Missing generator for (schema/both ...)

[dfrese]

A geneator for (both ...) schemas seems to be missing:

Execution error (IllegalArgumentException) at schema-generators.generators/eval11171$fn$G (generators.cljc:56).
No implementation of method: :composite-generator of protocol: #'schema-generators.generators/CompositeGenerator found for class: schema.core.Both

Schema library version "1.1.12" was used.

[gfredericks]

both is thorny because you can't reasonably make a generator that's guaranteed to succeed. One approach is to generate something from the first generator, use gen/such-that to filter based on matching the second generator, and risk throwing an exception if it can't succeed.

That puts the burden on the user to understand that implementation and possibly have to fall back to custom generators.

I'm not saying it shouldn't be done, it's just a less obvious design choice than most other schema->gen implementations.