Is it possible to build `JsonSchema` from object automatically?

# kotest

[nacyolsa]

Is it possible to build JsonSchema from object automatically?

[Emil Kantis]

not currently 🙂

[nacyolsa]

Ok, maybe I will create something for this. I have one more question.
In JsonObjectBuilder are minProperties and maxProperties fields but I don't see any usages of these fields. Are there some plans for them?

[Emil Kantis]

Hmm, then that's just something that hasn't been properly implemented yet.. should be used to validate https://json-schema.org/draft/2020-12/json-schema-validation.html#name-validation-keywords-for-obj

[Emil Kantis]

how much have you used the schema validations? they're pretty new and I haven't heard much about how people are liking it 😄

[nacyolsa]

It's my first time with schema validations. 🙂 I would like to check if my json have the expected number of fields.

[Emil Kantis]

Ah okay, and you don't care about the actual fields?

[Emil Kantis]

just the number? 😄 cause then, if minProperties and maxProperties are indeed unused, you're in a bit of a pickle I suppose..

[nacyolsa]

I'm trying to rewrite shouldMatchSchema to support this.
My json is generated and I would like to fail my test when someone adds a new field to the class.

[Emil Kantis]

if you serialize actual to JSON, you could just test it with shouldEqualJson (it fails if unexpected properties appear in actual)