public void When_I_generate_a_receipt_with_quantity_discount()
{
var sut = new ReceiptGenerator();
var productCatalog = new ProductCatalog();
productCatalog.AddProduct("apple", 0.75m);
productCatalog.AddProduct("banana", 1.00m);
productCatalog.AddQuantityDiscount("apple", 3, 2.00m);
var transaction = new CheckoutTransaction(productCatalog, new Promotions(new List <IPromotionalDiscountRule>()
{
new AdditionalItemDiscountRule(productCatalog), new QuantityDiscountRule(productCatalog)
}));
transaction.AddItem("apple");
transaction.AddItem("banana");
transaction.AddItem("apple");
transaction.AddItem("apple");
transaction.AddItem("apple");
transaction.AddItem("apple");
transaction.AddItem("apple");
transaction.AddItem("apple");
var actual = sut.Generate(transaction);
Assert.That(actual, Is.EqualTo("Receipt:\n7 apple @ $0.75 is $5.25\n***Discount on apple: Buy 3 apple for $2.00, New Price $4.75, Savings $0.50\n1 banana @ $1.00 is $1.00\nTotal is $5.75"));
}
public void When_quantity_discount_is_added()
{
var sut = new ProductCatalog();
sut.AddQuantityDiscount("apple", 3, 2.00m);
Assert.That(sut.QuantityDiscounts.Count(), Is.EqualTo(1));
Assert.True(sut.QuantityDiscounts.First(p => p.Barcode == "apple").DiscountPrice == 2.00m);
Assert.True(sut.QuantityDiscounts.First(p => p.Barcode == "apple").DiscountQuantity == 3.00m);
}
public void When_constructed_with_applicable_quantity_discount_but_no_matching_items()
{
var productCatalog = new ProductCatalog();
productCatalog.AddProduct("apple", 0.75m);
productCatalog.AddProduct("banana", 1.00m);
productCatalog.AddQuantityDiscount("apple", 2, 2.00m);
var sut = new Bill(new List<string>() { "banana" }, productCatalog, new Promotions(new List<IPromotionalDiscountRule>() { new AdditionalItemDiscountRule(productCatalog), new QuantityDiscountRule(productCatalog)}));
Assert.That(sut.Total, Is.EqualTo(1.00m));
Assert.That(sut.LineItems.Count(), Is.EqualTo(1));
}
public void Begin()
{
if (!_cartData.Any())
{
_consoleWriter.WriteLine("Error cart is empty");
return;
}
var productCatalog = new ProductCatalog();
foreach (var productCatalogLine in _productCatalogData)
{
var parts = productCatalogLine.Split(',');
if (parts[0] == "PRODUCT")
{
var barcode = parts[1].Trim();
var price = Decimal.Parse(parts[2]);
productCatalog.AddProduct(barcode, price);
}
else if (parts[0] == "QUANTITY_DISCOUNT")
{
var barcode = parts[1].Trim();
var quantity = Convert.ToInt32(parts[2]);
var discountPrice = Convert.ToDecimal(parts[3]);
productCatalog.AddQuantityDiscount(barcode, quantity, discountPrice);
}
else if (parts[0] == "ADDITIONAL_ITEM_DISCOUNT")
{
var barcode = parts[1].Trim();
var quantity = Convert.ToInt32(parts[2]);
var quantityDiscounted = Convert.ToInt32(parts[3]);
var dicountPercentage = Convert.ToDouble(parts[4]);
productCatalog.AddAdditionalItemDiscount(barcode, quantity, quantityDiscounted, dicountPercentage);
}
}
var promotionalDiscountRules = new List <IPromotionalDiscountRule>()
{
new AdditionalItemDiscountRule(productCatalog), new QuantityDiscountRule(productCatalog)
};
var transaction = new CheckoutTransaction(productCatalog, new Promotions(promotionalDiscountRules));
foreach (var cartLine in _cartData)
{
transaction.AddItem(cartLine);
}
var reportGenerator = new ReceiptGenerator();
var receipt = reportGenerator.Generate(transaction);
_consoleWriter.WriteLine(receipt);
}
public void When_promotion_applies()
{
var productCatalog = new ProductCatalog();
productCatalog.AddQuantityDiscount("apple", 3, 2);
productCatalog.AddProduct("apple", 0.75m);
var sut = new QuantityDiscountRule(productCatalog);
var promotions = new Promotions(new List<IPromotionalDiscountRule>() { sut });
var lineItem = new LineItem("apple", 7, productCatalog, promotions);
var actual = sut.PromotionApplies(lineItem);
Assert.That(actual, Is.True);
}
public void When_calculating_rule()
