[
  {
    "description": "required schema in data property",
    "schema": {
      "properties": {
        "foo": {},
        "bar": {},
        "requiredProperties": {}
      },
      "required": { "$data": "0/requiredProperties" }
    },
    "tests": [
      {
        "description": "present required property is valid",
        "data": {
          "foo": 1,
          "requiredProperties": ["foo"]
        },
        "valid": true
      },
      {
        "description": "non-present required property is invalid",
        "data": {
          "bar": 2,
          "requiredProperties": ["foo"]
        },
        "valid": false
      },
      {
        "description": "non-present second required property is invalid",
        "data": {
          "foo": 1,
          "requiredProperties": ["foo", "bar"]
        },
        "valid": false
      },
      {
        "description": "two present required properties is valid",
        "data": {
          "foo": 1,
          "bar": 2,
          "requiredProperties": ["foo", "bar"]
        },
        "valid": true
      },
      {
        "description": "fails if value of required is not an array",
        "data": {
          "foo": 1,
          "bar": 2,
          "requiredProperties": true
        },
        "valid": false
      },
      {
        "description": "valid if value of required is undefined",
        "data": {
          "foo": 1,
          "bar": 2
        },
        "valid": true
      }
    ]
  }
]