public void CartContoller_RemoveItem_Added()
{
Mock<IProductRepository> mock = new Mock<IProductRepository>();
mock.Setup(p => p.Products).Returns(new Product[] {
new Product {ProductName="P1", ProductID=1},
new Product {ProductName="P2", ProductID=2}
}.AsQueryable());
Cart cart = new Cart();
CartController controller = new CartController(mock.Object, null);
controller.AddItem(cart, 1, null);
controller.AddItem(cart, 2, null);
controller.RemoveItem(cart, 1, null);
Assert.IsTrue(cart.Lines.Count() == 1);
}