public void ChangeStock_Changes_ProductStock()
{
var productsRepository = new ProductsRepository();
var added = productsRepository.Add(new Product
{
Name = "xUnit",
Description = "xUnit",
Price = 10m,
ImagePath = "/default.png",
Stock = 10
});
//change and test twice with different values to make sure the stock actually changed
productsRepository.ChangeStock(added.Id, 5);
var product = productsRepository.GetById(added.Id);
Assert.Equal(5, product.Stock);
productsRepository.ChangeStock(added.Id, 4);
product = productsRepository.GetById(added.Id);
Assert.Equal(4, product.Stock);
}