public void CanWrapCollectionCollection()
{
var originalCollection = new ObservableCollection <ItemMetadata>();
IViewsCollection viewsCollection = new ViewsCollection(originalCollection, x => true);
Assert.AreEqual(0, viewsCollection.Count());
var item = new object();
originalCollection.Add(new ItemMetadata(item));
Assert.AreEqual(1, viewsCollection.Count());
Assert.AreSame(item, viewsCollection.First());
}
public void CanWrapCollectionCollection()
{
var originalCollection = new ObservableCollection <IView>();
IViewsCollection viewsCollection = new ViewsCollection(originalCollection);
Assert.AreEqual(0, viewsCollection.Count());
var item = new MockView();
originalCollection.Add(item);
Assert.AreEqual(1, viewsCollection.Count());
Assert.AreSame(item, viewsCollection.First());
}
public void CanFilterCollection()
{
var originalCollection = new ObservableCollection <ItemMetadata>();
IViewsCollection viewsCollection = new ViewsCollection(originalCollection, x => x.Name == "Possible");
originalCollection.Add(new ItemMetadata(new object()));
Assert.AreEqual(0, viewsCollection.Count());
var item = new object();
originalCollection.Add(new ItemMetadata(item)
{
Name = "Possible"
});
Assert.AreEqual(1, viewsCollection.Count());
Assert.AreSame(item, viewsCollection.First());
}
public void ChangingMetadataOnItemAddsOrRemovesItFromTheFilteredCollection()
{
var originalCollection = new ObservableCollection <ItemMetadata>();
IViewsCollection viewsCollection = new ViewsCollection(originalCollection, x => x.IsActive);
bool addedToCollection = false;
bool removedFromCollection = false;
viewsCollection.CollectionChanged += (s, e) =>
{
if (e.Action == NotifyCollectionChangedAction.Add)
{
addedToCollection = true;
}
else if (e.Action == NotifyCollectionChangedAction.Remove)
{
removedFromCollection = true;
}
};
originalCollection.Add(new ItemMetadata(new object())
{
IsActive = true
});
Assert.IsTrue(addedToCollection);
Assert.IsFalse(removedFromCollection);
addedToCollection = false;
originalCollection[0].IsActive = false;
Assert.AreEqual(0, viewsCollection.Count());
Assert.IsTrue(removedFromCollection);
Assert.IsFalse(addedToCollection);
Assert.AreEqual(0, viewsCollection.Count());
addedToCollection = false;
removedFromCollection = false;
originalCollection[0].IsActive = true;
Assert.AreEqual(1, viewsCollection.Count());
Assert.IsTrue(addedToCollection);
Assert.IsFalse(removedFromCollection);
}
public void EnumeratesWrappedItems()
{
var originalCollection = new ObservableCollection <ItemMetadata>()
{
new ItemMetadata(new object()),
new ItemMetadata(new object())
};
IViewsCollection viewsCollection = new ViewsCollection(originalCollection, x => true);
Assert.AreEqual(2, viewsCollection.Count());
Assert.AreSame(originalCollection[0].Item, viewsCollection.ElementAt(0));
Assert.AreSame(originalCollection[1].Item, viewsCollection.ElementAt(1));
}