public void Should_Apply_Line_Fixed_Discount(
IList <Line> lines,
decimal fixedDiscount,
string currency,
decimal taxRate)
{
var discountCalculator = Substitute.For <IDiscountCalculator <LineViewModel> >();
discountCalculator.GetDiscount(Arg.Any <LineViewModel>()).Returns(fixedDiscount);
var sut = new OrderViewModel(
Substitute.For <IDiscountCalculator <OrderViewModel> >(),
discountCalculator,
new Order(Arg.Any <string>(), currency, taxRate));
foreach (var line in lines)
{
sut.AddLine(line);
}
var subtotal = lines.Sum(line => line.Quantity * line.Bike.Price - fixedDiscount);
var tax = subtotal * taxRate;
var total = subtotal + tax;
Assert.That(sut.Lines.Count, Is.EqualTo(lines.Count));
Assert.That(sut.SubTotal, Is.EqualTo(subtotal));
Assert.That(sut.Tax, Is.EqualTo(tax));
Assert.That(sut.Total, Is.EqualTo(total));
}
public void Should_Update_Prices_When_Adding_DiscountCode()
{
var orderDiscount = Substitute.For <IDiscountCalculator <OrderViewModel> >();
orderDiscount.GetDiscount(Arg.Any <OrderViewModel>()).Returns(info =>
{
var orderVm = info.ArgAt <OrderViewModel>(0);
if (orderVm.DiscountCodes != null && orderVm.DiscountCodes.Contains("test"))
{
return(orderVm.SubTotal * 0.1m);
}
return(0);
});
var sut = new OrderViewModel(orderDiscount, Substitute.For <IDiscountCalculator <LineViewModel> >(),
new Order(Arg.Any <string>(), Arg.Any <string>(), 0.0725m));
sut.AddLine(new Line(new Bike("brand", "model", 1000m), 1));
Assert.That(sut.Lines.Count, Is.EqualTo(1));
Assert.That(sut.SubTotal, Is.EqualTo(1000m));
Assert.That(sut.Tax, Is.EqualTo(1000m * 0.0725m));
Assert.That(sut.Total, Is.EqualTo(1000m * 0.0725m + 1000m));
sut.AddDiscountCode("test");
Assert.That(sut.SubTotal, Is.EqualTo(1000m));
Assert.That(sut.Tax, Is.EqualTo(1000m * 0.0725m));
Assert.That(sut.Total, Is.EqualTo(1000m * 0.0725m + 900m));
}
static void Main(string[] args)
{
var orderDiscountCalculator = new DiscountStrategyCalculator <OrderViewModel>(DiscountStrategyOperations.Sum);
orderDiscountCalculator.Configure()
// Our good friends at contoso get a 20% fixed rebate
.When(order => order.Company == "Contoso")
.ApplyDiscount(order => order.SubTotal * 0.2m)
// 40% discount with FOO-BAR code
.When(order => order.DiscountCodes != null && order.DiscountCodes.Contains("FOO-BAR"))
.ApplyDiscount(order => order.SubTotal * 0.4m);
var lineDiscountCalculator = new DiscountStrategyCalculator <LineViewModel>(DiscountStrategyOperations.Max);
lineDiscountCalculator.Configure()
// 5% off Giant bikes
.When(line => line.Brand == "Giant")
.ApplyDiscount(line => line.SubTotal * 0.05m)
// 10% off order of 20 or more bikes with a unit price of at least $1000
.When(line => line.Quantity >= 20 && line.Price >= 1000m)
.ApplyDiscount(line => line.SubTotal * 0.1m)
// 20% off order of 10 or more bikes with a unit price of at least $2000
.When(line => line.Quantity >= 10 && line.Price >= 2000m)
.ApplyDiscount(line => line.SubTotal * 0.2m)
// 20% off order of 5 or more bikes with a unit price of at least $5000
.When(line => line.Quantity >= 5 && line.Price >= 5000m)
