public void OnePersonOneWalletThreeCards()
{
var card1 = new CreditCard(CreditCardType.Visa);
var card2 = new CreditCard(CreditCardType.Master);
var card3 = new CreditCard(CreditCardType.Discover);
card1.Balance = 100;
card2.Balance = 100;
card3.Balance = 100;
var wallet = new Wallet {
Cards = new List <CreditCard> {
card1, card2, card3
}
};
var person = new Person {
Wallets = new List <Wallet> {
wallet
}
};
var interest1 = _cardCalculator.GetInterest(card1);
var interest2 = _cardCalculator.GetInterest(card2);
var interest3 = _cardCalculator.GetInterest(card3);
var personInterest = _personCalculator.GetInterest(person);
Assert.AreEqual(10, interest1);
Assert.AreEqual(5, interest2);
Assert.AreEqual(1, interest3);
Assert.AreEqual(16, personInterest);
}
public double GetInterest(Wallet wallet)
{
if (wallet == null)
{
return(0);
}
if (wallet.Cards == null || !wallet.Cards.Any())
{
return(0);
}
return(wallet.Cards.Select(x => _calculator.GetInterest(x)).Sum());
}