public void CanGetExistingProductByProductCode()
        {
            IProductRepository repository = new ProductRepository();
            var fromDb = repository.GetByProductCode(_products[1].ProductCode);

            Assert.IsNotNull(fromDb);
            Assert.AreNotSame(_products[1], fromDb);
            Assert.AreEqual(_products[1].ProductId, fromDb.ProductId);
        }