public void GivenANewCashier_WhenInitializedWithAValidPricelist_ThenTheMerchantIsNotCalled()
{
var merchantSpy = new MerchantSpy();
var _ = new Cashier(GetPricelistWithOneValidItem(1), merchantSpy);
Assert.Equal(0, merchantSpy.ContactQuantity);
}
public void GivenACashierWithPricelist_WhenCheckingOutWithNullCart_ThenTheMerchantIsNotCalled()
{
var merchantSpy = new MerchantSpy();
var cashier = new Cashier(GetPricelistWithOneValidItem(VALID_PRICE), merchantSpy);
Assert.Throws <ArgumentException>(() => cashier.Checkout(null, GetValidCreditCard()));
Assert.Equal(0, merchantSpy.ContactQuantity);
}
public void GivenAValidCashierAndCart_WhenCheckingOutWithNullCreditCardNumber_ThenTheMerchantIsNotCalled()
{
var merchantSpy = new MerchantSpy();
var cart = GetCartWithOneItem();
var cashier = new Cashier(GetPricelistWithOneValidItem(1), merchantSpy);
Assert.Throws <ArgumentException>(() => cashier.Checkout(cart, null));
Assert.Equal(0, merchantSpy.ContactQuantity);
}
public void GivenACashierWithPricelist_WhenCheckingOutCartWithItem_ThenTheMerchantIsCalledOnce()
{
var merchantSpy = new MerchantSpy();
var cart = GetCartWithACatalogWithValidItem();
cart.Add(VALID_ITEM, 1);
var cashier = new Cashier(GetPricelistWithOneValidItem(1), merchantSpy);
cashier.Checkout(cart, GetValidCreditCard());
Assert.Equal(1, merchantSpy.ContactQuantity);
}
public void GivenACashierWithPricelist_WhenCheckingOutCartWithItem_ThenCalculatesTheTotalSum(decimal price)
{
var merchantSpy = new MerchantSpy();
var cart = GetCartWithACatalogWithValidItem();
cart.Add(VALID_ITEM, 1);
var cashier = new Cashier(GetPricelistWithOneValidItem(price), merchantSpy);
cashier.Checkout(cart, GetValidCreditCard());
Assert.Equal(merchantSpy.SavedTotal, price);
}
public void GivenACashierWithPricelist_WhenCheckingOutCartWithInvalidItem_ThenTheMerchantIsNotCalled()
{
var merchantSpy = new MerchantSpy();
var cart = GetCartWithACatalogWithTwoValidItems();
cart.Add(ANOTHER_VALID_ITEM, 1);
var cashier = new Cashier(GetPricelistWithOneValidItem(1), merchantSpy);
Assert.Throws <KeyNotFoundException>(() => cashier.Checkout(cart, GetValidCreditCard()));
Assert.Equal(0, merchantSpy.ContactQuantity);
}
public void GivenACashierWithPricelist_WhenCheckingOutCartWithSeveralItems_ThenCalculatesTheTotalSum()
{
var merchantSpy = new MerchantSpy();
var cart = GetCartWithACatalogWithTwoValidItems();
cart.Add(VALID_ITEM, 1);
cart.Add(ANOTHER_VALID_ITEM, 4);
var cashier = new Cashier(GetPricelistWithTwoValidItems(), merchantSpy);
cashier.Checkout(cart, GetValidCreditCard());
Assert.Equal(22, merchantSpy.SavedTotal);
}
