public void AddNewProductTest(string name, double price, int expectedCount)
{
var svc = new CartController();
CartController.Products = MockProduct;
svc.AddNewProduct(new Product {
Name = name, Price = price
});
var result = svc.GetProducts().Value.ToList();
Assert.Equal(result.Count, expectedCount);
var haveInsertItem = result.Any(it => it.Name == name && it.Price == price);
Assert.True(haveInsertItem);
}