{
  "description": "Bid request with user.eids array element that does not contain source field",
  "mockBidRequest": {
    "id": "anyRequestID",
    "site": {
      "page": "prebid.org",
      "publisher": {
        "id": "anyPublisher"
      }
    },
    "imp": [{
      "id": "anyImpID",
      "ext": {
        "appnexus": {
          "placementId": 42
        }
      },
      "banner": {
        "format": [{
            "w": 300,
            "h": 250
          },
          {
            "w": 300,
            "h": 300
          }
        ]
      }
    }],
    "tmax": 1000,
    "user": {
      "eids": [{
        "uids": [{
          "id": "A"
        }]
      }]
    }
  },
  "expectedReturnCode": 200,
  "expectedBidResponse": {
    "ext": {
      "warnings": {
        "source": "prebid-server",
        "message": "request.user.eids[0] missing required field: source"
      }
    }
  }
}