public void RemoveAll_Should_Send_Multiple_Notifications_For_Sequential_Range_With_Nonsequential_Duplicate_Source_Items()
{
var items = Enumerable.Range(0, 10).Select(x => $"Item {x}");
var target = new AvaloniaList <string>(items.Concat(items));
var raised = 0;
var toRemove = new[] { "Item 5", "Item 6", "Item 7" };
target.CollectionChanged += (s, e) =>
{
Assert.Equal(NotifyCollectionChangedAction.Remove, e.Action);
if (raised == 0)
{
Assert.Equal(15, e.OldStartingIndex);
Assert.Equal(toRemove, e.OldItems);
}
else
{
Assert.Equal(5, e.OldStartingIndex);
Assert.Equal(toRemove, e.OldItems);
}
++raised;
};
target.RemoveAll(toRemove);
Assert.Equal(2, raised);
}
public void RemoveAll_Should_Send_Multiple_Notifications_For_Non_Sequential_Range()
{
var target = new AvaloniaList <string>(Enumerable.Range(0, 10).Select(x => $"Item {x}"));
var raised = 0;
var toRemove = new[]
{
new[] { "Item 2", "Item 3" },
new[] { "Item 5", "Item 6" }
};
target.CollectionChanged += (s, e) =>
{
Assert.Equal(NotifyCollectionChangedAction.Remove, e.Action);
if (raised == 0)
{
Assert.Equal(5, e.OldStartingIndex);
Assert.Equal(toRemove[1], e.OldItems);
}
else
{
Assert.Equal(2, e.OldStartingIndex);
Assert.Equal(toRemove[0], e.OldItems);
}
++raised;
};
target.RemoveAll(toRemove[0].Concat(toRemove[1]));
Assert.Equal(2, raised);
}
public void RemoveAll_Should_Send_Single_Notification_For_Sequential_Range_With_Duplicate_Source_Items()
{
var items = Enumerable.Range(0, 20).Select(x => $"Item {x / 2}");
var target = new AvaloniaList <string>(items);
var toRemove = new[] { "Item 5", "Item 6", "Item 7" };
var raised = 0;
target.CollectionChanged += (s, e) =>
{
Assert.Equal(NotifyCollectionChangedAction.Remove, e.Action);
Assert.Equal(10, e.OldStartingIndex);
Assert.Equal(new[]
{
"Item 5",
"Item 5",
"Item 6",
"Item 6",
"Item 7",
"Item 7",
}, e.OldItems);
++raised;
};
target.RemoveAll(toRemove);
Assert.Equal(1, raised);
}
public void RemoveAll_Should_Handle_Empty_List()
{
var target = new AvaloniaList <string>();
var toRemove = new[] { "Item 5", "Item 6", "Item 7" };
var raised = 0;
target.CollectionChanged += (s, e) =>
{
++raised;
};
target.RemoveAll(toRemove);
Assert.Equal(0, raised);
}
public void RemoveAll_Should_Not_Send_Notification_For_Items_Not_Present()
{
var target = new AvaloniaList <string>(Enumerable.Range(0, 10).Select(x => $"Item {x}"));
var toRemove = new[] { "Item 5", "Item 6", "Item 7", "Not present" };
var raised = 0;
target.CollectionChanged += (s, e) =>
{
Assert.Equal(NotifyCollectionChangedAction.Remove, e.Action);
Assert.Equal(5, e.OldStartingIndex);
Assert.Equal(toRemove.Take(3).ToArray(), e.OldItems);
++raised;
};
target.RemoveAll(toRemove);
Assert.Equal(1, raised);
}
public void RemoveAll_With_Null_Should_Throw_Exception()
{
var target = new AvaloniaList <int>();
Assert.Throws <ArgumentNullException>(() => target.RemoveAll(null));
}
public void RemoveAll_With_Null_Should_Throw_Exception()
{
var target = new AvaloniaList<int>();
Assert.Throws<ArgumentNullException>(() => target.RemoveAll(null));
}