[
    {
        "description": "validate definition against metaschema",
        "schema": {"$ref": "https://json-schema.org/draft/2019-09/schema"},
        "tests": [
            {
                "description": "valid definition schema",
                "data": {"$defs": {"foo": {"type": "integer"}}},
                "valid": true
            },
            {
                "description": "invalid definition schema",
                "data": {"$defs": {"foo": {"type": 1}}},
                "valid": false
            }
        ]
    }
]