[ { "description": "validation of date strings", "schema": {"format": "date"}, "tests": [ { "description": "a valid date string", "data": "1963-06-19", "valid": true }, { "description": "an invalid date-time string", "data": "06/19/1963", "valid": false }, { "description": "only RFC3339 not all of ISO 8601 are valid", "data": "2013-350", "valid": false } ] } ]