public void PlaceOrder_AllProductsInStock_DoesNotThrowException()
{
// Arrange
_customerRepository.Stub(c => c.Get(Arg<int>.Is.Anything)).Return(new Customer());
_orderFulfillmentService.Stub(or => _orderFulfillmentService.Fulfill(Arg<Order>.Is.Anything)).Return(new OrderConfirmation());
_taxRateService.Stub(t => t.GetTaxEntries(Arg<String>.Is.Anything, Arg<String>.Is.Anything)).Return(new List<TaxEntry> { new TaxEntry() });
_productRepository.Expect(pr => pr.IsInStock("apple")).Return(true);
_productRepository.Expect(pr => pr.IsInStock("apple2")).Return(true);
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
CustomerId = 1,
OrderItems = new List<OrderItem>
{
new OrderItem { Product = new Product { Sku = "apple" } },
new OrderItem { Product = new Product { Sku = "apple2" } }
}
};
// Act
var result = orderService.PlaceOrder(order);
// Assert
_productRepository.VerifyAllExpectations();
}
public OrderSummary PlaceOrder(Order order)
{
List<OrderItem> orderItems = order.OrderItems;
Customer customer = RetrieveCustomer(order.CustomerId);
if (OrderIsValid(order, orderItems))
{
OrderConfirmation orderConfirmation =_orderFulfillmentService.Fulfill(order);
IEnumerable<TaxEntry> applicableTaxes = RetrieveTaxEntries(customer).ToList();
decimal netTotal = CalculateNetTotal(order);
decimal orderTotal = CalculateOrderTotal(netTotal, applicableTaxes);
OrderSummary orderSummary= new OrderSummary
{
OrderNumber = orderConfirmation.OrderNumber,
OrderId = orderConfirmation.OrderId,
CustomerId = orderConfirmation.CustomerId,
Taxes = applicableTaxes,
NetTotal = netTotal,
Total = orderTotal,
};
_emailService.SendOrderConfirmationEmail(orderSummary.CustomerId, orderSummary.OrderId);
return orderSummary;
}
else
throw new Exception(_reasonsForInvalidOrder);
}
public OrderSummary PlaceOrder(Order order)
{
ValidateOrder(order);
var fulfillment = _orderFulfillmentService.Fulfill(order);
var customer = _customerRepository.Get(order.CustomerId);
var netTotal = CalculateNetTotal(order);
var listOfTaxEntries = CreateListOfTaxEntries(customer);
var orderTotal = CalculateOrderTotal(listOfTaxEntries, netTotal);
var orderSummary = new OrderSummary()
{
OrderNumber = fulfillment.OrderNumber,
OrderId = fulfillment.OrderId,
Taxes = listOfTaxEntries,
NetTotal = netTotal,
Total = orderTotal
};
SendConfirmationEmail(order, orderSummary);
return orderSummary;
}
private decimal CalculateNetTotal(Order order)
{
decimal netTotal = 0;
foreach (var orderItem in order.OrderItems)
{
netTotal += orderItem.Product.Price*orderItem.Quantity;
}
return netTotal;
}
public void PlaceOrder_AllProductsNotInStock_DoesThrowException()
{
// Arrange
_productRepository.Expect(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(false);
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
OrderItems = new List<OrderItem>
{
new OrderItem { Product = new Product { Sku = "apple" } },
new OrderItem { Product = new Product { Sku = "apple2" } }
}
};
// Act // Assert
var exception = Assert.Throws<Exception>(() => orderService.PlaceOrder(order));
Assert.That(exception.Message, Is.StringContaining("Not all products are in stock."));
}
public void OrderIsNotValidIdAnyProductsAreOutOfStock()
{
// Arrange
var beerOrder = new Order();
beerOrder.OrderItems.Add(new OrderItem
{
Product = new Product(_productRepo) { Sku = "1234" },
Quantity = 2
});
beerOrder.OrderItems.Add(new OrderItem
{
Product = new Product(_productRepo) { Sku = "2345" },
Quantity = 5
});
// Act
var orderValid = beerOrder.OrderItemsAreUnique();
