public void SelectProductWithExcessCreditGetAppropriateChange()
{
VendingMachine.InsertCoin("Quarter");
VendingMachine.InsertCoin("Quarter");
VendingMachine.InsertCoin("Nickle");
VendingMachine.InsertCoin("Dime");
VendingMachine.InsertCoin("Dime");
VendingMachine.InsertCoin("Quarter");
VendingMachine.ButtonPressed(2); //Cost of .5 total is $1.00
var change = VendingMachine.GetValueOfCoinReturn();
Assert.AreEqual(change, 0.5);
}