public IEnumerable <Product> GetProducts(string sortOption)
{
SortOption sortBy;
if (string.IsNullOrWhiteSpace(sortOption))
{
throw new ArgumentNullException(nameof(sortOption));
}
if (!Enum.TryParse(sortOption, true, out sortBy))
{
throw new ArgumentException(nameof(sortOption));
}
var products = _productServiceAgent.GetProducts();
var store = new WooliesStore();
store.Load(products);
return(store.SortBy(SimpleSortFactory.Create(sortBy)));
}
public void GivenSortOptionIsNullThrowsException()
{
// act & assert
Assert.Throws <ArgumentNullException>(() => _sut.SortBy(null));
}