Braintree.Tests.Integration.TransactionIntegrationTest.Credit_WithValidationError C# (CSharp) Method

        public void Credit_WithValidationError()
        {
            TransactionRequest request = new TransactionRequest
            {
                CreditCard = new TransactionCreditCardRequest
                {
                    ExpirationMonth = "05",
                    ExpirationYear = "2010"
                }
            };

            Result<Transaction> result = gateway.Transaction.Credit(request);
            Assert.IsFalse(result.IsSuccess());
            Assert.IsNull(result.Target);

            Assert.AreEqual(ValidationErrorCode.TRANSACTION_AMOUNT_IS_REQUIRED, result.Errors.ForObject("Transaction").OnField("Amount")[0].Code);

            Dictionary<string, string> parameters = result.Parameters;
            Assert.IsFalse(parameters.ContainsKey("transaction[amount]"));
            Assert.AreEqual("05", parameters["transaction[credit_card][expiration_month]"]);
            Assert.AreEqual("2010", parameters["transaction[credit_card][expiration_year]"]);
        }