build/tools/json_validator/test/test_schema_with_ref.json

{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "title": "json_validator test schema with reference",
    "description": "A basic JSON schema with a reference",
    "type": "object",
    "$ref": "#/$defs/root_schema",
    "$defs": {
        "root_schema": {
            "properties": {
                "message": {
                    "description": "An arbitrary message",
                    "type": "string"
                },
                "extra_field": {
                    "type": "number"
                }
            },
            "required": [
                "message",
                "extra_field"
            ]
        }
    }
}