public void IsMothlyFeeAdded()
{
decimal fee1 = 0m;
decimal fee2 = 0m;
FeeCalculator SUT = new FeeCalculator();
ITransactionData transaction = new TransactionData()
{
Date = new DateTime(2020, 5, 25),
MerchantName = "TELIA",
Fee = 1.2m
};
fee1 = SUT.AddMonthlyFee(transaction);
transaction.Date = transaction.Date.AddMonths(1);
transaction.Fee = 1.2m;
fee2 = SUT.AddMonthlyFee(transaction);
Assert.AreEqual(fee1, fee2);
// Test if monthly fee is added if the basic fee was 0 and now 1.2.
SUT = new FeeCalculator();
transaction = new TransactionData()
{
Date = new DateTime(2020, 5, 25),
MerchantName = "TELIA",
Fee = 0
};
fee1 = SUT.AddMonthlyFee(transaction);
Assert.AreEqual(0m, fee1);
transaction.Fee = 1.2m;
transaction.Date = new DateTime(2020, 5, 26);
fee2 = SUT.AddMonthlyFee(transaction);
Assert.AreEqual(30.2m, (fee2 - fee1));
}