[
  {
    "description": "use latest json schema as v4 (#33)",
    "schema": {
      "$schema": "http://json-schema.org/schema",
      "type": "object",
      "properties": {
        "username": {
          "type": "string"
        }
      }
    },
    "tests": [
      {
        "description": "empty object",
        "data": {},
        "valid": true
      }
    ]
  }
]