public int PurchaseItem(VendingStock stock)
{
var stockItems = _vendingStockRepository.ReduceStock(stock, ReduceStock);
var stockItem = stockItems.Single(x => x.Item == stock);
return(stockItem.AvailableStock);
}
public int AddInventory(VendingStock stock, int addedInventory)
{
var stockItems = _vendingStockRepository.AddInventory(stock, addedInventory);
var stockItem = stockItems.Single(x => x.Item == stock);
return(stockItem.AvailableStock);
}
public IEnumerable <StockItem> ReduceStock(VendingStock item, int reduceAmount)
{
var stockItem = _stock.Single(x => x.Item == item);
stockItem.AvailableStock -= reduceAmount;
return(_stock);
}
public IEnumerable <StockItem> AddInventory(VendingStock item, int addedInventory)
{
var stockItem = _stock.Single(x => x.Item == item);
stockItem.AvailableStock += addedInventory;
return(_stock);
}
public void DepositChangeWillIncreaseTotalAvailableChangeByStockCost()
{
_stock = VendingStock.Pop;
var actual = _changeStatus.DepositChange(_stock.Cost);
Assert.AreEqual(_stock.Cost, actual);
}
public void MakeChangeWillReturnChangeInHighestDenominatonsPossible()
{
_stock = VendingStock.Chips;
var insertedAmount = 1.25m;
var expectedResults = new List <Coin> {
Coin.Quarter, Coin.Quarter, Coin.Quarter
};
var actual = _changeStatus.MakeChange(_stock.Cost, insertedAmount);
CollectionAssert.AreEquivalent(expectedResults, actual);
}
public void MakeChangeWillReturnModulusOfInsertedValueInCorrectDenominations()
{
_stock = VendingStock.Candy;
var insertedAmount = 1.00m;
var expectedResults = new List <Coin> {
Coin.Quarter, Coin.Dime
};
var actual = _changeStatus.MakeChange(_stock.Cost, insertedAmount);
CollectionAssert.AreEquivalent(expectedResults, actual);
}
public string SelectItemForPurchase(VendingStock vendingStock, decimal tenderedAmount)
{
if (_stockStatus.HasAvailableItem(vendingStock))
{
if (_itemValidator.CanPurchase(vendingStock, tenderedAmount))
{
_changeStatus.DepositChange(vendingStock.Cost);
_changeStatus.MakeChange(vendingStock.Cost, tenderedAmount);
_stockStatus.PurchaseItem(vendingStock);
return("THANK YOU");
}
return(string.Format("PRICE ${0}", vendingStock.Cost));
}
return("SOLD OUT");
}
public bool CanPurchase(VendingStock stock, decimal amount)
{
return(amount >= stock.Cost);
}
public StockItem(VendingStock item, int availableStock)
{
Item = item;
AvailableStock = availableStock;
}
static VendingStock()
{
Chips = new VendingStock(0.50m);
Candy = new VendingStock(0.65m);
Pop = new VendingStock(1.00m);
}
public bool HasFundsAvailable(VendingStock item, decimal funds)
{
var stock = _vendingStockRepository.GetInventory();
return(stock.Single(x => x.Item == item).Item.Cost <= funds);
}
public bool HasAvailableItem(VendingStock item)
{
var stock = _vendingStockRepository.GetInventory();
return(stock.Single(x => x.Item == item).AvailableStock >= 1);
}
