{
  "description": "Banner specifies both w and wratio values, which is invalid",
  "mockBidRequest": {
    "id":"req-id",
    "imp": [
      {
        "id": "imp-id",
        "banner": {
          "format": [
            {
              "w":30,
              "wratio":23
            }
          ]
        }
      }
    ],
    "app": {
      "id": "app_001"
    }
  },
  "expectedReturnCode": 400,
  "expectedErrorMessage": "Invalid request: Request imp[0].banner.format[0] should define *either* {w, h} *or* {wmin, wratio, hratio}, but not both. If both are valid, send two \"format\" objects in the request.\n"
}