public async Task GetStatsForChart_WithMultipleTrackEntries_ReturnsCorrectStats()
{
// Arrange
var lastFmFake = new FakeLastFmService();
var lastFmStub = lastFmFake.Object;
// Represents the tracks that will be returned over time
var tracksList = new List <List <LastFmChartTrack> >
{
new List <LastFmChartTrack>
{
new LastFmChartTrack {
Title = "Cool", Artist = "Dua Lipa", Rank = 1
},
new LastFmChartTrack {
Title = "Pretty Please", Artist = "Dua Lipa", Rank = 2
},
new LastFmChartTrack {
Title = "Hallucinate", Artist = "Dua Lipa", Rank = 3
},
new LastFmChartTrack {
Title = "WANNABE", Artist = "ITZY", Rank = 4
},
},
new List <LastFmChartTrack>
{
new LastFmChartTrack {
Title = "WANNABE", Artist = "ITZY", Rank = 1
},
new LastFmChartTrack {
Title = "Pretty Please", Artist = "Dua Lipa", Rank = 2
},
new LastFmChartTrack {
Title = "Cool", Artist = "Dua Lipa", Rank = 3
},
},
new List <LastFmChartTrack>
{
new LastFmChartTrack {
Title = "WANNABE", Artist = "ITZY", Rank = 1
},
new LastFmChartTrack {
Title = "Pretty Please", Artist = "Dua Lipa", Rank = 2
},
new LastFmChartTrack {
Title = "Hallucinate", Artist = "Dua Lipa", Rank = 3
},
new LastFmChartTrack {
Title = "Cool", Artist = "Dua Lipa", Rank = 4
},
}
};
var context = FakeThreeChartsContext.BuildInMemoryContext();
var chartDateService = new ChartDateService(context);
var repo = new ChartRepository(context);
var chartService = new ChartService(repo, chartDateService, lastFmStub);
// Act
var weeks = new List <ChartWeek>();
for (var i = 0; i < 3; i++)
{
var week = new ChartWeek
{
Owner = new User {
UserName = "******"
}, WeekNumber = i + 1
};
// Set LastFm fake to return correct tracks according to index
lastFmFake.Tracks = tracksList[i];
lastFmFake.SetupFake(); // Updates fake returns
var trackChart = await lastFmStub.GetWeeklyTrackChart("", 0, 0);
var albumChart = await lastFmStub.GetWeeklyAlbumChart("", 0, 0);
var artistChart = await lastFmStub.GetWeeklyArtistChart("", 0, 0);
week.ChartEntries = chartService.CreateEntriesForLastFmCharts(
trackChart.Value,
albumChart.Value,
artistChart.Value,
week
);
weeks.Add(week);
}
var results = weeks
.Select(w => w.ChartEntries)
.Select(entries =>
entries
.Select(entry => chartService.GetStatsForChartEntry(entry, weeks))
.ToList())
.ToList();
// Assert
// All stats on the first week should be .New
results[0].ForEach(r => r.stat.Should().Be(ChartEntryStat.New));
results[1].Should().BeEquivalentTo(
new List <(ChartEntryStat stat, string statText)>()
{
(ChartEntryStat.Increase, "+3"),
(ChartEntryStat.NoDiff, "="),
(ChartEntryStat.Decrease, "-2"),
}
);
results[2].Should().BeEquivalentTo(
new List <(ChartEntryStat stat, string statText)>()
{
(ChartEntryStat.NoDiff, "="),
(ChartEntryStat.NoDiff, "="),
(ChartEntryStat.Reentry, null),
(ChartEntryStat.Decrease, "-1"),
}
);
}