private static void ConstructorAssertions(Verify verify, ObservableCollectionExtended <object> result, WeakNotifier weakNotifier, Notifier notifier)
{
var itemAssert = new ItemPropertyChangedEventTest(verify, result);
var itemAddedEventQueue = new Queue <Tuple <object, ItemEventArgs <object> > >();
result.ItemAdded += (s, e) => itemAddedEventQueue.Enqueue(Tuple.Create(s, e));
var itemRemovedEventQueue = new Queue <Tuple <object, ItemEventArgs <object> > >();
result.ItemRemoved += (s, e) => itemRemovedEventQueue.Enqueue(Tuple.Create(s, e));
weakNotifier.Age += 1;
itemAssert.ExpectEvent(weakNotifier, "Age");
notifier.Age += 1;
itemAssert.ExpectEvent(notifier, "Age");
var oldCount = result.Count;
result.Clear();
verify.AreEqual(oldCount, itemRemovedEventQueue.Count, "incorrect number of items reported as being removed");
weakNotifier.Age += 1;
notifier.Age += 1;
verify.AreEqual(0, result.Count, "The collection should be empty");
itemAssert.ExpectCountEquals(0, "ItemPropertyChanged events were fired when the collection was supposed to be empty.");
result.Add(weakNotifier);
result.Add(notifier);
verify.AreEqual(2, result.Count, "The new items were not added");
verify.AreEqual(2, itemAddedEventQueue.Count, "The new item events didn't fire");
CollectionAssert.AreEqual(result, result.ReadOnlyWrapper);
itemRemovedEventQueue.Clear();
result.RemoveAt(0);
verify.AreEqual(1, itemRemovedEventQueue.Count, "the item wasn't removed");
verify.AreSame(notifier, result[0], "the wrong item was removed");
CollectionAssert.AreEqual(result, result.ReadOnlyWrapper);
itemAddedEventQueue.Clear();
itemRemovedEventQueue.Clear();
result[0] = weakNotifier;
verify.AreSame(weakNotifier, result[0], "the item wasn't updated");
verify.AreEqual(1, itemAddedEventQueue.Count, "the add event for replacing an item didn't fire");
verify.AreEqual(1, itemRemovedEventQueue.Count, "the remove event for replacing an item didn't fire");
CollectionAssert.AreEqual(result, result.ReadOnlyWrapper);
}
public void ExtendedReadOnlyObservableCollection_OnItemPropertyChanged()
{
using (var verify = new Verify())
{
var list = new ObservableCollectionExtended <Notifier>();
var result = new ReadOnlyObservableCollectionExtended <Notifier>(list);
var itemPropertyAssert = new ItemPropertyChangedEventTest(verify, result);
var notifier = new Notifier();
list.Add(notifier);
notifier.Name = "Frank";
itemPropertyAssert.ExpectEvent(notifier, "Name");
}
}
private static void ConstructorAssertions(Verify verify, ObservableCollectionExtended<object> result, WeakNotifier weakNotifier, Notifier notifier)
{
var itemAssert = new ItemPropertyChangedEventTest(verify, result);
var itemAddedEventQueue = new Queue<Tuple<object, ItemEventArgs<object>>>();
result.ItemAdded += (s, e) => itemAddedEventQueue.Enqueue(Tuple.Create(s, e));
var itemRemovedEventQueue = new Queue<Tuple<object, ItemEventArgs<object>>>();
result.ItemRemoved += (s, e) => itemRemovedEventQueue.Enqueue(Tuple.Create(s, e));
weakNotifier.Age += 1;
itemAssert.ExpectEvent(weakNotifier, "Age");
notifier.Age += 1;
itemAssert.ExpectEvent(notifier, "Age");
var oldCount = result.Count;
result.Clear();
verify.AreEqual(oldCount, itemRemovedEventQueue.Count, "incorrect number of items reported as being removed");
weakNotifier.Age += 1;
notifier.Age += 1;
verify.AreEqual(0, result.Count, "The collection should be empty");
itemAssert.ExpectCountEquals(0, "ItemPropertyChanged events were fired when the collection was supposed to be empty.");
result.Add(weakNotifier);
result.Add(notifier);
verify.AreEqual(2, result.Count, "The new items were not added");
verify.AreEqual(2, itemAddedEventQueue.Count, "The new item events didn't fire");
CollectionAssert.AreEqual(result, result.ReadOnlyWrapper);
itemRemovedEventQueue.Clear();
result.RemoveAt(0);
verify.AreEqual(1, itemRemovedEventQueue.Count, "the item wasn't removed");
verify.AreSame(notifier, result[0], "the wrong item was removed");
CollectionAssert.AreEqual(result, result.ReadOnlyWrapper);
itemAddedEventQueue.Clear();
itemRemovedEventQueue.Clear();
result[0] = weakNotifier;
verify.AreSame(weakNotifier, result[0], "the item wasn't updated");
verify.AreEqual(1, itemAddedEventQueue.Count, "the add event for replacing an item didn't fire");
verify.AreEqual(1, itemRemovedEventQueue.Count, "the remove event for replacing an item didn't fire");
CollectionAssert.AreEqual(result, result.ReadOnlyWrapper);
}
public void ExtendedReadOnlyObservableCollection_OnItemPropertyChanged()
{
using (var verify = new Verify())
{
var list = new ObservableCollectionExtended<Notifier>();
var result = new ReadOnlyObservableCollectionExtended<Notifier>(list);
var itemPropertyAssert = new ItemPropertyChangedEventTest(verify, result);
var notifier = new Notifier();
list.Add(notifier);
notifier.Name = "Frank";
itemPropertyAssert.ExpectEvent(notifier, "Name");
}
}
