public void ShowChargeSuccessful()
{
var content = File.ReadAllText("../../../Fixtures/charges_show.json");
var client = GetMockClient(content);
var repo = new ChargeRepository(client.Object);
var id = "cb7eafc1-571c-425c-9adc-f56cb585cd68";
var response = repo.ShowCharge(id);
var charge = JsonConvert.DeserializeObject <IDictionary <string, object> >(JsonConvert.SerializeObject(response["charges"]));
Assert.IsNotNull(charge);
Assert.AreEqual(id, charge["id"]);
}