public void Cost_2Books(int book1, int book2)
{
var set = new BookSet();
set.Add(book1);
set.Add(book2);
Assert.AreEqual(8 * 2 * 0.95, set.Cost());
}
public void Cost_3Books(int book1, int book2, int book3)
{
var set = new BookSet();
set.Add(book1);
set.Add(book2);
set.Add(book3);
Assert.AreEqual(8 * 3 * 0.90, set.Cost());
}
public void Cost_4Books(int book1, int book2, int book3, int book4)
{
var set = new BookSet();
set.Add(book1);
set.Add(book2);
set.Add(book3);
set.Add(book4);
Assert.AreEqual(8 * 4 * 0.80, set.Cost());
}
public void Cost_Empty()
{
var set = new BookSet();
Assert.AreEqual(0, set.Cost());
}
public void Cost_4Books()
{
var set = new BookSet();
set.Add(1);
set.Add(2);
set.Add(3);
set.Add(4);
set.Add(5);
Assert.AreEqual(8 * 5 * 0.75, set.Cost());
}
public void Cost_1Book(int book)
{
var set = new BookSet();
set.Add(book);
Assert.AreEqual(8, set.Cost());
}