public void CanGetNextSong()
{
// setup/arrange
var songs = new Song[]
{
new Song
{
Owner = "Mike",
Time = "00:12",
},
new Song
{
Owner = "Mike",
Time = "01:00"
},
new Song
{
Owner = "Mike",
Time = "5:00"
}
};
NextSongGenerator gen = new NextSongGenerator(songs);
var song = gen.GetNext(8 * 60);
Assert.NotNull(song);
Assert.Equal(1, gen.Counter);
gen = new NextSongGenerator(songs);
song = gen.GetNext(0);
Assert.Null(song);
Assert.Equal(0, gen.Counter);
gen = new NextSongGenerator(songs);
song = gen.GetNext(11);
Assert.Null(song);
Assert.Equal(0, gen.Counter);
gen = new NextSongGenerator(songs);
song = gen.GetNext(60);
Assert.NotNull(song);
gen = new NextSongGenerator(songs);
song = gen.GetNext(61);
Assert.NotNull(song);
Assert.Equal(12, song.TimeInSeconds);
song = gen.GetNext(61);
Assert.NotNull(song);
Assert.Equal(60, song.TimeInSeconds);
song = gen.GetNext(61);
Assert.NotNull(song);
Assert.Equal(12, song.TimeInSeconds);
}
public void CanReturnTheNextSongThatFitOnTheTimeAllocated()
{
// setup/arrange
var songs = new Song[]
{
new Song
{
Owner = "Mike",
Time = "00:12",
},
// this will not return since this is beyond 61 secs
new Song
{
Owner = "Mike",
Time = "5:00"
},
new Song
{
Owner = "Mike",
Time = "01:00"
},
};
NextSongGenerator gen = new NextSongGenerator(songs);
gen = new NextSongGenerator(songs);
var song = gen.GetNext(61);
Assert.NotNull(song);
Assert.Equal(12, song.TimeInSeconds);
song = gen.GetNext(61);
Assert.NotNull(song);
Assert.Equal(60, song.TimeInSeconds);
song = gen.GetNext(61);
Assert.NotNull(song);
Assert.Equal(12, song.TimeInSeconds);
}
public void NextSongReturnNullIfNoAvailableTime()
{
// setup/arrange
var songs = new Song[]
{
new Song
{
Owner = "Mike",
Time = "00:12",
},
new Song
{
Owner = "Mike",
Time = "01:00"
},
new Song
{
Owner = "Mike",
Time = "5:00"
}
};
NextSongGenerator gen;
gen = new NextSongGenerator(songs);
var song = gen.GetNext(0);
Assert.Null(song);
Assert.Equal(0, gen.Counter);
gen = new NextSongGenerator(songs);
song = gen.GetNext(11);
Assert.Null(song);
Assert.Equal(0, gen.Counter);
}