// Assert
Assert.That(orderValid, Is.True);
}
public void OrderIsNotValidIfOrdersAreNotUniqueByProductSku()
{
// Arrange
var beerOrder = new Order();
beerOrder.OrderItems.Add(new OrderItem
{
Product = new Product(_productRepo) { Sku = "1234"},
Quantity = 2
});
beerOrder.OrderItems.Add(new OrderItem
{
Product = new Product(_productRepo) { Sku = "1234"},
Quantity = 5
});
// Act
var orderValid = beerOrder.OrderItemsAreUnique();
// Assert
Assert.That(orderValid, Is.False);
}
public void PlaceOrder_CustomerIsInCustomerRepository_DoesNotThrowException()
{
// Arrange
var expectedCustomerId = 1;
_productRepository.Stub(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(true);
_orderFulfillmentService.Stub(or => or.Fulfill(Arg<Order>.Is.Anything)).Return(new OrderConfirmation());
_taxRateService.Stub(t => t.GetTaxEntries(Arg<String>.Is.Anything, Arg<String>.Is.Anything)).Return(new List<TaxEntry> { new TaxEntry() });
_customerRepository.Expect(c => c.Get(expectedCustomerId)).Return(new Customer {CustomerId = expectedCustomerId});
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
CustomerId = 1,
OrderItems = new List<OrderItem>
{
new OrderItem
{
Product = new Product { Sku = "apple", Price = (decimal) 2.00},
Quantity = 2
},
new OrderItem
{
Product = new Product { Sku = "apple2", Price = (decimal) 2.50 },
Quantity = 1
}
}
};
// Act
var result = orderService.PlaceOrder(order);
// Assert
_customerRepository.VerifyAllExpectations();
}
public void PlaceOrder_OrderIsValid_OrderSummaryContainsApplicableTaxes()
{
// Arrange
var expectedCustomerId = 1;
var customer = new Customer{ CustomerId = expectedCustomerId};
_customerRepository.Stub(c => c.Get(Arg<int>.Is.Anything)).Return(customer);
_productRepository.Stub(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(true);
_orderFulfillmentService.Stub(or => _orderFulfillmentService.Fulfill(Arg<Order>.Is.Anything))
.Return(new OrderConfirmation());
_taxRateService.Stub(t => t.GetTaxEntries(customer.PostalCode, customer.Country))
.Return(new List<TaxEntry> {new TaxEntry {Description = "USA"} });
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
CustomerId = expectedCustomerId,
OrderItems = new List<OrderItem>
{
new OrderItem { Product = new Product { Sku = "apple" } },
new OrderItem { Product = new Product { Sku = "apple2" } }
}
};
// Act
var result = orderService.PlaceOrder(order);
// Assert
Assert.That(result.Taxes.ToList().Exists(tax => tax.Description == "USA"));
}
public void PlaceOrder_OrderIsValid_OrderSummaryContainsNetTotal()
{
// Arrange
_customerRepository.Stub(c => c.Get(Arg<int>.Is.Anything)).Return(new Customer());
_orderFulfillmentService.Stub(or => or.Fulfill(Arg<Order>.Is.Anything)).Return(new OrderConfirmation());
_productRepository.Stub(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(true);
_taxRateService.Stub(t => t.GetTaxEntries(Arg<String>.Is.Anything, Arg<String>.Is.Anything)).Return(new List<TaxEntry> { new TaxEntry() });
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
CustomerId = 1,
OrderItems = new List<OrderItem>
{
new OrderItem
{
Product = new Product { Sku = "apple", Price = (decimal) 2.00},
Quantity = 2
},
new OrderItem
{
Product = new Product { Sku = "apple2", Price = (decimal) 2.50 },
Quantity = 1
}
}
};
// Act
var result = orderService.PlaceOrder(order);
// Assert
Assert.AreEqual(6.50, result.NetTotal);
}
private bool OrderIsValid(Order order, List<OrderItem> orderItems)
{
if (!orderItemsAreUnique(orderItems))
