public void MaxiSavingsAccount()
{
Bank bank = new Bank();
MaxiSavingsAccount maxiSavingsAccount = new MaxiSavingsAccount();
bank.AddCustomer(new Customer("Bill").OpenAccount(maxiSavingsAccount));
maxiSavingsAccount.Deposit(3000.0m);
Assert.AreEqual(170, bank.totalInterestPaid());
// change the interest strategy
maxiSavingsAccount.SetInterestStrategy(new MaxiSavingsAccountFivePercentInterestStrategy());
Assert.AreEqual(150, bank.totalInterestPaid());
}
