Button_Invokes_Doesnt_Execute_When_Button_Disabled test added

samples/Sandbox/MainWindow.axaml.cs

@@ -5,40 +5,17 @@ using Avalonia.Win32.WinRT.Composition;
 
 namespace Sandbox
 {
-    public partial class MainWindow : Window
+    public class MainWindow : Window
     {
         public MainWindow()
         {
-            InitializeComponent();
-#if DEBUG
+            this.InitializeComponent();
             this.AttachDevTools();
-#endif
         }
 
         private void InitializeComponent()
         {
             AvaloniaXamlLoader.Load(this);
-
-            var button = new Button
-            {
-                Content = "Tabulate to this button"
-            };
-
-            Content = button;
-            button.GotFocus += (_, _) =>
-            {
-                button.IsEnabled = false;
-                button.Content =
-                    $"Now this button is disabled ({nameof(IsEnabled)}:{button.IsEnabled},{nameof(IsEffectivelyEnabled)}:{button.IsEffectivelyEnabled}), but you can still press Enter";
-                button.KeyDown += (_, _) =>
-                {
-                    button.Content = "button got fired by KeyDown event";
-                };
-            };
-            button.Click += (_, _) =>
-            {
-                button.Content = "It just has been clicked.";
-            };
         }
     }
 }

tests/Avalonia.Controls.UnitTests/ButtonTests.cs

@@ -295,6 +295,20 @@ namespace Avalonia.Controls.UnitTests
             target.CommandParameter = false;
             Assert.False(target.IsEffectivelyEnabled);
         }
+        
+        [Fact]
+        public void Button_Invokes_Doesnt_Execute_When_Button_Disabled()
+        {
+            var target = new Button();
+            var raised = 0;
+
+            target.IsEnabled = false;
+            target.Click += (s, e) => ++raised;
+
+            target.RaiseEvent(new RoutedEventArgs(AccessKeyHandler.AccessKeyPressedEvent));
+
+            Assert.Equal(1, raised);
+        }
 
         private class TestButton : Button, IRenderRoot
         {