public void The_MovieRatedByCritics_event_should_be_unchanged_with_the_same_rating()
{
var movieId = Guid.NewGuid();
var ratedByCritics = new MovieRatedByCritics(movieId, 60);
var repo = new DummyMovieProjectionRepository();
repo.List[movieId] = new MovieProjection {
Id = movieId, CriticsScore = 60
};
var handler = new MovieProjectionHandlers(repo);
handler.Handle(ratedByCritics);
repo.List.Count.Should().Be(1);
repo.List.Values.ShouldBeEquivalentTo(new[]
{
new MovieProjection
{
Id = movieId,
CriticsScore = 60
}
});
}
public void The_MovieRatedByCritics_event_should_keep_a_roling_average()
{
var movieId = Guid.NewGuid();
var ratedByCritics = new MovieRatedByCritics(movieId, 60);
var repo = new DummyMovieProjectionRepository();
repo.List[movieId] = new MovieProjection {
Id = movieId, CriticsScore = 50
};
var handler = new MovieProjectionHandlers(repo);
handler.Handle(ratedByCritics);
repo.List.Count.Should().Be(1);
repo.List.Values.ShouldBeEquivalentTo(new[]
{
new MovieProjection
{
Id = movieId,
CriticsScore = 51
}
});
}
public void Handle(MovieRatedByCritics movieRated)
{
UpdateMovie(movieRated.MovieId,
m =>
{
if (m.CriticsScore.HasValue)
{
m.CriticsScore = (int)Math.Round(0.9 * m.CriticsScore.Value + 0.1 * movieRated.Rating, 0);
}
else
{
m.CriticsScore = movieRated.Rating;
}
});
}