public void TestProcessMonthlyInterest()
{
TestSnapShotDailyBalance();
InterestController interestController = new InterestController();
double interestRate = interestController.GetInterestRate(_unitUnderTest);
_unitUnderTest.ProcessMonthlyInterest(interestRate);
Assert.AreEqual(105 + ((150.0 + 105.0) / 2 * interestRate) /*108.1875*/, _unitUnderTest.GetBalance());
Account oldAccount = new Account(150, new DateTime(DateTime.Now.AddYears(-7).Ticks));
oldAccount.SnapShotDailyBalance();
oldAccount.Withdraw(45);
oldAccount.SnapShotDailyBalance();
interestRate = interestController.GetInterestRate(oldAccount);
oldAccount.ProcessMonthlyInterest(interestRate);
Assert.AreEqual(105 + ((150.0 + 105.0) / 2 * interestRate), oldAccount.GetBalance());
Account newAccountWHighBalance = new Account(70000);
newAccountWHighBalance.SnapShotDailyBalance();
newAccountWHighBalance.Deposit(60000);
newAccountWHighBalance.SnapShotDailyBalance();
interestRate = interestController.GetInterestRate(newAccountWHighBalance);
newAccountWHighBalance.ProcessMonthlyInterest(interestRate);
Assert.AreEqual(130000 + ((70000.0 + 130000.0) / 2 * interestRate) /*132500*/, newAccountWHighBalance.GetBalance());
Account oldAccountWHighBalance =
new Account(70000, new DateTime(DateTime.Now.AddYears(-7).Ticks));
oldAccountWHighBalance.SnapShotDailyBalance();
oldAccountWHighBalance.Deposit(60000);
oldAccountWHighBalance.SnapShotDailyBalance();
interestRate = interestController.GetInterestRate(oldAccountWHighBalance);
oldAccountWHighBalance.ProcessMonthlyInterest(interestRate);
Assert.AreEqual(130000 + ((70000.0 + 130000.0) / 2 * interestRate), oldAccountWHighBalance.GetBalance());
}