public void GetPreviousSongPathSecondCallWithTwoItemsShouldReturnStringEmpty()
{
// Arrange
var playlist = new SimplePlaylist();
playlist.Add(@"C:\music\song01.mp3");
playlist.Add(@"C:\music\song02.mp3");
playlist.GetNextSongPath();
string previousSongPath;
// Act
playlist.GetPreviousSongPath();
previousSongPath = playlist.GetPreviousSongPath();
// Assert
Assert.Equal(string.Empty, previousSongPath);
}
public void GetPreviousSongPathWithEmptyPlaylistShouldReturnStringEmpty()
{
// Arrange
var playlist = new SimplePlaylist();
string previousSongPath = "dummy-value";
// Act
previousSongPath = playlist.GetPreviousSongPath();
// Assert
Assert.Equal(string.Empty, previousSongPath);
}
public void GetPreviousSongPathWithOneItemShouldReturnStringEmpty()
{
// Arrange
var playlist = new SimplePlaylist();
playlist.Add(@"C:\music\song.mp3");
string previousSongPath;
// Act
previousSongPath = playlist.GetPreviousSongPath();
// Assert
Assert.Equal(string.Empty, previousSongPath);
}
public void GetPreviousSongPathWithMoreThanOneItemShouldReturnPreviousItem()
{
// Arrange
var playlist = new SimplePlaylist();
var song01 = @"C:\music\song01.mp3";
playlist.Add(song01);
playlist.Add(@"C:\music\song02.mp3");
playlist.GetNextSongPath();
string previousSongPath;
// Act
previousSongPath = playlist.GetPreviousSongPath();
// Assert
Assert.Equal(song01, previousSongPath);
}
