public void BuyProductTests()
{
List <Inventory> products = new List <Inventory>();
Inventory item = new Inventory();
Inventory cola = new Inventory("cola", 1.00);
Inventory chips = new Inventory("chips", 0.50);
products = item.LoadInventory(cola, 5);
products = item.LoadInventory(chips, 3, products);
Display dis = new Display();
Coins coin = new Coins(5.670, 1.75);
dis.AddChange(dis, coin);
dis.AddChange(dis, coin);
dis.AddChange(dis, coin);
dis.AddChange(dis, coin);
string name = products.Where(i => i.Name == "chips").First().Name;
Assert.True(dis.CanBuyProduct(dis, chips, false));
products = item.BuyProduct(name, products, dis);
Assert.Equal(0.50, dis.ChangeReturned);
Assert.Equal(2, item.GetInventoryCount(chips, products));
Assert.False(dis.CanBuyProduct(dis, chips, false));
}
public void ReturnChangeTests()
{
Display dis = new Display();
Coins coin = new Coins(5.670, 1.75);
Assert.Equal(0.25, dis.AddChange(dis, coin).ChangeInserted);
dis.AddChange(dis, coin);
dis.AddChange(dis, coin);
dis.AddChange(dis, coin);
dis = dis.ReturnChange(dis);
Assert.Equal(1, dis.ChangeReturned);
Assert.Equal(0, dis.ChangeInserted);
}