public void ClearOne()
{
var before = new[] { 1 };
var ints = new ObservableCollection <int>(before);
ints.Clear();
var actual = Diff.CollectionChange(new[] { 1 }, ints);
AssertEx.AreEqual(Diff.CreateRemoveEventArgs(1, 0), actual);
}
public void NoChangeNoEvent()
{
var change = Diff.CollectionChange(new[] { 1, 2, 3 }, new[] { 1, 2, 3 });
var notifier = new DummyNotifier();
var actual = notifier.SubscribeAll();
Notifier.Notify(notifier, change, null, notifier.PropertyChangedEventHandler, notifier.NotifyCollectionChangedEventHandler);
CollectionAssert.IsEmpty(actual);
}
public void RemoveLast()
{
var before = new[] { 1 };
var ints = new ObservableCollection <int>(before);
var expected = ints.CollectionChange();
ints.Remove(1);
var actual = Diff.CollectionChange(before, ints);
AssertEx.AreEqual(expected.Value, actual);
}
public void Insert(int index)
{
var before = new[] { 1, 2, 3 };
var ints = new ObservableCollection <int>(before);
var expected = ints.CollectionChange();
ints.Insert(index, 4);
var actual = Diff.CollectionChange(before, ints);
AssertEx.AreEqual(expected.Value, actual);
}
public void AddToEmpty()
{
var ints = new ObservableCollection <int>();
var expected = ints.CollectionChange();
ints.Add(1);
var actual = Diff.CollectionChange(new int[0], ints);
AssertEx.AreEqual(expected.Value, actual);
}
public void Replace()
{
var before = new[] { 1, 2, 3 };
var ints = new ObservableCollection <int>(before);
var expected = ints.CollectionChange();
ints[0] = 5;
var actual = Diff.CollectionChange(before, ints);
AssertEx.AreEqual(expected.Value, actual);
}
public void AddRefType()
{
var before = new[] { new Fake(), new Fake(), new Fake() };
var ints = new ObservableCollection <Fake>(before);
var expected = ints.CollectionChange();
ints.Add(new Fake());
var actual = Diff.CollectionChange(before, ints);
AssertEx.AreEqual(expected.Value, actual);
}
public void Remove(int index)
{
var before = new[] { 1, 2, 3 };
var ints = new ObservableCollection <int>(before);
var expected = ints.SubscribeAll();
var notifier = new DummyNotifier();
var actual = notifier.SubscribeAll();
ints.RemoveAt(index);
var change = Diff.CollectionChange(before, ints);
Notifier.Notify(notifier, change, null, notifier.PropertyChangedEventHandler, notifier.NotifyCollectionChangedEventHandler);
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
}
public void AddToEmpty()
{
var ints = new ObservableCollection <int>();
var expected = ints.SubscribeAll();
ints.Add(1);
var notifier = new DummyNotifier();
var actual = notifier.SubscribeAll();
var change = Diff.CollectionChange(new int[0], ints);
Notifier.Notify(notifier, change, null, notifier.PropertyChangedEventHandler, notifier.NotifyCollectionChangedEventHandler);
CollectionAssert.AreEqual(expected, actual, EventArgsComparer.Default);
}
public void NoChange()
{
var actual = Diff.CollectionChange(new[] { 1, 2, 3 }, new[] { 1, 2, 3 });
Assert.IsNull(actual);
}
