public void Test_CalculateFinalBasketPrice_RegistersCorrectDiscountAndReturnsCorrectTotalPrice_When7BooksInBasket()
{
//arrange
Checkout checkout = new Checkout();
Basket basket = new Basket();
Book book1 = new Book("", "", "", (decimal)10.00, 70);
Book book2 = new Book("", "", "", (decimal)20.00, 200);
Book book3 = new Book("", "", "", (decimal)30.00, 100);
Book book4 = new Book("", "", "", (decimal)40.00, 70);
Book book5 = new Book("", "", "", (decimal)50.00, 200);
Book book6 = new Book("", "", "", (decimal)60.00, 200);
Book book7 = new Book("", "", "", (decimal)70.00, 100);
basket.AddBook(book1);
basket.AddBook(book2);
basket.AddBook(book3);
basket.AddBook(book4);
basket.AddBook(book5);
basket.AddBook(book6);
basket.AddBook(book7);
//act
decimal actualValue = checkout.CalculateFinalBasketPrice(basket.FindAllBooks());
//assert
decimal sumOfPrices = (decimal)(10.00 + 20.00 + 30.00 + 40.00 + 50.00 + 60.00 + 70.00);
Assert.That(actualValue, Is.EqualTo(sumOfPrices - (2 / 100) * sumOfPrices));
}
public void Test_CalculateFinalBasketPrice_Returns0_WhenNoBooksInBasket()
{
//arrange
Checkout checkout = new Checkout();
Basket basket = new Basket();
//act
decimal actualValue = checkout.CalculateFinalBasketPrice(basket.FindAllBooks());
//assert
Assert.That(actualValue, Is.EqualTo(0));
}
public void Test_CalculateFinalBasketPrice_ReturnsBookPrice_When1BookInBasket()
{
//arrange
Checkout checkout = new Checkout();
Basket basket = new Basket();
basket.AddBook(new Book("", "", "", (decimal)20.25, 60));
//act
decimal actualValue = checkout.CalculateFinalBasketPrice(basket.FindAllBooks());
//assert
Assert.That(actualValue, Is.EqualTo(20.25));
}
public void Test_CalculateFinalBasketPrice_ReturnsSumOfBookPrices_When2BooksInBasket()
{
//arrange
Checkout checkout = new Checkout();
Basket basket = new Basket();
Book book1 = new Book("", "", "", (decimal)10.00, 70);
Book book2 = new Book("", "", "", (decimal)25.00, 200);
basket.AddBook(book1);
basket.AddBook(book2);
//act
decimal actualValue = checkout.CalculateFinalBasketPrice(basket.FindAllBooks());
//assert
Assert.That(actualValue, Is.EqualTo(10.00 + 25.00));
}
