{
    "description": "Interstitial Banner Ad Without Sizes Defined",
    "mockBidRequest": {
        "id": "some-request-id",
        "site": {
            "page": "test.somepage.com"
        },
        "imp": [{
            "id": "some-imp-id",
            "instl": 1,
            "banner": {},
            "ext": {
                "prebid": {
                    "bidder": {
                        "appnexus": {
                            "placementId": 12883451
                        }
                    }
                }
            }
        }]
    },
    "expectedBidResponse": {
        "id": "some-request-id",
        "seatbid": [{
            "bid": [{
                "id": "appnexus-bid",
                "impid": "some-imp-id",
                "price": 0
            }],
            "seat": "appnexus"
        }],
        "bidid": "test bid id",
        "cur": "USD",
        "nbr": 0
    },
    "expectedReturnCode": 200
}