private IEnumerable <AdvisedPlaylist> SplitSongsToPlaylists(IReadOnlyCollection <SongModel> songs)
{
for (var i = 0; i + settings.OneAdviseSongsNumber <= songs.Count; i += settings.OneAdviseSongsNumber)
{
yield return(AdvisedPlaylist.ForHighlyRatedSongs(songs.Skip(i).Take(settings.OneAdviseSongsNumber)));
}
}
public async Task Advise_MixesDifferentAdviseTypesCorrectly()
{
// Arrange
var highlyRatedSongsAdvise1 = AdvisedPlaylist.ForHighlyRatedSongs(Enumerable.Empty <SongModel>());
var highlyRatedSongsAdvise2 = AdvisedPlaylist.ForHighlyRatedSongs(Enumerable.Empty <SongModel>());
var favoriteAdviseGroupAdvise1 = AdvisedPlaylist.ForAdviseSetFromFavoriteAdviseGroup(CreateTestAdviseSet(101));
var favoriteAdviseGroupAdvise2 = AdvisedPlaylist.ForAdviseSetFromFavoriteAdviseGroup(CreateTestAdviseSet(102));
var rankedBasedAdvises = Enumerable.Range(1, 10).Select(i => AdvisedPlaylist.ForAdviseSet(CreateTestAdviseSet(i))).ToList();
var rankBasedAdviserStub = new Mock <IPlaylistAdviser>();
rankBasedAdviserStub.Setup(x => x.Advise(It.IsAny <IEnumerable <AdviseGroupContent> >(), It.IsAny <PlaybacksInfo>(), It.IsAny <CancellationToken>())).ReturnsAsync(rankedBasedAdvises);
var highlyRatedSongsAdviserStub = new Mock <IPlaylistAdviser>();
highlyRatedSongsAdviserStub.Setup(x => x.Advise(It.IsAny <IEnumerable <AdviseGroupContent> >(), It.IsAny <PlaybacksInfo>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(new[] { highlyRatedSongsAdvise1, highlyRatedSongsAdvise2 });
var favoriteAdviseGroupsAdviserStub = new Mock <IPlaylistAdviser>();
favoriteAdviseGroupsAdviserStub.Setup(x => x.Advise(It.IsAny <IEnumerable <AdviseGroupContent> >(), It.IsAny <PlaybacksInfo>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(new[] { favoriteAdviseGroupAdvise1, favoriteAdviseGroupAdvise2 });
var settings = new AdviserSettings
{
PlaybacksBetweenFavoriteAdviseGroups = 5,
HighlyRatedSongsAdviser = new HighlyRatedSongsAdviserSettings
{
PlaybacksBetweenHighlyRatedSongs = 10,
},
};
var target = new CompositePlaylistAdviser(StubDiscGrouper(), rankBasedAdviserStub.Object, highlyRatedSongsAdviserStub.Object,
favoriteAdviseGroupsAdviserStub.Object, Mock.Of <ISessionDataService>(), Options.Create(settings));
// Act
var advises = (await target.Advise(Enumerable.Empty <DiscModel>(), 30, CancellationToken.None)).ToList();
// Assert
var expectedAdvises = new[]
{
highlyRatedSongsAdvise1,
favoriteAdviseGroupAdvise1,
rankedBasedAdvises[0], rankedBasedAdvises[1], rankedBasedAdvises[2], rankedBasedAdvises[3],
favoriteAdviseGroupAdvise2,
rankedBasedAdvises[4], rankedBasedAdvises[5], rankedBasedAdvises[6],
highlyRatedSongsAdvise2,
rankedBasedAdvises[7], rankedBasedAdvises[8], rankedBasedAdvises[9],
};
advises.Should().BeEquivalentTo(expectedAdvises);
}
public async Task Advise_IfSongsAreAdvised_ReturnsSongsWithHigherRankFirst()
{
// Arrange
var settings = new HighlyRatedSongsAdviserSettings
{
OneAdviseSongsNumber = 3,
MaxTerms = new[]
{
new MaxRatingTerm
{
Rating = RatingModel.R10,
Days = 30,
},
},
};
var song1 = CreateTestSong(1, RatingModel.R10, new DateTime(2017, 02, 01));
var song2 = CreateTestSong(2, RatingModel.R10, new DateTime(2017, 02, 01));
var song3 = CreateTestSong(3, RatingModel.R10, new DateTime(2017, 02, 01));
var adviseSet = CreateTestAdviseSet("1", new[] { song1, song2, song3 });
