public void CupOfCoffee_ShouldSaveFifteenThousandDollars()
{
//$4 cup of coffee equals $20 a week
var expensesService = new ExpensesService(20);
var amountSavedByNotSpending = expensesService.CalculateWeeklyExpenses();
Assert.AreEqual(15040, amountSavedByNotSpending);
}
private static void CalculateExpensesOver10Years()
{
Console.WriteLine("*** Calculating Expesnses ***");
Console.WriteLine("*** The following calculation assumes a 7% growth over 10 years. ***");
Console.WriteLine("Is the following expense a monthly (M), or weekly (W) expense?");
var expenseType = Console.ReadLine().ToUpper();
if (expenseType != "W" && expenseType != "M")
{
return;
}
Console.WriteLine("Please enter the recurring expense amount");
var expenseAmount = decimal.Parse(Console.ReadLine());
var expensesService = new ExpensesService(expenseAmount);
var amountSaved = expenseType == "M" ?
expensesService.CalculateMonthlyExpenses() :
expensesService.CalculateWeeklyExpenses();
Console.WriteLine($"If you invested your ${expenseAmount} instead, you would save ${amountSaved} after 10 years!");
}