{
  "mockBidRequest": {
    "id": "some-request-id",
    "imp": [
      {
        "id": "some-impression-id",
        "banner": {
          "format": [
            {
              "w": 300,
              "h": 250
            }
          ]
        },
        "ext": {
          "bidder": []
        }
      }
    ],
    "site": {
      "page": "prebid.org"
    },
    "device": {
      "ip": "8.8.8.8"
    },
    "at": 1,
    "tmax": 500
  },
  "expectedMakeRequestsErrors": [
    {
      "value": "ignoring imp id=some-impression-id, invalid ImpExt",
      "comparison": "literal"
    }
  ]
}