[
  {
    "description": "propertyNames validation",
    "schema": {
      "type": "object",
      "propertyNames": { "format": "email" }
    },
    "tests": [
      {
        "description": "all property names valid",
        "data": {
          "foo@example.com": {},
          "bar.baz@email.example.com": {}
        },
        "valid": true
      },
      {
        "description": "some property names invalid",
        "data": {
          "foo": {},
          "bar.baz@email.example.com": {}
        },
        "valid": false
      },
      {
        "description": "object without properties is valid",
        "data": {},
        "valid": true
      }
    ]
  }
]