_reasonsForInvalidOrder += "The orderItems are not unique by Sku. \n";
if (!ItemsAreInStock(orderItems))
_reasonsForInvalidOrder += "Not all products are in stock. \n";
if (!IsCustomerValid(order.CustomerId))
_reasonsForInvalidOrder += "The customer is null or cannot be retrieved.";
return _reasonsForInvalidOrder.Length == 0;
}
public virtual void ValidateOrder(Order order)
{
var reasons = new List<string>();
if (order == null)
{
reasons.Add("Order is null");
throw new InvalidOrderException(reasons);
}
if (!order.OrderItemsAreUnique())
{
reasons.Add("Order skus are not unique");
if (!order.AllProductsAreInStock())
{
reasons.Add("Some products are not in stock");
}
throw new InvalidOrderException(reasons);
}
if (!order.AllProductsAreInStock())
{
reasons.Add("Some products are not in stock");
throw new InvalidOrderException(reasons);
}
}
private void SendConfirmationEmail(Order order, OrderSummary orderSummary)
{
_emailService.SendOrderConfirmationEmail(order.CustomerId, orderSummary.OrderId);
}
public void PlaceOrder_OrderIsValid_OrderSummaryContainsOrderId()
{
// Arrange
var expectedOrderId = 1;
_customerRepository.Stub(c => c.Get(Arg<int>.Is.Anything)).Return(new Customer());
_productRepository.Stub(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(true);
_taxRateService.Stub(t => t.GetTaxEntries(Arg<String>.Is.Anything, Arg<String>.Is.Anything)).Return(new List<TaxEntry> { new TaxEntry() });
var order = new Order
{
CustomerId = 1,
OrderItems = new List<OrderItem>
{
new OrderItem { Product = new Product { Sku = "apple" } },
new OrderItem { Product = new Product { Sku = "apple2" } },
}
};
_orderFulfillmentService.Stub(or => or.Fulfill(order)).Return(new OrderConfirmation{OrderNumber = "1", OrderId = 1, });
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
// Act
var result = orderService.PlaceOrder(order);
// Assert
Assert.That(result.OrderId, Is.EqualTo(expectedOrderId), "OrderId");
}
private Order GetOrderFrom(params Product[] products)
{
var order = new Order();
foreach (var product in products)
{
var orderItem = new OrderItem { Product = product, Quantity = 17 };
order.OrderItems.Add(orderItem);
}
order.CustomerId = _bestCustomer.CustomerId.Value;
return order;
}
public void PlaceOrder_OrderIsNotValid_ThrowsExceptionWithListOfWhyNotValid()
{
// Arrange
_productRepository.Expect(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(false);
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
OrderItems = new List<OrderItem>
{
new OrderItem { Product = new Product { Sku = "apple" } },
new OrderItem { Product = new Product { Sku = "apple2" } }
}
};
// Act // Assert
Assert.Throws<Exception>(() => orderService.PlaceOrder(order));
}
public void PlaceOrder__NotUniqueByProductSKU__DoesThrowException()
{
// Arrange
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
OrderItems = new List<OrderItem>
{
new OrderItem { Product = new Product {Sku = "apple"} },
new OrderItem { Product = new Product {Sku = "apple"} },
}
};
// Act // Assert
var exception = Assert.Throws<Exception>(() => orderService.PlaceOrder(order));
Assert.That(exception.Message, Is.StringContaining("The orderItems are not unique by Sku."));
}
public void PlaceOrder_TaxesNotInTaxRateService_TaxesIsEmpty()
{
// Arrange
var customerId = 1;
_productRepository.Stub(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(true);
_orderFulfillmentService.Stub(or => or.Fulfill(Arg<Order>.Is.Anything)).Return(new OrderConfirmation());
