schema.json

{
    "type": "array",
    "items": {
        "type": "object",
	"additionalProperties": false,
        "properties": {
            "given": {},
            "comment": {"type": "string"},
            "cases": {
                "type": "array",
                "items": {
                    "type": "object",
                    "additionalProperties": false,
                    "properties": {
                        "expression": {"type": "string"},
                        "result": {},
                        "error": {
                            "enum": ["invalid-arity", "invalid-type",
                                     "invalid-value", "syntax",
                                     "unknown-function"]
                        },
                        "bench": {
                            "enum": ["parse", "interpret", "full"]
                        },
                        "comment": {"type": "string"}
                    },
                    "required": ["expression"],
                    "anyOf": [
                        {"required": ["result"]},
                        {"required": ["error"]},
                        {"required": ["bench"]}
                    ]
                }
            }
        },
        "required": ["given", "cases"]
    }
}