diff --git a/tests/Avalonia.Base.UnitTests/Collections/AvaloniaListTests.cs b/tests/Avalonia.Base.UnitTests/Collections/AvaloniaListTests.cs index f5ae4cc1e0..b59f272b0c 100644 --- a/tests/Avalonia.Base.UnitTests/Collections/AvaloniaListTests.cs +++ b/tests/Avalonia.Base.UnitTests/Collections/AvaloniaListTests.cs @@ -146,6 +146,23 @@ namespace Avalonia.Base.UnitTests.Collections Assert.True(raised); } + [Fact] + public void AddRange_IEnumerable_Should_Raise_Count_PropertyChanged() + { + var target = new AvaloniaList(new[] { 1, 2, 3, 4, 5 }); + var raised = false; + + target.PropertyChanged += (s, e) => { + Assert.Equal(e.PropertyName, nameof(target.Count)); + Assert.Equal(target.Count, 7); + raised = true; + }; + + target.AddRange(Enumerable.Range(6, 2)); + + Assert.True(raised); + } + [Fact] public void AddRange_Items_Should_Raise_Correct_CollectionChanged() {