public void Given_an_empty_rating_list_when_calculating_average_rating_then_0_is_returned()
{
// Arrange
var emptyPageRatingList = new List<PageRating>();
var ratingCalculator = new RatingCalculator();
// Act
var averageRating = ratingCalculator.CalculateAverageRating(emptyPageRatingList);
// Assert
Assert.That(averageRating, Is.EqualTo(0));
}
public void Given_a_list_with_multiple_ratings_when_calculating_average_rating_then_the_average_rating_is_returned()
{
// Arrange
const int rating1 = 1;
const int rating2 = 2;
const double expectedAverageRating = 1.5;
var pageRatingList = new List<PageRating>();
pageRatingList.Add(new PageRating { Rating = rating1 });
pageRatingList.Add(new PageRating { Rating = rating2 });
var ratingCalculator = new RatingCalculator();
// Act
var averageRating = ratingCalculator.CalculateAverageRating(pageRatingList);
// Assert
Assert.That(averageRating, Is.EqualTo(expectedAverageRating));
}