.ApplyDiscount(line => line.SubTotal * 0.2m);
var orderVm = new OrderViewModel(orderDiscountCalculator, lineDiscountCalculator, new Order("Contoso", "USD" /* GBP etc..., razor seems to have issues with EUR */, 0.0725m));
orderVm.AddLine(new Line(new Bike("Giant", "Defy 1", 1000), 10));
orderVm.AddLine(new Line(new Bike("Specialized", "Venge Elite", 2000), 7));
orderVm.AddLine(new Line(new Bike("Specialized", "S-Works Venge Dura-Ace", 5000), 5));
//orderVm.AddDiscountCode("FOO-BAR");
var receiptBuilder = new HtmlReceiptBuilder(File.ReadAllText("test.cshtml"), "test.cshtml");
File.WriteAllText("test.html", receiptBuilder.GenerateReceipt(orderVm));
}
public void Should_Throw_ArgumentNullException_When_Adding_Null_line()
{
var sut = new OrderViewModel(
Substitute.For <IDiscountCalculator <OrderViewModel> >(),
Substitute.For <IDiscountCalculator <LineViewModel> >(),
new Order(Arg.Any <string>(), Arg.Any <string>(), Arg.Any <decimal>()));
Assert.Throws <ArgumentNullException>(() => sut.AddLine(null));
}
public void HtmlReceiptOneElite()
{
var order = new OrderViewModel(Substitute.For <IDiscountCalculator <OrderViewModel> >(), Substitute.For <IDiscountCalculator <LineViewModel> >(), new Order("Anywhere Bike Shop", "USD", 0.0725m));
order.AddLine(new Line(Elite, 1));
var generator = HtmlReceiptBuilder.TestBuilder();
Assert.AreEqual(HtmlResultStatementOneElite, generator.GenerateReceipt(order));
}
public void Should_Not_Throw_ArgumentNullException_When_Line_DiscountCalculator_Is_Null()
{
var sut = new OrderViewModel(
Substitute.For <IDiscountCalculator <OrderViewModel> >(),
null,
new Order(Arg.Any <string>(), Arg.Any <string>(), Arg.Any <decimal>()));
sut.AddLine(new Line(new Bike(Arg.Any <string>(), Arg.Any <string>(), 1000m), 1));
Assert.That(sut.Lines.First().Discount, Is.EqualTo(0));
}
public string ReceiptOneDefy(int amount)
{
var lineDiscount = new DiscountStrategyCalculator <LineViewModel>();
lineDiscount.Configure()
.When(line => line.Quantity >= 20 && line.Price >= 1000)
.ApplyDiscount(line => line.Quantity * line.Price * 0.1m);
var orderVm = new OrderViewModel(Substitute.For <IDiscountCalculator <OrderViewModel> >(), lineDiscount, new Order("Anywhere Bike Shop", "USD", 0.0725m));
orderVm.AddLine(new Line(Defy, amount));
var generator = new StringReceiptBuilder();
return(generator.GenerateReceipt(orderVm));
}
public void Should_Update_Prices_When_Adding_Line()
{
var sut = new OrderViewModel(
Substitute.For <IDiscountCalculator <OrderViewModel> >(),
Substitute.For <IDiscountCalculator <LineViewModel> >(),
new Order(Arg.Any <string>(), Arg.Any <string>(), 0.0725m));
Assert.That(sut.Total, Is.EqualTo(0m));
Assert.That(sut.SubTotal, Is.EqualTo(0m));
Assert.That(sut.Tax, Is.EqualTo(0m));
sut.AddLine(new Line(new Bike("brand", "model", 1000m), 1));
Assert.That(sut.Lines.Count, Is.EqualTo(1));
Assert.That(sut.SubTotal, Is.EqualTo(1000m));
Assert.That(sut.Tax, Is.EqualTo(1000m * 0.0725m));
Assert.That(sut.Total, Is.EqualTo(1000m * 0.0725m + 1000m));
}