using System; using Avalonia.Media; using Xunit; namespace Avalonia.Visuals.UnitTests.Media { public class SolidColorBrushTests { [Fact] public void Changing_Color_Raises_Invalidated() { var target = new SolidColorBrush(Colors.Red); var raised = false; target.Invalidated += (s, e) => raised = true; target.Color = Colors.Green; Assert.True(raised); } } }