See Subject.Not doing so would be reasonable, as there is no check phase anyway, however, packages using guile-build-system can define their own check phase that should respect #:tests?, but currently they can't, as #:tests? is always unset and hence (when tests? ...) is never run.
(I would give an example, but it's not in Guix yet.)
Patch to be written. Greetings, Maxime.
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