public void Can_Clear_Contents()
{
// Arrange
Product p1 = new Product { ProductID = 1, Name = "P1", Price = 100M };
Product p2 = new Product { ProductID = 2, Name = "P2", Price = 50M };
Cart target = new Cart();
target.AddItem(p1, 1);
target.AddItem(p2, 1);
// Act
target.Clear();
// Assert
Assert.AreEqual(target.Lines.Count(), 0);
}
