{
  "mockBidRequest": {
    "id": "rqid",
    "imp": [
      {
        "id": "impid",
        "video": {
         "w": 100,
          "h": 200
        },
        "ext": {
          "bidder": {
            "placementId": "BOGUS"
          }
        }
      }
    ]
  },

  "expectedMakeRequestsErrors": [
    {
      "value": "cannot unmarshal openrtb_ext.ExtImpCpmstar.PoolId: unexpected character",
      "comparison": "startswith"
    }
  ]
}