How to perform data validations programatically?

[cueckoo]

Originally opened by @joanlopez in cuelang/cue#810

Hi folks!

I'm trying to add support for Cue validations into another Go tool, so basically I'm wondering how I can perform data validations programatically.

Let's say in a similar way I'd run the go vet command with a data file (JSON, YAML, etc) and a CUE file with some data constrains & schema.

How can I achieve something similar programatically, considering, for example, I have the bytes of each file in a variable?

Thanks!! 🙏🏻

[cueckoo]

Original reply by @mpvl in cuelang/cue#810 (comment)

There is an extensive API for this. See cuelang.org/go/cue, cuelang.org/go/cue/load and friends.

Validation is typically done by getting two cue.Values and unify them using cue.Unify. The Validate method allows you to be more specific about which errors to get.

You can also validate Go values directly. See cuelang.org/go/encoding/gocode.