public void TestWallet_2_Interest()
{
CreditCardInterest.CreditCard[] cardArr = { card3, card4 };
CreditCardInterest.Wallet wallet = new CreditCardInterest.Wallet(cardArr);
Assert.AreEqual(15, wallet.getWalletInterest());
}
public void TestWallet_1_Interest()
{
CreditCardInterest.CreditCard[] cardArr = { card1, card2 };
CreditCardInterest.Wallet wallet = new CreditCardInterest.Wallet(cardArr);
Assert.AreEqual(11.0, wallet.getWalletInterest());
}