public void AddOrderItem_MultipleProduct_NoDiscount()
{
//Arrange
var A = new Product(Guid.NewGuid(), "A", 1.25m);
var pricingRuleForA = new VolumePricingRule(Guid.NewGuid(), A.Id, 3, 3.00m);
_pricingRulesRepository.GetByProductId(A.Id).Returns(pricingRuleForA);
var C = new Product(Guid.NewGuid(), "C", 1.00m);
var pricingRuleForC = new VolumePricingRule(Guid.NewGuid(), C.Id, 6, 5.00m);
_pricingRulesRepository.GetByProductId(C.Id).Returns(pricingRuleForC);
var order = new Order(Guid.NewGuid(), _pricingStrategyFactory);
//Act
order.AddOrderItem(A, 2);
order.AddOrderItem(C, 5);
Price expectedTotalPrice = 7.50m;
//Assert
Assert.Equal(expectedTotalPrice, order.GetTotalPrice());
}
public void T03_AddOrderItem_SingleProduct_ShouldApplyDiscount()
{
//Arrange
var productA = new Product(Guid.NewGuid(), "A", 0.50m);
var pricingRuleForC = new VolumePricingRule(Guid.NewGuid(), productA.ProductId, 3, 1.30m);
_pricingRulesRepository.GetByProductId(productA.ProductId).Returns(pricingRuleForC);
var order = new CheckOutOrder(Guid.NewGuid(), _pricingStrategyFactory);
//Act
order.AddOrderItem(productA, 10);
decimal expectedTotalPrice = 4.40m;
//Assert
Assert.Equal(expectedTotalPrice, order.GetTotalPrice());
}
public void AddOrderItem_SingleProduct_ShouldApplyDiscount()
{
//Arrange
var C = new Product(Guid.NewGuid(), "C", 1.00m);
var pricingRuleForC = new VolumePricingRule(Guid.NewGuid(), C.Id, 6, 5.00m);
_pricingRulesRepository.GetByProductId(C.Id).Returns(pricingRuleForC);
var order = new Order(Guid.NewGuid(), _pricingStrategyFactory);
//Act
order.AddOrderItem(C, 7);
Price expectedTotalPrice = 6.00m;
//Assert
Assert.Equal(expectedTotalPrice, order.GetTotalPrice());
}
public void AddOrderItem_MultipleProduct_MultipleUnits_ShouldApplyDiscount()
{
//Arrange
var A = new Product(Guid.NewGuid(), "A", 1.25m);
var pricingRuleForA = new VolumePricingRule(Guid.NewGuid(), A.Id, 3, 3.00m);
_pricingRulesRepository.GetByProductId(A.Id).Returns(pricingRuleForA);
var B = new Product(Guid.NewGuid(), "B", 4.25m);
_pricingRulesRepository.GetByProductId(B.Id).Returns(r => null);
var C = new Product(Guid.NewGuid(), "C", 1.00m);
var pricingRuleForC = new VolumePricingRule(Guid.NewGuid(), C.Id, 6, 5.00m);
_pricingRulesRepository.GetByProductId(C.Id).Returns(pricingRuleForC);
var D = new Product(Guid.NewGuid(), "D", 0.75m);
_pricingRulesRepository.GetByProductId(D.Id).Returns(r => null);
var order = new Order(Guid.NewGuid(), _pricingStrategyFactory);
//Act
order.AddOrderItem(A);
order.AddOrderItem(B);
order.AddOrderItem(C);
order.AddOrderItem(D);
order.AddOrderItem(A);
order.AddOrderItem(B);
order.AddOrderItem(A);
Price expectedTotalPrice = 13.25m;
//Assert
Assert.Equal(expectedTotalPrice, order.GetTotalPrice());
}
public void T04_AddOrderItem_MultipleProduct_MultipleUnits_ShouldApplyDiscount()
{
//Arrange
var productA = new Product(Guid.NewGuid(), "A", 0.50m);
var pricingRuleForA = new VolumePricingRule(Guid.NewGuid(), productA.ProductId, 3, 1.30m);
_pricingRulesRepository.GetByProductId(productA.ProductId).Returns(pricingRuleForA);
var productB = new Product(Guid.NewGuid(), "B", 0.30m);
var pricingRuleForB = new VolumePricingRule(Guid.NewGuid(), productB.ProductId, 2, 0.45m);
_pricingRulesRepository.GetByProductId(productB.ProductId).Returns(pricingRuleForB);
var productC = new Product(Guid.NewGuid(), "C", 0.70m);
_pricingRulesRepository.GetByProductId(productC.ProductId).Returns(r => null);
var productD = new Product(Guid.NewGuid(), "D", 0.20m);
_pricingRulesRepository.GetByProductId(productD.ProductId).Returns(r => null);
var order = new CheckOutOrder(Guid.NewGuid(), _pricingStrategyFactory);
//Act
order.AddOrderItem(productA);
order.AddOrderItem(productB);
order.AddOrderItem(productC);
order.AddOrderItem(productD);
order.AddOrderItem(productA);
order.AddOrderItem(productB);
order.AddOrderItem(productA);
decimal expectedTotalPrice = 2.65m;
//Assert
Assert.Equal(expectedTotalPrice, order.GetTotalPrice());
}
public void SetPricing(int count, decimal price)
{
if (count <= 0)
{
throw new InvalidProductCountException(count);
}
if (count == 1)
{
this.SetPricing(price);
return;
}
if (price <= 0m)
{
throw new InvalidPriceException(price);
}
var pricingRule = new VolumePricingRule(this.Id, count, price);
this._volumePricingRule = pricingRule;
}
