diff --git a/tests/Avalonia.Controls.UnitTests/SelectionModelTests.cs b/tests/Avalonia.Controls.UnitTests/SelectionModelTests.cs index 3e908681e6..b9149bf42b 100644 --- a/tests/Avalonia.Controls.UnitTests/SelectionModelTests.cs +++ b/tests/Avalonia.Controls.UnitTests/SelectionModelTests.cs @@ -1360,6 +1360,38 @@ namespace Avalonia.Controls.UnitTests Assert.Equal(3, target.SelectedItems.Count); } + [Fact] + public void Not_Enumerating_Changes_Does_Not_Prevent_Further_Operations() + { + var data = new[] { "foo", "bar", "baz" }; + var target = new SelectionModel { Source = data }; + + target.SelectionChanged += (s, e) => { }; + + target.SelectAll(); + target.ClearSelection(); + } + + [Fact] + public void Can_Change_Selection_From_SelectionChanged() + { + var data = new[] { "foo", "bar", "baz" }; + var target = new SelectionModel { Source = data }; + var raised = 0; + + target.SelectionChanged += (s, e) => + { + if (raised++ == 0) + { + target.ClearSelection(); + } + }; + + target.SelectAll(); + + Assert.Equal(2, raised); + } + private int GetSubscriberCount(AvaloniaList list) { return ((INotifyCollectionChangedDebug)list).GetCollectionChangedSubscribers()?.Length ?? 0;