public void Search_OnAuthorizationExpiredStatus()
{
TransactionSearchRequest searchRequest = new TransactionSearchRequest().
Status.Is(TransactionStatus.AUTHORIZATION_EXPIRED);
ResourceCollection<Transaction> results = gateway.Transaction.Search(searchRequest);
Assert.IsTrue(results.MaximumCount > 0);
Assert.AreEqual(TransactionStatus.AUTHORIZATION_EXPIRED, results.FirstItem.Status);
}