/// <summary>
/// Default implementation for adding product.
/// Adds new product to the products collection
/// </summary>
/// <param name="product">Product to be added</param>
public virtual void AddProduct(Product product)
{
if (_products.Count < _productCapacity)
{
var backedProducts = _products;
try
{
/// since product list can be be updated in ANY TIME (according to task)
/// need to ensure it is only changed by one code in a time
/// This will help avoid ordering a product being changed or deleted
lock (_lockObject)
{
_products.Add(product);
}
}
catch (Exception ex)
{
// revert any changes to products before sending ex further
_products = backedProducts;
throw ex;
}
}
else
{
throw new IndexOutOfRangeException("Product capacity limited");
}
}
public void TakeOne_NotAvaliable_ExceptionThrown()
{
var info = new Product(Guid.NewGuid(), "Cookie", 10);
var amount = 0;
var instance = new ProductCollection(info, amount);
var taken = instance.TakeOne();
}
public void IsAvaliableProperty_ZeroAmount_FalseReturned()
{
var info = new Product(Guid.NewGuid(), "Cookie", 10);
var amount = 0;
var instance = new ProductCollection(info, amount);
Assert.IsFalse(instance.IsAvaliable);
}
public void Constructor_ValidArguments_InstanceCreated()
{
var info = new Product(Guid.NewGuid(), "Cookie", 10);
var amount = 10;
var instance = new ProductCollection(info, amount);
Assert.AreEqual(instance.ProductInfo, info);
Assert.AreEqual(instance.Amount, amount);
}
public void TakeOne_IsAvaliable_ProductReturned()
{
var info = new Product(Guid.NewGuid(), "Cookie", 10);
var amount = 10;
var instance = new ProductCollection(info, amount);
var taken = instance.TakeOne();
Assert.AreEqual(info.Barcode, taken.Barcode);
Assert.AreEqual(info.Name, taken.Name);
Assert.AreEqual(info.Price, taken.Price);
}
public void Constructor_ValidArguments_InstanceCreated()
{
Guid barcode = Guid.NewGuid();
string name = "Cookie";
int price = 10;
var instance = new Product(barcode, name, price);
Assert.AreEqual(instance.Barcode, barcode);
Assert.AreEqual(instance.Name, name);
Assert.AreEqual(instance.Price, price);
}
public void Clone_Cloned()
{
Guid barcode = Guid.NewGuid();
string name = "Cookie";
int price = 10;
var instance = new Product(barcode, name, price);
var cloned = instance.Clone();
Assert.AreEqual(instance.Barcode, cloned.Barcode);
Assert.AreEqual(instance.Name, cloned.Name);
Assert.AreEqual(instance.Price, cloned.Price);
}
public ProductCollection(Product info, int amount)
{
if (info == null)
{
throw new ArgumentNullException(nameof(info));
}
if (amount < 0)
{
throw new ArgumentException(nameof(amount));
}
ProductInfo = info;
Amount = amount;
}
public void Constructor_LessThanZeroAmount_ExceptionThrown()
{
var info = new Product(Guid.NewGuid(), "Cookie", 10);
new ProductCollection(info, -10);
}