eliz@gnu.org> writes:

> Can tests for this be written in a way that they are only run if the
> relevant packages are available on the user's system?  If so, I'd
> prefer to have that than no tests at all.

I don't know.

Alternatively we could implement `seq-map' for an ad-hoc defined
sequence type and test using that type, e.g. this expression:

#+begin_src emacs-lisp
(progn
  (defvar gensym)
  (let ((gensym (make-symbol "foo")))
    (eval `(cl-defmethod seq-map (function (thing (head ,gensym)))
             (append (list (car thing) (cadr thing)) (seq-map function (cddr thing))))
          t)
    (equal (list gensym nil 4 46)
           (seq-keep (lambda (x) (and (integerp x) (* 2 x)))
                     (list gensym nil 2 'x gensym 23)))))
#+end_src

returns t with my patch installed and nil else and works without relying
on something external.  I'm not sure if defining methods (for seq-map in
this case) that are globally visible is allowed in tests, so I
implemented the example above in a way that the change of the generic
function is not visible from the outside (thus the "secret" gensym).

Would something like that be acceptable?

Sorry for my ignorance, I didn't write much tests before.


TIA,

Michael.





  reply	other threads:[~2022-11-25  9:47 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-17  2:17 bug#59328: 29.0.50; `seq-keep' implementation only valid for lists Michael Heerdegen
2022-11-19 13:12 ` Eli Zaretskii
2022-11-24 13:04   ` Michael Heerdegen
2022-11-24 14:19     ` Eli Zaretskii
2022-11-24 14:26       ` Michael Heerdegen
2022-11-24 15:00         ` Eli Zaretskii
2022-11-24 15:09           ` Michael Heerdegen
2022-11-24 15:15             ` Eli Zaretskii
2022-11-24 15:25               ` Michael Heerdegen
2022-11-24 17:02                 ` Eli Zaretskii
2022-11-25  9:47                   ` Michael Heerdegen [this message]
2022-11-25 11:34                     ` Stefan Kangas
2022-11-25 11:55                     ` Eli Zaretskii

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