public void Execute()
{
decimal principal = Input.DecimalParse(message: "Enter the principal: ");
decimal rateOfInterest = Input.DecimalParse(message: "Enter the rate of interest: ");
int numberOfYears = Input.Parse(message: "Enter the number of years: ");
var amount = SimpleInterest.Calculate(principal, numberOfYears, rateOfInterest);
Console.WriteLine("After {0} years at {1}%, the investment will be worth {2}.",
numberOfYears,
rateOfInterest,
amount.ToString("C", new CultureInfo("en-GB")));
}
public void Interest_Over_Multiple_Years()
{
decimal amount = SimpleInterest.Calculate(principalAmount: 1500m, year: 4, interest: 4.3m);
Assert.That(amount, Is.EqualTo(1758m));
}
public void Interest_Over_One_Year()
{
decimal amount = SimpleInterest.Calculate(principalAmount: 10m, year: 1, interest: 50m);
Assert.That(amount, Is.EqualTo(15m));
}
public void Zero_Interest_Over_Zero_Years()
{
decimal amount = SimpleInterest.Calculate(0m, 0, 0m);
Assert.That(amount, Is.EqualTo(0m));
}
