public void Post_Creates_New_Watchlist()
{
// arrange
var newWatchlist = new Watchlist(1, "test review", "test rating");
var watchlistList = new List <Watchlist>();
// Use When..Do to substitute for methods that don't return a value, like the Repository method Create()
// When() allows us to call the method on the substitute and pass an argument
// Do() allows us to pass a callback function that executes when the method is called
watchlistMockRepo.When(t => t.Create(newWatchlist))
.Do(t => watchlistList.Add(newWatchlist));
watchlistMockRepo.GetAll().Returns(watchlistList);
// act
var result = testController.Post(newWatchlist);
// assert
Assert.Contains(newWatchlist, result);
}
