Write a test for sideloading

[mjallday]

Given the payload

{
    "debits": [
        {
            "amount": 5000, 
            "appears_on_statement_as": "BAL*Statement text", 
            "created_at": "2014-02-27T20:03:06.176697Z", 
            "currency": "USD", 
            "description": "Some descriptive text for the debit in the dashboard", 
            "failure_reason": null, 
            "failure_reason_code": null, 
            "href": "/debits/WD1l5vYA21ZP24LMQMqHizea", 
            "id": "WD1l5vYA21ZP24LMQMqHizea", 
            "links": {
                "customer": null, 
                "dispute": null, 
                "order": null, 
                "source": "CC1diaA1Lunr4RlelwKQ8C4v"
            }, 
            "meta": {}, 
            "status": "succeeded", 
            "transaction_number": "W347-910-8642", 
            "updated_at": "2014-02-27T20:03:07.629780Z"
        }
    ], 
    "foos": [
        {
        }
    ], 
    "links": {
        "debits.customer": "/customers/{debits.customer}", 
        "debits.dispute": "/disputes/{debits.dispute}", 
        "debits.events": "/debits/{debits.id}/events", 
        "debits.order": "/orders/{debits.order}", 
        "debits.refunds": "/debits/{debits.id}/refunds", 
        "debits.source": "/resources/{debits.source}"
    }
}

Make sure that this client library does not choke and return the wrong object.