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malli
J 2025-11-13T16:25:18.474519Z
Hi guys! I have this schema:
(def s
[:map
[:x :string]
[:y {:optional true :gen/return "hello"} :string]]y be always generate with malli.gen
2025-11-13T16:36:16.286169Z
if it always generates :y, when do you test that it doesn't exist?
J 2025-11-13T17:04:29.468889Z
Yes maybe not always
2025-11-13T17:06:24.065859Z
I mean that the purpose of test generation is to test all permutations of the potential data. if you want to cover the part where it doesn't do that, maybe generate only the :x schema and add in the :y schema after
👍 1
Ben Sless 2025-11-13T17:27:46.309029Z
I think the gen should be attached to the string and not the map entry
2025-11-13T22:26:11.744489Z
Not supported at the moment IIRC, either use :gen/fmap to assoc the entry back on or :gen/schema to override the entire schema. It would be easy to support a :gen/optional field on the map entry, please open a ticket if you're interested in that.
(def s
[:map
{:gen/schema [:map [:x :string] [:y :string]]}
[:x :string]
[:y {:optional true} :string]](def s
[:map
[:x :string]
[:y {:optional true :gen/optional false} :string]]