Xinglu Chen schreef op ma 07-02-2022 om 10:07 [+0100]:
> +(define (latest-release package)
> +  (mock ((guix import json) json-fetch
> +         (lambda* (url #:key cached?)
> +           (json-string->scm %test-json)))
> +        (repology-latest-release package)))

It would be nice to verify the URL.
FWIW, there's a 'with-http-server' macro.
although it might need to be extended a little, see e.g.
<https://issues.guix.gnu.org/53389>.

Also, you are using 'memoize' in repology-fetch-info,
so the memoisation cache needs to be invalidated
(see e.g. tests/minetest.scm), or not, depending
on how 'repology-fetch-info' is used and tests are written.

Greetings,
Maxime.