public void CalculateInterest_TestCase1_calculate_simple_interest_for_card_and_holder()
{
var cardHolder = new CreditCardHolder
{
Wallets = new List <Wallet>
{
new Wallet
{
CreditCards = new List <CreditCard>
{
new VisaCreditCard {
Balance = 100
},
new MasterCardCreditCard {
Balance = 100
},
new DiscoverCreditCard {
Balance = 100
}
}
}
}
};
_logic.CalculateInterestForHolder(cardHolder);
var creditCards = cardHolder.Wallets.First().CreditCards.ToList();
Assert.Equal(10, creditCards[0].SimpleInterest); // per card
Assert.Equal(5, creditCards[1].SimpleInterest);
Assert.Equal(1, creditCards[2].SimpleInterest);
Assert.Equal(16, cardHolder.TotalInterest); // for card holder
}
public void CalculateInterest_TestCase3_calculate_simple_interest_for_wallet_and_holder_for_2_card_holders(
CreditCardHolder cardHolder, double walletInterest, double cardHolderInterest)
{
_logic.CalculateInterestForHolder(cardHolder);
Assert.Equal(walletInterest, cardHolder.Wallets.First().TotalInterest);
Assert.Equal(cardHolderInterest, cardHolder.TotalInterest);
}
/// <summary>
/// Calculate interest for all cards and all wallets of the credit card holder
/// </summary>
/// <param name="person">The person to calculate interest for</param>
public void CalculateInterestForHolder(CreditCardHolder person)
{
foreach (Wallet wallet in person.Wallets)
{
foreach (CreditCard card in wallet.CreditCards)
{
card.InterestRate = _interestRates.First(r => r.Key == card.Type).Value;
CalculateInterestForCard(card);
wallet.TotalInterest += card.SimpleInterest;
}
person.TotalInterest += wallet.TotalInterest;
}
}
static void Main(string[] args)
{
ICreditCardInterestLogic interestLogic = new CreditCardInterestLogic();
var cardHolder1 = new CreditCardHolder
{
Wallets = new List <Wallet>
{
new Wallet
{
CreditCards = new List <CreditCard>
{
new VisaCreditCard {
Balance = 100
},
new MasterCardCreditCard {
Balance = 100
},
new DiscoverCreditCard {
Balance = 100
}
}
}
}
};
interestLogic.CalculateInterestForHolder(cardHolder1);
Console.WriteLine("\nTEST CASE 1");
var cards = cardHolder1.Wallets.First().CreditCards.ToList();
cards.ForEach(c => Console.WriteLine($"Interest for {c.Type} card: {c.SimpleInterest}"));
Console.WriteLine($"Total interest for card holder: {cardHolder1.TotalInterest}");
var cardHolder2 = new CreditCardHolder
{
Wallets = new List <Wallet>
{
new Wallet
{
CreditCards = new List <CreditCard>
{
new VisaCreditCard {
Balance = 100
},
new DiscoverCreditCard {
Balance = 100
}
}
},
new Wallet
{
CreditCards = new List <CreditCard>
{
new MasterCardCreditCard {
Balance = 100
},
}
}
}
};
interestLogic.CalculateInterestForHolder(cardHolder2);
Console.WriteLine("\nTEST CASE 2");
var case2Wallets = cardHolder2.Wallets.ToList();
case2Wallets.ForEach(w => Console.WriteLine($"Interest for wallet: {w.TotalInterest}"));
Console.WriteLine($"Total interest for card holder: {cardHolder2.TotalInterest}");
var cardHolderGroups3 = new List <CreditCardHolder>
{
new CreditCardHolder
{
Wallets = new List <Wallet>
{
new Wallet
{
CreditCards = new List <CreditCard>
{
new MasterCardCreditCard {
Balance = 100
},
new VisaCreditCard {
Balance = 100
}
}
}
}
},
new CreditCardHolder
{
Wallets = new List <Wallet>
{
new Wallet
{
CreditCards = new List <CreditCard>
{
new VisaCreditCard {
Balance = 100
},
new MasterCardCreditCard {
Balance = 100
},
}
}
}
}
};
Console.WriteLine("\nTEST CASE 3");
for (int i = 0; i < cardHolderGroups3.Count; i++)
{
interestLogic.CalculateInterestForHolder(cardHolderGroups3[i]);
var case3Wallets = cardHolderGroups3[i].Wallets.ToList();
case3Wallets.ForEach(w => Console.WriteLine($"Interest for card holder {i + 1} wallet: {w.TotalInterest}"));
Console.WriteLine($"Total interest for card holder {i + 1}: {cardHolderGroups3[i].TotalInterest}\n");
}
}
/// <summary>
/// Instantiate the object and assigns default values of it members
/// </summary>
public CreditCardProcessAccessLayer()
{
cardHolder = new CreditCardHolder();
}
