From fe4866d763539e0471785b80f705e58a1def2104 Mon Sep 17 00:00:00 2001
From: Andrey Kunchev <donandren@gmail.com>
Date: Fri, 25 Oct 2019 15:04:05 +0300
Subject: [PATCH] issue: #3141 add failing tests for grid: when col/row are
 added  grid doesn't trigger layout update

---
 .../Avalonia.Controls.UnitTests/GridTests.cs  | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/tests/Avalonia.Controls.UnitTests/GridTests.cs b/tests/Avalonia.Controls.UnitTests/GridTests.cs
index 353e5ecd42..84ae12984c 100644
--- a/tests/Avalonia.Controls.UnitTests/GridTests.cs
+++ b/tests/Avalonia.Controls.UnitTests/GridTests.cs
@@ -1472,6 +1472,27 @@ namespace Avalonia.Controls.UnitTests
             });
         }
 
+        [Fact]
+        public void Add_Column_Should_Invalidate_Grid()
+        {
+            var grid = new Grid { ColumnDefinitions = ColumnDefinitions.Parse("1*,1*") };
+
+            Change_Propery_And_Verify_Measure_Requested(grid, () =>
+            {
+                grid.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(5)));
+            });
+        }
+
+        [Fact]
+        public void Add_Row_Should_Invalidate_Grid()
+        {
+            var grid = new Grid { RowDefinitions = RowDefinitions.Parse("1*,1*") };
+
+            Change_Propery_And_Verify_Measure_Requested(grid, () =>
+            {
+                grid.RowDefinitions.Add(new RowDefinition(new GridLength(5)));
+            });
+        }
         private static void Change_Propery_And_Verify_Measure_Requested(Grid grid, Action change)
         {
             grid.Measure(new Size(100, 100));