{
var productCatalog = new ProductCatalog();
productCatalog.AddQuantityDiscount("apple", 3, 2);
productCatalog.AddProduct("apple", 0.75m);
var sut = new QuantityDiscountRule(productCatalog);
var promotions = new Promotions(new List<IPromotionalDiscountRule>() { sut });
var lineItem = new LineItem("apple", 7, productCatalog, promotions);
var actual = sut.Calculate(lineItem);
Assert.That(actual.DiscountedSubTotal, Is.EqualTo(4.75m));
Assert.That(actual.DiscountNote, Is.EqualTo("***Discount on apple: Buy 3 apple for $2.00, New Price $4.75, Savings $0.50"));
}
public void When_constructed_with_quantity_discount()
{
var productCatalog = new ProductCatalog();
productCatalog.AddProduct("apple", 0.75m);
productCatalog.AddProduct("banana", 1.00m);
productCatalog.AddQuantityDiscount("apple", 3, 2.00m);
var sut = new LineItem("apple", 7, productCatalog, new Promotions(new List<IPromotionalDiscountRule>() { new AdditionalItemDiscountRule(productCatalog), new QuantityDiscountRule(productCatalog) }));
Assert.That(sut.Barcode, Is.EqualTo("apple"));
Assert.That(sut.Quantity, Is.EqualTo(7));
Assert.That(sut.PricePerUnit, Is.EqualTo(0.75m));
Assert.That(sut.SubTotal, Is.EqualTo(5.25m));
Assert.That(sut.DiscountedSubTotal, Is.EqualTo(4.75m));
Assert.That(sut.DiscountNote, Is.EqualTo("***Discount on apple: Buy 3 apple for $2.00, New Price $4.75, Savings $0.50"));
}
public void When_promotion_applies()
{
var productCatalog = new ProductCatalog();
productCatalog.AddQuantityDiscount("apple", 3, 2);
productCatalog.AddProduct("apple", 0.75m);
var sut = new QuantityDiscountRule(productCatalog);
var promotions = new Promotions(new List <IPromotionalDiscountRule>()
{
sut
});
var lineItem = new LineItem("apple", 7, productCatalog, promotions);
var actual = sut.PromotionApplies(lineItem);
Assert.That(actual, Is.True);
}
public void When_constructed_with_applicable_quantity_discount_but_no_matching_items()
{
var productCatalog = new ProductCatalog();
productCatalog.AddProduct("apple", 0.75m);
productCatalog.AddProduct("banana", 1.00m);
productCatalog.AddQuantityDiscount("apple", 2, 2.00m);
var sut = new Bill(new List <string>()
{
"banana"
}, productCatalog, new Promotions(new List <IPromotionalDiscountRule>()
{
new AdditionalItemDiscountRule(productCatalog), new QuantityDiscountRule(productCatalog)
}));
Assert.That(sut.Total, Is.EqualTo(1.00m));
Assert.That(sut.LineItems.Count(), Is.EqualTo(1));
}
public void When_calculating_rule()
{
var productCatalog = new ProductCatalog();
productCatalog.AddQuantityDiscount("apple", 3, 2);
productCatalog.AddProduct("apple", 0.75m);
var sut = new QuantityDiscountRule(productCatalog);
var promotions = new Promotions(new List <IPromotionalDiscountRule>()
{
sut
});
var lineItem = new LineItem("apple", 7, productCatalog, promotions);
var actual = sut.Calculate(lineItem);
Assert.That(actual.DiscountedSubTotal, Is.EqualTo(4.75m));
Assert.That(actual.DiscountNote, Is.EqualTo("***Discount on apple: Buy 3 apple for $2.00, New Price $4.75, Savings $0.50"));
}
public void When_constructed_with_quantity_discount()
{
var productCatalog = new ProductCatalog();
productCatalog.AddProduct("apple", 0.75m);
productCatalog.AddProduct("banana", 1.00m);
productCatalog.AddQuantityDiscount("apple", 3, 2.00m);
var sut = new LineItem("apple", 7, productCatalog, new Promotions(new List <IPromotionalDiscountRule>()
{
new AdditionalItemDiscountRule(productCatalog), new QuantityDiscountRule(productCatalog)
}));
Assert.That(sut.Barcode, Is.EqualTo("apple"));
Assert.That(sut.Quantity, Is.EqualTo(7));
Assert.That(sut.PricePerUnit, Is.EqualTo(0.75m));
Assert.That(sut.SubTotal, Is.EqualTo(5.25m));
Assert.That(sut.DiscountedSubTotal, Is.EqualTo(4.75m));
Assert.That(sut.DiscountNote, Is.EqualTo("***Discount on apple: Buy 3 apple for $2.00, New Price $4.75, Savings $0.50"));
}
