public void Basic()
{
var queue = new MediaQueue();
IList <NotifyCollectionChangedEventArgs> collectionChangedEvents = new List <NotifyCollectionChangedEventArgs>();
IList <PropertyChangedEventArgs> propertyChangedEvents = new List <PropertyChangedEventArgs>();
queue.CollectionChanged += (sender, e) => collectionChangedEvents.Add(e);
queue.PropertyChanged += (sender, e) => propertyChangedEvents.Add(e);
var tracks = new[]
{
new MediaFile(),
new MediaFile(),
};
queue.Add(tracks[0]);
Assert.AreEqual(1, queue.Count);
Assert.AreEqual(tracks[0], queue.Current);
Assert.AreEqual(0, queue.Index);
Assert.AreEqual(RepeatType.None, queue.Repeat);
Assert.AreEqual(RepeatType.None, queue.Shuffle);
Assert.AreEqual(1, propertyChangedEvents.Where(e => e.PropertyName == "Current").Count());
Assert.AreEqual(1, propertyChangedEvents.Where(e => e.PropertyName == "Index").Count());
Assert.AreEqual(1, propertyChangedEvents.Where(e => e.PropertyName == "Count").Count());
Assert.AreEqual(3, propertyChangedEvents.Count);
Assert.AreEqual(1, collectionChangedEvents.Where(e => e.NewItems.Count == 1 && e.OldItems == null).Count());
Assert.AreEqual(1, collectionChangedEvents.Count);
queue.Add(tracks[1]);
Assert.AreEqual(2, queue.Count);
Assert.AreEqual(tracks[0], queue.Current);
Assert.AreEqual(0, queue.Index);
Assert.AreEqual(RepeatType.None, queue.Repeat);
Assert.AreEqual(RepeatType.None, queue.Shuffle);
Assert.AreEqual(1, propertyChangedEvents.Where(e => e.PropertyName == "Current").Count());
Assert.AreEqual(1, propertyChangedEvents.Where(e => e.PropertyName == "Index").Count());
Assert.AreEqual(2, propertyChangedEvents.Where(e => e.PropertyName == "Count").Count());
Assert.AreEqual(4, propertyChangedEvents.Count);
Assert.AreEqual(2, collectionChangedEvents.Where(e => e.NewItems.Count == 1 && e.OldItems == null).Count());
Assert.AreEqual(2, collectionChangedEvents.Count);
}
public void WhenAddingItemsWhileShuffled_OrderIsSameAsBeforeButWithExtraItem()
{
var arr = new[]
{
new MediaFile(),
new MediaFile(),
new MediaFile(),
new MediaFile(),
new MediaFile(),
new MediaFile(),
new MediaFile(),
new MediaFile(),
new MediaFile(),
new MediaFile(),
new MediaFile()
};
Console.WriteLine("Original: {0}", string.Join(",", arr.Select(x => x.Id)));
var queue = new MediaQueue();
Console.WriteLine("Current Index: {0}", queue.Index);
queue.AddRange(arr);
queue.ToggleShuffle();
queue.Add(new MediaFile());
Console.WriteLine("Shuffled: {0}", string.Join(",", queue.Cast <MediaFile>().Select(x => x.Id)));
queue.ToggleShuffle();
Console.WriteLine("Unshuffled: {0}", string.Join(",", queue.Cast <MediaFile>().Select(x => x.Id)));
CollectionAssert.AllItemsAreUnique(queue.Cast <MediaFile>().Select(x => x.Id));
Assert.AreEqual(arr[0].Id, queue.Cast <MediaFile>().ElementAt(0).Id);
Assert.AreEqual(arr[1].Id, queue.Cast <MediaFile>().ElementAt(1).Id);
Assert.AreEqual(arr[2].Id, queue.Cast <MediaFile>().ElementAt(2).Id);
Assert.AreEqual(arr[3].Id, queue.Cast <MediaFile>().ElementAt(3).Id);
Assert.AreEqual(arr[4].Id, queue.Cast <MediaFile>().ElementAt(4).Id);
Assert.AreEqual(arr[5].Id, queue.Cast <MediaFile>().ElementAt(5).Id);
Assert.AreEqual(arr[6].Id, queue.Cast <MediaFile>().ElementAt(6).Id);
Assert.AreEqual(arr[7].Id, queue.Cast <MediaFile>().ElementAt(7).Id);
Assert.AreEqual(arr[8].Id, queue.Cast <MediaFile>().ElementAt(8).Id);
Assert.AreEqual(arr[9].Id, queue.Cast <MediaFile>().ElementAt(9).Id);
Assert.AreEqual(arr[10].Id, queue.Cast <MediaFile>().ElementAt(10).Id);
Assert.AreEqual(99, queue.Cast <MediaFile>().Last().Id);
Assert.AreEqual(arr.Length + 1, queue.Count, "The array length is different");
}