_customerRepository.Stub(c => c.Get(customerId)).Return(new Customer {CustomerId = customerId});
_taxRateService.Expect(t => t.GetTaxEntries(Arg<String>.Is.Anything, Arg<String>.Is.Anything))
.Return(new List<TaxEntry>());
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
CustomerId = customerId,
OrderItems = new List<OrderItem>
{
new OrderItem
{
Product = new Product { Sku = "apple", Price = (decimal) 2.00},
Quantity = 2
},
new OrderItem
{
Product = new Product { Sku = "apple2", Price = (decimal) 2.50 },
Quantity = 1
}
}
};
// Act
var result = orderService.PlaceOrder(order);
// Assert
Assert.That(result.Taxes, Is.Empty);
}
public void PlaceOrder_OrderIsValid_ReturnOrderSummary()
{
// Arrange
_customerRepository.Stub(c => c.Get(Arg<int>.Is.Anything)).Return(new Customer());
_productRepository.Stub(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(true);
_orderFulfillmentService.Stub(or => _orderFulfillmentService.Fulfill(Arg<Order>.Is.Anything)).Return(new OrderConfirmation());
_taxRateService.Stub(t => t.GetTaxEntries(Arg<String>.Is.Anything, Arg<String>.Is.Anything)).Return(new List<TaxEntry> { new TaxEntry() });
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
CustomerId = 1,
OrderItems = new List<OrderItem>
{
new OrderItem { Product = new Product { Sku = "apple" } },
new OrderItem { Product = new Product { Sku = "apple2" } }
}
};
// Act // Assert
var actual = orderService.PlaceOrder(order);
Assert.IsInstanceOf<OrderSummary>(actual);
}
public void PlaceOrder_OrderIsValid_OrderSummaryContainsOrderTotal()
{
// Arrange
var customer = new Customer { CustomerId = 1 };
var taxRate1 = 1.5;
var taxRate2 = 2.5;
var netTotal = 6.50;
_customerRepository.Stub(c => c.Get(Arg<int>.Is.Anything)).Return(customer);
_orderFulfillmentService.Stub(or => or.Fulfill(Arg<Order>.Is.Anything)).Return(new OrderConfirmation());
_productRepository.Stub(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(true);
_taxRateService.Stub(t => t.GetTaxEntries(customer.PostalCode, customer.Country))
.Return(new List<TaxEntry>
{
new TaxEntry {Rate = (decimal) taxRate1},
new TaxEntry {Rate = (decimal) taxRate2},
});
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
CustomerId = 1,
OrderItems = new List<OrderItem>
{
new OrderItem
{
Product = new Product { Sku = "apple", Price = (decimal) 2.00},
Quantity = 2
},
new OrderItem
{
Product = new Product { Sku = "apple2", Price = (decimal) 2.50 },
Quantity = 1
}
}
};
var expectedOrderTotal = netTotal * taxRate1 + netTotal * taxRate2;
// Act
var result = orderService.PlaceOrder(order);
// Assert
Assert.AreEqual(expectedOrderTotal, result.Total);
}
public OrderSummary PlaceOrder(Order order)
{
return null;
}
public void PlaceOrder_CustomerNotInCustomerRepository_DoesThrowException()
{
// Arrange
_customerRepository.Stub(c => c.Get(Arg<int>.Is.Anything)).Return(null);
_productRepository.Stub(pr => pr.IsInStock(Arg<string>.Is.Anything)).Return(true);
var orderService = new OrderService(_productRepository, _orderFulfillmentService, _emailService, _customerRepository, _taxRateService);
var order = new Order
{
CustomerId = 1,
OrderItems = new List<OrderItem>
{
new OrderItem
{
Product = new Product { Sku = "apple", Price = (decimal) 2.00},
Quantity = 2
},
new OrderItem
{
Product = new Product { Sku = "apple2", Price = (decimal) 2.50 },
Quantity = 1
}
}
};
// Act // Assert
var exception = Assert.Throws<Exception>(() => orderService.PlaceOrder(order));
Assert.That(exception.Message, Is.StringContaining("The customer is null or cannot be retrieved."));
}
