public void TestEdgeCases()
{
Assert.AreEqual(2 * (8 * 4 * 0.8), PotterBooks.PriceAllBooks(new List <int> {
1, 1, 2, 2, 3, 3, 4, 5
}));
Assert.AreEqual(3 * (8 * 5 * 0.75) + 2 * (8 * 4 * 0.8),
PotterBooks.PriceAllBooks(new List <int> {
1, 1, 1, 1, 1,
2, 2, 2, 2, 2,
3, 3, 3, 3,
4, 4, 4, 4, 4,
5, 5, 5, 5
}));
}
public void TestSimpleDiscounts()
{
Assert.AreEqual(8 * 2 * 0.95, PotterBooks.PriceAllBooks(new List <int> {
1, 2
}));
Assert.AreEqual(8 * 3 * 0.9, PotterBooks.PriceAllBooks(new List <int> {
1, 3, 5
}));
Assert.AreEqual(8 * 4 * 0.8, PotterBooks.PriceAllBooks(new List <int> {
1, 2, 3, 5
}));
Assert.AreEqual(8 * 5 * 0.75, PotterBooks.PriceAllBooks(new List <int> {
1, 2, 3, 4, 5
}));
}
public void TestSeveralDiscounts()
{
Assert.AreEqual(8 + (8 * 2 * 0.95), PotterBooks.PriceAllBooks(new List <int> {
1, 1, 2
}));
Assert.AreEqual(2 * (8 * 2 * 0.95), PotterBooks.PriceAllBooks(new List <int> {
1, 1, 2, 2
}));
Assert.AreEqual((8 * 4 * 0.8) + (8 * 2 * 0.95), PotterBooks.PriceAllBooks(new List <int> {
1, 1, 2, 3, 3, 4
}));
Assert.AreEqual(8 + (8 * 5 * 0.75), PotterBooks.PriceAllBooks(new List <int> {
1, 2, 2, 3, 4, 5
}));
}
public void TestBasics()
{
Assert.AreEqual(0, PotterBooks.PriceAllBooks(new List <int>()));
Assert.AreEqual(8, PotterBooks.PriceAllBooks(new List <int> {
1
}));
Assert.AreEqual(8, PotterBooks.PriceAllBooks(new List <int> {
2
}));
Assert.AreEqual(8, PotterBooks.PriceAllBooks(new List <int> {
3
}));
Assert.AreEqual(8, PotterBooks.PriceAllBooks(new List <int> {
4
}));
Assert.AreEqual(8, PotterBooks.PriceAllBooks(new List <int> {
5
}));
Assert.AreEqual(24, PotterBooks.PriceAllBooks(new List <int> {
1, 1, 1
}));
}