public void CreateDerivedList_Handles_RemoveRange()
{
var source = new AvaloniaList <int>(new[] { 0, 1, 2, 3 });
var target = source.CreateDerivedList(x => new Wrapper(x));
source.RemoveRange(1, 2);
var result = target.Select(x => x.Value).ToList();
Assert.Equal(source, result);
}
public void Can_Decrease_Number_Of_Materialized_Items_By_Removing_From_Source_Collection()
{
var items = new AvaloniaList <string>(Enumerable.Range(0, 20).Select(x => $"Item {x}"));
var target = new ListBox
{
Template = ListBoxTemplate(),
Items = items,
ItemTemplate = new FuncDataTemplate <string>((x, _) => new TextBlock {
Height = 10
})
};
Prepare(target);
target.Scroll.Offset = new Vector(0, 1);
items.RemoveRange(0, 11);
}