public void AllGetTotalMethod_HaveAllPromotionDiscountCase_ShouldCalculateCorrectly()
{
IExpensesCalculator expensesCalculator = GetExpensesCalculatorThatHaveAllDiscountPromotion();
double expectedTotalCost = 1450;
double expectedtotalDiscount = _snackCostForDiscountPromotionTest + (_furnitureCostForDiscountPromotionTest * 0.10) + (_medicineCostForDiscountPromotionTest * 0.15);
double expectedtotalPay = (expectedTotalCost - expectedtotalDiscount) + ((expectedTotalCost - expectedtotalDiscount) * TAX_RATE);
double actualTotalCost = expensesCalculator.GetTotalCost();
double actualTotalDiscount = expensesCalculator.GetTotalDiscount();
double actualTotalPay = expensesCalculator.GetTotalPay();
Assert.AreEqual(expectedTotalCost, actualTotalCost);
Assert.AreEqual(expectedtotalDiscount, actualTotalDiscount);
Assert.AreEqual(expectedtotalPay, actualTotalPay);
}
public void AllGetTotalMethod_HaveMedicineDiscountCase_ShouldCalculateCorrectly()
{
IExpensesCalculator expensesCalculator = GetExpensesCalculatorThatHaveDiscountFromMedicine();
double expectedTotalCost = 900;
double expectedtotalDiscount = _medicineCostForDiscountPromotionTest * 0.15;
double expectedtotalPay = (expectedTotalCost - expectedtotalDiscount) + ((expectedTotalCost - expectedtotalDiscount) * TAX_RATE);
double actualTotalCost = expensesCalculator.GetTotalCost();
double actualTotalDiscount = expensesCalculator.GetTotalDiscount();
double actualTotalPay = expensesCalculator.GetTotalPay();
Assert.AreEqual(expectedTotalCost, actualTotalCost);
Assert.AreEqual(expectedtotalDiscount, actualTotalDiscount);
Assert.AreEqual(expectedtotalPay, actualTotalPay);
}
public void AllGetTotalMethod_HaveNoDiscountCase_ShouldCalculateCorrectly()
{
IExpensesCalculator expensesCalculator = GetExpensesCalculatorThatHaveNothingDiscount();
double expectedTotalCost = 900;
double expectedtotalDiscount = 0;
double expectedtotalPay = (expectedTotalCost - expectedtotalDiscount) + ((expectedTotalCost - expectedtotalDiscount) * TAX_RATE);
double actualTotalCost = expensesCalculator.GetTotalCost();
double actualTotalDiscount = expensesCalculator.GetTotalDiscount();
double actualTotalPay = expensesCalculator.GetTotalPay();
Assert.AreEqual(expectedTotalCost, actualTotalCost);
Assert.AreEqual(expectedtotalDiscount, actualTotalDiscount);
Assert.AreEqual(expectedtotalPay, actualTotalPay);
}
public void AllGetTotalMethod_BagHaveNothingProduct_ShouldCalculateCorrectly()
{
IShoppingBag shoppingBag = GetShoppingBagHaveNothingProduct();
IEnumerable <IDiscountor> discountors = GetDiscountors(20, shoppingBag);
IExpensesCalculator expensesCalculator = GetExpensesCalculator(shoppingBag, discountors);
double expectedTotalCost = 0;
double expectedtotalDiscount = 0;
double expectedtotalPay = (expectedTotalCost - expectedtotalDiscount) * TAX_RATE;
double actualTotalCost = expensesCalculator.GetTotalCost();
double actualTotalDiscount = expensesCalculator.GetTotalDiscount();
double actualTotalPay = expensesCalculator.GetTotalPay();
Assert.AreEqual(expectedTotalCost, actualTotalCost);
Assert.AreEqual(expectedtotalDiscount, actualTotalDiscount);
Assert.AreEqual(expectedtotalPay, actualTotalPay);
}
public ExpensesCalculatorTests()
{
_calculator = new ExpensesCalculator();
}
public SplitBillsService(IFileReader reader, IFileWriter writer, IExpensesCalculator calculator)
{
_fileReader = reader;
_fileWriter = writer;
_calculator = calculator;
}
