Give_no_discount_when_book_is_not_eligible_for_a_discount()
{
var aBookWithNoDiscount = BookBuilder.ACookingBook().Costing(10.00).Build();
var basket = BasketBuilder.ABasket().With(aBookWithNoDiscount).Build();
Check.That(basket.PriceWithDiscount()).IsEqualTo(10.0);
Check.That(basket.FullPrice()).IsEqualTo(10.0);
}
Give_10_percent_discount_for_IT_books_when_containing_one_of_them()
{
var basket = BasketBuilder.ABasket()
.With(
BookBuilder.AnITBook().Costing(10.0).Build())
.Build();
Check.That(basket.PriceWithDiscount()).IsEqualTo(9.0);
}
Give_30_percent_discount_for_IT_books_when_containing_multiple_books()
{
var basket = BasketBuilder.ABasket()
.With(
BookBuilder.AnITBook().Costing(30.0).Build(),
BookBuilder.AnITBook().Costing(10.0).Build(),
BookBuilder.AnITBook().Costing(20.0).Build())
.Build();
Check.That(basket.PriceWithDiscount()).IsEqualTo(42.0);
}
Not_give_discount_for_Travel_books_when_containing_less_than_four_of_them()
{
var basket = BasketBuilder.ABasket()
.With(
BookBuilder.ATravelBook().Costing(30.0).Build(),
BookBuilder.ATravelBook().Costing(10.0).Build(),
BookBuilder.ATravelBook().Costing(20.0).Build())
.Build();
Check.That(basket.FullPrice()).IsEqualTo(60.0);
}
Give_40_percent_discount_for_Travel_books_when_containing_more_than_three_of_them()
{
var basket = BasketBuilder.ABasket()
.With(
BookBuilder.ATravelBook().Costing(30.0).Build(),
BookBuilder.ATravelBook().Costing(10.0).Build(),
BookBuilder.ATravelBook().Costing(20.0).Build(),
BookBuilder.ATravelBook().Costing(10.0).Build())
.Build();
Check.That(basket.PriceWithDiscount()).IsEqualTo(42.0);
}
Calculate_the_total_price_with_no_discount_when_containing_multiple_books()
{
var basket = BasketBuilder.ABasket()
.With(
BookBuilder.ACookingBook().Costing(10.0).Build(),
BookBuilder.AnITBook().Costing(30.0).Build(),
BookBuilder.AnITBook().Costing(20.0).Build(),
BookBuilder.ATravelBook().Costing(20.0).Build())
.Build();
Check.That(basket.FullPrice()).IsEqualTo(80.0);
}
Combine_10_percent_discount_for_1_IT_book_and_40_percent_discount_for_4_Travel_books()
{
var basket = BasketBuilder.ABasket()
.With(
BookBuilder.AnITBook().Costing(10.0).Build(),
BookBuilder.ATravelBook().Costing(30.0).Build(),
BookBuilder.ATravelBook().Costing(10.0).Build(),
BookBuilder.ATravelBook().Costing(20.0).Build(),
BookBuilder.ATravelBook().Costing(10.0).Build())
.Build();
Check.That(basket.PriceWithDiscount()).IsEqualTo(51.0);
}
Return_an_unmodifiable_list_of_books()
{
BasketBuilder.ABasket().Build().Books().Add(BookBuilder.ACookingBook().Build());
}