UUID in enum fails validation

[JosefWN]

Schema:

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "source": {
      "oneOf": [{ "const": "parent" }, { "type": "string", "format": "uuid" }]
    }
  }
}

Data:

{
  "source": "parent"
}

Output:

data.json - INVALID. Errors:
1. "parent" is valid under more than one of the schemas listed in the 'oneOf' keyword

I would say there is no ambiguity preventing differentiation between a UUID and "parent"?

Regex:

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "source": {
      "oneOf": [
        { "const": "parent" },
        {
          "type": "string",
          "pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"
        }
      ]
    }
  }
}

Works.

As an aside, finding the issue in the first place was a bit of a struggle, so +1 for this: #649

[Stranger6667]

Hi! Thanks for opening this

Indeed, the oneOf validation results are really not intuitive. I'll add a note to the docs until they are not good enough.

The validation fails because format is an annotation, not an assertion (for Draft 2020-12), and you need to enable format validation explicitly. I am going to update the docs on this matter too

[JosefWN]

Thanks for the swift response (and for your work on jsonschema), closing this!