public void EmptyPaymentShouldNotBeValid()
{
var request = new PaymentRequest();
var errors = new List <string>();
var isValid = PaymentValidator.IsPaymentRequestValid(request, TestDate, errors);
Assert.AreEqual(false, isValid);
Assert.Contains("Empty-Merchant", errors);
Assert.Contains("Empty-CardNumber", errors);
Assert.Contains("Empty-Cvv", errors);
Assert.Contains("Empty-ExpiryMonth", errors);
Assert.Contains("Empty-ExpiryYear", errors);
Assert.Contains("Empty-CardHolderName", errors);
Assert.Contains("Empty-Amount", errors);
Assert.Contains("Empty-Currency", errors);
}