| public Insert ( int index, IMediaFile item ) : void | ||
| index | int | |
| item | IMediaFile | |
| Результат | void | |
public void Insert_OutOfRange()
{
var queue = new MediaQueue();
var tracks = new[]
{
new MediaFile(),
};
queue.AddRange(tracks);
queue.SetIndexAsCurrent(0);
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);
Assert.Throws<ArgumentOutOfRangeException>(() =>
{
queue.Insert(2, new MediaFile());
});
Assert.AreEqual(1, queue.Count);
Assert.AreEqual(tracks[0], queue.Current);
Assert.AreEqual(0, queue.Index);
Assert.AreEqual(RepeatType.None, queue.Repeat);
Assert.AreEqual(false, queue.Shuffle);
Assert.AreEqual(0, propertyChangedEvents.Count);
Assert.AreEqual(0, collectionChangedEvents.Count);
}
public void Insert_Empty()
{
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 newMediaFile = new MediaFile();
queue.Insert(0, newMediaFile);
Assert.AreEqual(1, queue.Count);
Assert.AreEqual(newMediaFile, queue.Current);
Assert.AreEqual(0, queue.Index);
Assert.AreEqual(RepeatType.None, queue.Repeat);
Assert.AreEqual(false, 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);
}
public void Insert_OutOfRange_Empty()
{
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 newMediaFile = new MediaFile();
Assert.Throws<ArgumentOutOfRangeException>(() =>
{
queue.Insert(1, newMediaFile);
});
Assert.AreEqual(0, queue.Count);
Assert.AreEqual(null, queue.Current);
Assert.AreEqual(-1, queue.Index);
Assert.AreEqual(RepeatType.None, queue.Repeat);
Assert.AreEqual(false, queue.Shuffle);
Assert.AreEqual(0, propertyChangedEvents.Count);
Assert.AreEqual(0, collectionChangedEvents.Count);
}
public void Insert_PostCurrent()
{
var queue = new MediaQueue();
var tracks = new[]
{
new MediaFile(),
};
queue.AddRange(tracks);
queue.SetIndexAsCurrent(0);
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);
queue.Insert(1, new MediaFile());
Assert.AreEqual(2, queue.Count);
Assert.AreEqual(tracks[0], queue.Current);
Assert.AreEqual(0, queue.Index);
Assert.AreEqual(RepeatType.None, queue.Repeat);
Assert.AreEqual(false, queue.Shuffle);
Assert.AreEqual(0, propertyChangedEvents.Where(e => e.PropertyName == "Current").Count());
Assert.AreEqual(0, propertyChangedEvents.Where(e => e.PropertyName == "Index").Count());
Assert.AreEqual(1, propertyChangedEvents.Where(e => e.PropertyName == "Count").Count());
Assert.AreEqual(1, propertyChangedEvents.Count);
Assert.AreEqual(1, collectionChangedEvents.Where(e => e.NewItems?.Count == 1 && e.OldItems == null).Count());
Assert.AreEqual(1, collectionChangedEvents.Count);
}