public void GivesRightPriceForTwoDifferentBooks()
{
var books = new[] { HPLibrary.GetBookById(1), HPLibrary.GetBookById(2) };
var price = new PriceCalculator().Calculate(books.ToList());
Assert.That(price, Is.EqualTo(15.2m));
}
public void OneBookCostsEightEuro()
{
var books = new[]
{
HPLibrary.GetBookById(1),
};
var price = new PriceCalculator().Calculate(books.ToList());
Assert.That(price, Is.EqualTo(8));
}
public void GivesRightPriceForTwoCopiesOfFirstBookAndOneOfTheSecond()
{
var books = new[]
{
HPLibrary.GetBookById(1), HPLibrary.GetBookById(1),
HPLibrary.GetBookById(2)
};
var price = new PriceCalculator().Calculate(books.ToList());
Assert.That(price, Is.EqualTo(23.2m));
}
public void GivesTheRightPriceForMultipleSets()
{
var books = new[]
{
HPLibrary.GetBookById(1),
HPLibrary.GetBookById(1),
HPLibrary.GetBookById(2),
HPLibrary.GetBookById(2),
HPLibrary.GetBookById(3),
HPLibrary.GetBookById(3),
HPLibrary.GetBookById(4),
HPLibrary.GetBookById(5)
};
var price = new PriceCalculator().Calculate(books.ToList());
Assert.That(price, Is.EqualTo(51.6));
}
public void EveryIndividualBookCostsEightEuro()
{
var books = HPLibrary.GetAllBooks().ToList();
Assert.That(books.Select(book => book.Price), Is.All.EqualTo(8m));
}