var adviseGroups = CreateAdviseGroups(adviseSet);
var playbacksInfo = new PlaybacksInfo(adviseGroups);
var adviseRankCalculatorStub = new Mock <IAdviseRankCalculator>();
adviseRankCalculatorStub.Setup(x => x.CalculateSongRank(song1, playbacksInfo)).Returns(0.25);
adviseRankCalculatorStub.Setup(x => x.CalculateSongRank(song2, playbacksInfo)).Returns(0.75);
adviseRankCalculatorStub.Setup(x => x.CalculateSongRank(song3, playbacksInfo)).Returns(0.50);
var clockStub = new Mock <IClock>();
clockStub.Setup(x => x.Now).Returns(new DateTime(2017, 10, 01));
var mocker = new AutoMocker();
mocker.Use(adviseRankCalculatorStub);
mocker.Use(clockStub);
mocker.Use(Options.Create(settings));
var target = mocker.CreateInstance <HighlyRatedSongsAdviser>();
// Act
var advises = await target.Advise(adviseGroups, playbacksInfo, CancellationToken.None);
// Assert
var expectedAdvises = new[]
{
AdvisedPlaylist.ForHighlyRatedSongs(new[] { song2, song3, song1 }),
};
advises.Should().BeEquivalentTo(expectedAdvises, x => x.WithStrictOrdering());
}
public void ForHighlyRatedSongs_DoesNotFillAdviseSet()
{
// Arrange
// Act
var target = AdvisedPlaylist.ForHighlyRatedSongs(Enumerable.Empty <SongModel>());
// Assert
target.AdviseSet.Should().BeNull();
}
public void ForHighlyRatedSongs_FillsTitleCorrectly()
{
// Arrange
// Act
var target = AdvisedPlaylist.ForHighlyRatedSongs(Enumerable.Empty <SongModel>());
// Assert
target.Title.Should().Be("Highly Rated Songs");
}
public void ForHighlyRatedSongs_FillsSongsCorrectly()
{
// Arrange
var song1 = new SongModel();
var song2 = new SongModel();
// Act
var target = AdvisedPlaylist.ForHighlyRatedSongs(new[] { song1, song2 });
// Assert
target.Songs.Should().BeEquivalentTo(new[] { song1, song2 }, x => x.WithStrictOrdering());
}
public void RegisterPlayback_IfPlaybackAdviseIsHighlyRatedSongs_SetsPlaybacksSinceHighlyRatedSongsPlaylistToZero()
{
// Arrange
var target = new PlaylistAdviserMemo(playbacksSinceHighlyRatedSongsPlaylist: 3, playbacksSinceFavoriteAdviseGroup: 5);
// Act
var newMemo = target.RegisterPlayback(AdvisedPlaylist.ForHighlyRatedSongs(Enumerable.Empty <SongModel>()));
// Assert
var expectedMemo = new PlaylistAdviserMemo(playbacksSinceHighlyRatedSongsPlaylist: 0, playbacksSinceFavoriteAdviseGroup: 6);
newMemo.Should().BeEquivalentTo(expectedMemo);
}
public async Task Advise_IfTooMuchSongsAreAdvised_SplitsThemIntoSmallerPlaylists()
{
// Arrange
var settings = new HighlyRatedSongsAdviserSettings
{
OneAdviseSongsNumber = 12,
MaxTerms = new[]
{
new MaxRatingTerm
{
Rating = RatingModel.R10,
Days = 30,
},
},
};
var songs1 = Enumerable.Range(1, 12).Select(id => CreateTestSong(id, RatingModel.R10, lastPlaybackTime: null)).ToList();
var songs2 = Enumerable.Range(13, 12).Select(id => CreateTestSong(id, RatingModel.R10, lastPlaybackTime: null)).ToList();
var adviseGroups = CreateAdviseGroups(CreateTestAdviseSet("1", songs1), CreateTestAdviseSet("2", songs2));
var playbacksInfo = new PlaybacksInfo(adviseGroups);
var clockStub = new Mock <IClock>();
clockStub.Setup(x => x.Now).Returns(new DateTime(2017, 10, 01));
var mocker = new AutoMocker();
mocker.Use(clockStub);
mocker.Use(Options.Create(settings));
var target = mocker.CreateInstance <HighlyRatedSongsAdviser>();
// Act
