public void T011_BusinessHasSubstractions()
{
// Given
int companyMoney = 23000;
List <Goods> goods = new List <Goods>()
{
new Goods(1000, "keyboard"), new Goods(2000, "mouse")
};
// Expected
// Right. So, 23000 - 3000 from 'costs of generating the profits' = 20000
// Thus, total tax = 0.19 * 20000 = 3800
int expectedTax = 3800;
// Yes, you will have to deal with a new method. You will have to pass appropriate parameters
// to the calculator using the CONSTRUCTOR, because you have no other way of
// passing without changing the interface of the method - the contract.
ITaxCalculator calculator = TaxCalculatorFactory.Create(CustomerType.BusinessLinear, goods);
// When
int actualTax = calculator.CalculateTax(companyMoney);
// Then
Assert.AreEqual(expectedTax, actualTax);
}
public void T009_CalculateTotalPersonalTax()
{
// Given
int receivedMoney = 100000;
// int taxCredit = 8000; kwota wolna od podatku
// int taxLevel = 85528; zmiana progu podatkowego
// Once again, you may add a TotalPersonalTaxCalculator class and
// swap old PersonalTax with this new one in the factory.
// You may note for previous tests it will work like first level tax, but it will let you
// CHAIN two calculators. Look at Expected and split money appropriately.
// If you don't know what I want from you, call me when you get here.
ITaxCalculator calculator = TaxCalculatorFactory.Create(CustomerType.Personal);
// Expected
// Money up to 85528: calculated like T002, so: 13955.04. But we have int, so 13955.
// Money above 85528: 32%. In this case, 4631.04. But we have int, so 4631.
// TOTAL: 18586
int expectedTax = 4631;
// When
int actualTax = calculator.CalculateTax(receivedMoney);
// Then
Assert.AreEqual(expectedTax, actualTax);
}
public void T004_SelectTaxCalculatorAsBusinessLinear()
{
// When
ITaxCalculator calculator = TaxCalculatorFactory.Create("linear business");
// Then
Assert.IsTrue(calculator is LinearTaxCalculator);
}
public void T003_SelectTaxCalculatorAsPersonal()
{
// When
ITaxCalculator calculator = TaxCalculatorFactory.Create("personal first tax level");
// Then
Assert.IsTrue(calculator is PersonalTaxCalculator);
}
public void T005_CustomerAsksForPersonalTax()
{
// Here, you will have to build a second method of a Factory
// Given
Customer customer = new Customer(20000, CustomerType.Personal);
ITaxCalculator calculator = TaxCalculatorFactory.Create(customer.Type);
// When
int owed = calculator.CalculateTax(customer.Money);
// Then
Assert.AreEqual(2160, owed);
}
public void T008_CalculatePersonalTaxAbove85528()
{
// Given
int receivedMoney = 100000;
// Note: you have to build a NEW ITaxCalculator member - add a new class
ITaxCalculator calculator = TaxCalculatorFactory.Create("personal second tax level");
// Expected
// Money above 85528: 32%, as this is the second tax level. Forget about tax credit this time.
// TOTAL: 32000
int expectedTax = 32000;
// When
int actualTax = calculator.CalculateTax(receivedMoney);
// Then
Assert.AreEqual(expectedTax, actualTax);
}
public void T012_BusinessHasAmortyzacja()
{
// Given
int companyMoney = 20000;
List <Goods> goods = new List <Goods>()
{
new Goods(10001, "laptop")
};
int expectedTax = 3325;
ITaxCalculator calculator = TaxCalculatorFactory.Create(CustomerType.BusinessLinear, goods);
// When
int actualTax = calculator.CalculateTax(companyMoney);
// Then
Assert.AreEqual(expectedTax, actualTax);
}