From 6ee2c432771600666324ffe1ff77640ceab3f40e Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Fri, 30 Sep 2022 09:39:51 +0200
Subject: [PATCH] Added failing inheritance test.

---
 .../AvaloniaObjectTests_Inheritance.cs        | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tests/Avalonia.Base.UnitTests/AvaloniaObjectTests_Inheritance.cs b/tests/Avalonia.Base.UnitTests/AvaloniaObjectTests_Inheritance.cs
index d0768eae1f..c5cbda5325 100644
--- a/tests/Avalonia.Base.UnitTests/AvaloniaObjectTests_Inheritance.cs
+++ b/tests/Avalonia.Base.UnitTests/AvaloniaObjectTests_Inheritance.cs
@@ -112,6 +112,30 @@ namespace Avalonia.Base.UnitTests
             Assert.Equal("changed", child.GetValue(Class1.BazProperty));
         }
 
+        [Fact]
+        public void Setting_InheritanceParent_Raises_PropertyChanged_When_Parent_And_Grandparent_Has_Value_Set()
+        {
+            Class1 grandparent = new Class1();
+            Class2 parent = new Class2 { Parent = grandparent };
+            bool raised = false;
+
+            grandparent.SetValue(Class1.BazProperty, "changed1");
+            parent.SetValue(Class1.BazProperty, "changed2");
+
+            Class2 child = new Class2();
+            child.PropertyChanged += (s, e) =>
+                raised = s == child &&
+                         e.Property == Class1.BazProperty &&
+                         (string)e.OldValue == "bazdefault" &&
+                         (string)e.NewValue == "changed2" &&
+                         e.Priority == BindingPriority.Inherited;
+
+            child.Parent = parent;
+
+            Assert.True(raised);
+            Assert.Equal("changed2", child.GetValue(Class1.BazProperty));
+        }
+
         [Fact]
         public void Setting_InheritanceParent_Raises_PropertyChanged_For_Attached_Property_When_Parent_Has_Value_Set()
         {