public void SelectProduct_HavingMoreThanEnoughCoins_GivenCandy_ReturnsCoins()
{
// Arrange
const Products product = Products.Candy;
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Dime);
CoinHelper.AddCoin(Denominations.Dime);
CoinHelper.AddCoin(Denominations.Dime);
CoinHelper.AddCoin(Denominations.Dime);
CoinHelper.AddCoin(Denominations.Nickel);
CoinHelper.AddCoin(Denominations.Nickel);
CoinHelper.AddCoin(Denominations.Nickel);
CoinHelper.AddCoin(Denominations.Nickel);
// Act
var result = _sut.SelectProduct(product);
// Assert
Assert.AreEqual(3, SessionHelper.ReturnCoins[Denominations.Quarter]);
Assert.AreEqual(2, SessionHelper.ReturnCoins[Denominations.Dime]);
Assert.AreEqual(.95M, SessionHelper.ReturnCoins.TotalValue());
Assert.IsNotNull(result);
Assert.AreEqual(MessageConstants.ThankYou, result);
}
public void SelectProduct_HavingSoldOutCandy_GivenCandy_ReturnsCoins()
{
// Arrange
const Products product = Products.Candy;
SessionHelper.Inventory[product] = 0;
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Dime);
CoinHelper.AddCoin(Denominations.Nickel);
// Act
var result = _sut.SelectProduct(product);
// Assert
Assert.AreEqual(2, SessionHelper.CurrentCoins[Denominations.Quarter]);
Assert.AreEqual(1, SessionHelper.CurrentCoins[Denominations.Dime]);
Assert.AreEqual(1, SessionHelper.CurrentCoins[Denominations.Nickel]);
Assert.AreEqual(Products.Candy.Price(), SessionHelper.CurrentCoins.TotalValue());
Assert.AreEqual(2, SessionHelper.TotalCoins[Denominations.Quarter]);
Assert.AreEqual(1, SessionHelper.TotalCoins[Denominations.Dime]);
Assert.AreEqual(1, SessionHelper.TotalCoins[Denominations.Nickel]);
Assert.AreEqual(Products.Candy.Price(), SessionHelper.TotalCoins.TotalValue());
Assert.AreEqual(decimal.Zero, SessionHelper.ReturnCoins.TotalValue());
Assert.IsNotNull(result);
Assert.AreEqual(MessageConstants.SoldOut, result);
}
public string AcceptCoins(Coin coin)
{
coin.Denomination = DetermineDenomination(coin);
switch (coin.Denomination)
{
case Denominations.Penny:
case Denominations.Unknown:
{
CoinHelper.AddReturnCoin(coin.Denomination);
break;
}
case Denominations.Nickel:
case Denominations.Dime:
case Denominations.Quarter:
{
CoinHelper.AddCoin(coin.Denomination);
break;
}
}
var totalValue = SessionHelper.CurrentCoins.TotalValue();
return(totalValue > decimal.Zero ? $"{totalValue:C2}" : MessageConstants.InsertCoin);
}
public void SelectProduct_HavingNotEnoughCoins_GivenCandy_ReturnsCandyPrice()
{
// Arrange
const Products product = Products.Candy;
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Dime);
// Act
var result = _sut.SelectProduct(product);
// Assert
Assert.IsNotNull(result);
Assert.AreEqual(string.Format(MessageConstants.Price, product.Price()), result);
}
public void SelectProduct_HavingNoExactChange_GivenCandy_ReturnsExactChangeMessage()
{
// Arrange
const Products product = Products.Candy;
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Quarter);
// Act
var result = _sut.SelectProduct(product);
// Assert
Assert.AreEqual(3, SessionHelper.CurrentCoins[Denominations.Quarter]);
Assert.AreEqual(.75M, SessionHelper.CurrentCoins.TotalValue());
Assert.AreEqual(3, SessionHelper.TotalCoins[Denominations.Quarter]);
Assert.AreEqual(.75M, SessionHelper.TotalCoins.TotalValue());
Assert.AreEqual(decimal.Zero, SessionHelper.ReturnCoins.TotalValue());
Assert.IsNotNull(result);
Assert.AreEqual(MessageConstants.ExactChange, result);
}
public void SelectProduct_HavingExactCoins_GivenCandy_UpdatesInventoryClearsCurrentCoinsAndReturnsThankYou()
{
// Arrange
const Products product = Products.Candy;
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Quarter);
CoinHelper.AddCoin(Denominations.Dime);
CoinHelper.AddCoin(Denominations.Nickel);
// Act
var result = _sut.SelectProduct(product);
// Assert
Assert.AreEqual(2, SessionHelper.Inventory[Products.Candy]);
Assert.AreEqual(3, SessionHelper.Inventory[Products.Chips]);
Assert.AreEqual(3, SessionHelper.Inventory[Products.Cola]);
Assert.AreEqual(decimal.Zero, SessionHelper.CurrentCoins.TotalValue());
Assert.AreEqual(.65M, SessionHelper.TotalCoins.TotalValue());
Assert.IsNotNull(result);
Assert.AreEqual(MessageConstants.ThankYou, result);
}