public void CalculatePrice_OneBook()
{
Book b = new Book { Title = "Book 1" };
PriceCalculator pc = new PriceCalculator();
var result = pc.CalculatePrice(new List<Book> { b }, pricePerBook);
Assert.AreEqual(pricePerBook,result);
}
public void CalculatePrice_ZeroBooks()
{
PriceCalculator pc = new PriceCalculator();
var result = pc.CalculatePrice(new List<Book> { }, pricePerBook);
Assert.AreEqual(0, result);
}
public void CalculatePrice_FiveDifferentBook()
{
List<Book> books = new List<Book>();
for (int i = 0; i < 5; i++)
books.Add(new Book { Title = "Book " + i.ToString() });
PriceCalculator pc = new PriceCalculator();
var result = pc.CalculatePrice(books, pricePerBook);
Assert.AreEqual(5 * pricePerBook * 0.75, result);
}
public void CalculatePrice_TwoSameBook()
{
List<Book> books = new List<Book>();
for (int i = 0; i < 2; i++)
books.Add(new Book { Title = "Book 1" });
PriceCalculator pc = new PriceCalculator();
var result = pc.CalculatePrice(books, pricePerBook);
Assert.AreEqual(2 * pricePerBook, result);
}
public void CalculatePrice_MixedBooks()
{
List<Book> books = new List<Book>();
books.Add(new Book { Title = "Book 1" });
books.Add(new Book { Title = "Book 1" });
books.Add(new Book { Title = "Book 2" });
books.Add(new Book { Title = "Book 2" });
books.Add(new Book { Title = "Book 3" });
books.Add(new Book { Title = "Book 3" });
books.Add(new Book { Title = "Book 4" });
books.Add(new Book { Title = "Book 5" });
PriceCalculator pc = new PriceCalculator();
var result = pc.CalculatePrice(books, pricePerBook);
Assert.AreEqual(51.60, result);
}