Added extra test for Bounds/Margin.

And removed empty test.

tests/Avalonia.Controls.UnitTests/Presenters/ContentPresenterTests_Layout.cs

@@ -185,10 +185,5 @@ namespace Avalonia.Controls.UnitTests.Presenters
 
             Assert.Equal(new Rect(84, 0, 16, 16), content.Bounds);
         }
-
-        [Fact]
-        public void Padding_Is_Applied_To_TopLeft_Aligned_Content()
-        {
-        }
     }
 }

tests/Avalonia.Layout.UnitTests/ArrangeTests.cs

@@ -8,6 +8,22 @@ namespace Avalonia.Layout.UnitTests
 {
     public class ArrangeTests
     {
+        [Fact]
+        public void Bounds_Should_Not_Include_Margin()
+        {
+            var target = new Decorator
+            {
+                Width = 100,
+                Height = 100,
+                Margin = new Thickness(5),
+            };
+
+            Assert.False(target.IsMeasureValid);
+            target.Measure(Size.Infinity);
+            target.Arrange(new Rect(target.DesiredSize));
+            Assert.Equal(new Rect(5, 5, 100, 100), target.Bounds);
+        }
+
         [Fact]
         public void Margin_Should_Be_Subtracted_From_Arrange_FinalSize()
         {