var advises = await target.Advise(adviseGroups, playbacksInfo, CancellationToken.None);
// Assert
var expectedAdvises = new[]
{
AdvisedPlaylist.ForHighlyRatedSongs(songs1),
AdvisedPlaylist.ForHighlyRatedSongs(songs2),
};
advises.Should().BeEquivalentTo(expectedAdvises, x => x.WithStrictOrdering());
}
public async Task Advise_ReturnsSongsWithHighRatingListenedEarlierThanConfiguredTerm()
{
// Arrange
var settings = new HighlyRatedSongsAdviserSettings
{
OneAdviseSongsNumber = 12,
MaxTerms = new[]
{
new MaxRatingTerm
{
Rating = RatingModel.R10,
Days = 30,
},
},
};
var songs = Enumerable.Range(1, 12).Select(id => CreateTestSong(id, RatingModel.R10, new DateTime(2017, 09, 01))).ToList();
var adviseSet = CreateTestAdviseSet("1", songs);
var adviseGroups = CreateAdviseGroups(adviseSet);
var playbacksInfo = new PlaybacksInfo(adviseGroups);
var clockStub = new Mock <IClock>();
clockStub.Setup(x => x.Now).Returns(new DateTime(2017, 10, 07));
var mocker = new AutoMocker();
mocker.Use(clockStub);
mocker.Use(Options.Create(settings));
var target = mocker.CreateInstance <HighlyRatedSongsAdviser>();
// Act
var advises = await target.Advise(adviseGroups, playbacksInfo, CancellationToken.None);
// Assert
var expectedAdvises = new[]
{
AdvisedPlaylist.ForHighlyRatedSongs(songs),
};
advises.Should().BeEquivalentTo(expectedAdvises, x => x.WithStrictOrdering());
}
public async Task Advise_IfPlaylistAdviserMemoIsLoaded_UsesPreviousPlaybacksSinceHighlyRatedSongs()
{
// Arrange
var settings = new AdviserSettings
{
HighlyRatedSongsAdviser = new HighlyRatedSongsAdviserSettings
{
PlaybacksBetweenHighlyRatedSongs = 10,
},
};
var highlyRatedSongsAdvise1 = AdvisedPlaylist.ForHighlyRatedSongs(Enumerable.Empty <SongModel>());
var highlyRatedSongsAdvise2 = AdvisedPlaylist.ForHighlyRatedSongs(Enumerable.Empty <SongModel>());
var rankBasedAdviserStub = new Mock <IPlaylistAdviser>();
rankBasedAdviserStub.Setup(x => x.Advise(It.IsAny <IEnumerable <AdviseGroupContent> >(), It.IsAny <PlaybacksInfo>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(Enumerable.Range(0, 100).Select(i => AdvisedPlaylist.ForAdviseSet(CreateTestAdviseSet(i))).ToList());
var highlyRatedSongsAdviserStub = new Mock <IPlaylistAdviser>();
highlyRatedSongsAdviserStub.Setup(x => x.Advise(It.IsAny <IEnumerable <AdviseGroupContent> >(), It.IsAny <PlaybacksInfo>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(new[] { highlyRatedSongsAdvise1, highlyRatedSongsAdvise2 });
var sessionDataServiceStub = new Mock <ISessionDataService>();
sessionDataServiceStub.Setup(x => x.GetData <PlaylistAdviserMemo>("PlaylistAdviserData", CancellationToken.None))
.ReturnsAsync(new PlaylistAdviserMemo(playbacksSinceHighlyRatedSongsPlaylist: 2, playbacksSinceFavoriteAdviseGroup: 0));
var target = new CompositePlaylistAdviser(StubDiscGrouper(), rankBasedAdviserStub.Object, highlyRatedSongsAdviserStub.Object,
StubEmptyPlaylistAdviser(), sessionDataServiceStub.Object, Options.Create(settings));
// Act
var advises = (await target.Advise(Enumerable.Empty <DiscModel>(), 30, CancellationToken.None)).ToList();
// Assert
advises.Where(x => x.AdvisedPlaylistType == AdvisedPlaylistType.HighlyRatedSongs).Should().HaveCount(2);
advises[7].Should().BeSameAs(highlyRatedSongsAdvise1);
advises[17].Should().BeSameAs(highlyRatedSongsAdvise2);
}
