{
  "description": "Bid request's sole imp element is empty",
  "mockBidRequest": {
    "id": "req-id",
    "imp": [
      { }
    ],
    "app": {
      "id": "app_001"
    }
  },
  "expectedReturnCode": 400,
  "expectedErrorMessage": "Invalid request: request.imp[0] missing required field: \"id\"\n"
}