From 06b7515b48e284750872875e2cd53d1f77c2284c Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@users.noreply.github.com>
Date: Mon, 24 Apr 2023 18:55:19 +0200
Subject: [PATCH] Added failing test for #11076.

---
 .../Layout/LayoutManagerTests.cs              | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/tests/Avalonia.Base.UnitTests/Layout/LayoutManagerTests.cs b/tests/Avalonia.Base.UnitTests/Layout/LayoutManagerTests.cs
index 9f13520086..09f78c5a6c 100644
--- a/tests/Avalonia.Base.UnitTests/Layout/LayoutManagerTests.cs
+++ b/tests/Avalonia.Base.UnitTests/Layout/LayoutManagerTests.cs
@@ -59,6 +59,29 @@ namespace Avalonia.Base.UnitTests.Layout
             Assert.False(control.Arranged);
         }
 
+        [Fact]
+        public void Lays_Out_Descendents_That_Were_Invalidated_While_Ancestor_Was_Not_Visible()
+        {
+            // Issue #11076
+            var control = new LayoutTestControl();
+            var parent = new Decorator { Child = control };
+            var grandparent = new Decorator { Child = parent };
+            var root = new LayoutTestRoot { Child = grandparent };
+
+            root.LayoutManager.ExecuteInitialLayoutPass();
+
+            grandparent.IsVisible = false;
+            control.InvalidateMeasure();
+            root.LayoutManager.ExecuteInitialLayoutPass();
+
+            grandparent.IsVisible = true;
+
+            root.LayoutManager.ExecuteLayoutPass();
+            
+            Assert.True(control.IsMeasureValid);
+            Assert.True(control.IsArrangeValid);
+        }
+
         [Fact]
         public void Arranges_InvalidateArranged_Control()
         {