public void MultipleProducts_Mocks()
{
// Arrange
var cart = A.Fake <ICart>();
A.CallTo(() => cart.Products).Returns(new [] {
new ProductToPurchase {
ProductId = 1, Quantity = 1
},
new ProductToPurchase {
ProductId = 42, Quantity = 7
},
});
IProductCatalog mockProductCatalog = A.Fake <IProductCatalog>();
A.CallTo(() => mockProductCatalog.LookupPrice(1)).Returns(1m);
A.CallTo(() => mockProductCatalog.LookupPrice(42)).Returns(1.5m);
ITaxCalculator mockTaxCalculator = A.Fake <ITaxCalculator>();
A.CallTo(() => mockTaxCalculator.CalculateTaxes(11.5m)).Returns(1.15m);
// Act
var calculator = new PricingCalculator(mockProductCatalog, mockTaxCalculator);
PricingSummary price = calculator.PriceCart(cart);
// Assert
Assert.That(price.ProductPrices.Count, Is.EqualTo(2));
Assert.That(price.SubTotal, Is.EqualTo(11.5m));
Assert.That(price.Taxes, Is.EqualTo(1.15m));
Assert.That(price.Total, Is.EqualTo(12.65m));
}
public void Setup()
{
var pricingRules = new List <IPriceRule>
{
new EachPriceRule(),
new WeightPriceRule()
};
var pricingCalculator = new PricingCalculator(pricingRules);
_cart = new CartService(pricingCalculator);
}
public void PricingCalculator_Calculate_Args_Null_Items()
{
// ARRANGE
var calculator = new PricingCalculator();
// ACT
Exception ex = Assert.Throws <ArgumentNullException>(
() => calculator.Calculate(null));
// ASSERT
Assert.Equal("Value cannot be null. (Parameter 'items')", ex.Message);
}
public void CalculatePricing_When_No_Promotions()
{
// ARRANGE
var cart = TestData.Cart1;
var calculator = new PricingCalculator();
// ACT
var result = calculator.Calculate(cart);
// ASSERT
Assert.Equal(24.77M, result.TotalPrice);
Assert.Equal(0M, result.TotalDiscount);
Assert.Equal(result.TotalPrice, result.TotalPriceToPay);
}
public void CalculatePricing_With_BuyALotGetADiscount_Promotion()
{
// ARRANGE
var cart = TestData.Cart1;
var calculator = new PricingCalculator();
// ACT
var result = calculator.Calculate(
cart,
new BuyALotGetADiscountPromotion(3, 2) // buy at least 3 items and get 2% of discount
);
// ASSERT
Assert.Equal(24.77M, result.TotalPrice);
Assert.Equal(0.4954M, result.TotalDiscount);
Assert.Equal(result.TotalPriceToPay, result.TotalPrice - result.TotalDiscount);
}
public void CalculatePricing_With_Buy3GetOneFree_Promotion()
{
// ARRANGE
var cart = TestData.Cart1;
var calculator = new PricingCalculator();
// ACT
var result = calculator.Calculate(
cart,
new BuyManyGetSomeFreePromotion(3, 1, "kg", new Guid(TestData.ApplesSku)) // get 1kg of apples free for each 3kg (buy 3 get 1 free)
);
// ASSERT
Assert.Equal(24.77M, result.TotalPrice);
Assert.Equal(1.55M, result.TotalDiscount);
Assert.Equal(result.TotalPriceToPay, result.TotalPrice - result.TotalDiscount);
}
public void CalculatePricing_With_Two_Promotions()
{
// ARRANGE
var cart = TestData.Cart1;
var calculator = new PricingCalculator();
// ACT
var result = calculator.Calculate(
cart,
new BuyManyGetSomeFreePromotion(3, 1, "kg", new Guid(TestData.ApplesSku)), // get 1kg of apples free for each 3kg (buy 3 get 1 free)
new BuyALotGetADiscountPromotion(3, 2) // buy at least 3 items and get 2% of discount
);
// ASSERT
Assert.Equal(24.77M, result.TotalPrice);
Assert.Equal(2.0454M, result.TotalDiscount);
Assert.Equal(result.TotalPriceToPay, result.TotalPrice - result.TotalDiscount);
}
public void MissingPrice2()
{
var cart = new Cart();
cart.IncludeProduct(1, 1);
cart.IncludeProduct(42, 7);
var catalog = new ProductCatalog();
catalog.SetPrice(1, 1m);
var taxCalculator = new PercentageTaxCalculatorStub(0.1m);
var calculator = new PricingCalculator(catalog, taxCalculator);
PricingSummary price = calculator.PriceCart2(cart);
Assert.That(price.ProductPrices.Count, Is.EqualTo(1));
Assert.That(price.SubTotal, Is.EqualTo(1m));
Assert.That(price.Taxes, Is.EqualTo(0.1m));
Assert.That(price.Total, Is.EqualTo(1.1m));
}
public void Setup()
{
pricingCalculator = new PricingCalculator();
}
