Added unit tests

Terminal.Gui/Application/Application.Run.cs

@@ -508,6 +508,7 @@ public static partial class Application // Run (Begin, Run, End, Stop)
         if (ClearScreenNextIteration)
         {
             forceDraw = true;
+            ClearScreenNextIteration = false;
         }
         if (forceDraw)
         {

UnitTests/Application/ApplicationScreenTests.cs

@@ -0,0 +1,67 @@
+using Xunit.Abstractions;
+
+namespace Terminal.Gui.ApplicationTests.NavigationTests;
+
+public class ApplicationScreenTests (ITestOutputHelper output)
+{
+    [Fact]
+    public void ClearScreenNextIteration_Resets_To_False_After_LayoutAndDraw ()
+    {
+        // Arrange
+        Application.Init ();
+
+        // Act
+        Application.ClearScreenNextIteration = true;
+        Application.LayoutAndDraw ();
+
+        // Assert
+        Assert.False (Application.ClearScreenNextIteration);
+
+        // Cleanup
+        Application.ResetState (true);
+    }
+
+    [Fact]
+    [SetupFakeDriver]
+    public void ClearContents_Called_When_Top_Frame_Changes ()
+    {
+        // Arrange
+        Application.Init ();
+        Application.Top = new Toplevel ();
+        Application.TopLevels.Push (Application.Top);
+
+        int clearedContentsRaised = 0;
+
+        Application.Driver!.ClearedContents += (e, a) => clearedContentsRaised++;
+
+        // Act
+        Application.LayoutAndDraw ();
+
+        // Assert
+        Assert.Equal (0, clearedContentsRaised);
+
+        // Act
+        Application.Top.SetNeedsLayout ();
+        Application.LayoutAndDraw ();
+
+        // Assert
+        Assert.Equal (0, clearedContentsRaised);
+
+        // Act
+        Application.Top.X = 1;
+        Application.LayoutAndDraw ();
+
+        // Assert
+        Assert.Equal (1, clearedContentsRaised);
+
+        // Act
+        Application.Top.Width = 10;
+        Application.LayoutAndDraw ();
+
+        // Assert
+        Assert.Equal (2, clearedContentsRaised);
+
+        // Cleanup
+        Application.ResetState (true);
+    }
+}

bench.json

@@ -1,52 +0,0 @@
-[
-  {
-    "Scenario": "Adornments Demo",
-    "Duration": "00:00:00.1805368",
-    "IterationCount": 501,
-    "ClearedContentCount": 0,
-    "RefreshedCount": 503,
-    "UpdatedCount": 1,
-    "DrawCompleteCount": 82,
-    "LaidOutCount": 82
-  },
-  {
-    "Scenario": "All Views Tester",
-    "Duration": "00:00:00.1070009",
-    "IterationCount": 501,
-    "ClearedContentCount": 0,
-    "RefreshedCount": 503,
-    "UpdatedCount": 1,
-    "DrawCompleteCount": 103,
-    "LaidOutCount": 182
-  },
-  {
-    "Scenario": "Animation",
-    "Duration": "00:00:00.0675802",
-    "IterationCount": 501,
-    "ClearedContentCount": 0,
-    "RefreshedCount": 503,
-    "UpdatedCount": 1,
-    "DrawCompleteCount": 4,
-    "LaidOutCount": 4
-  },
-  {
-    "Scenario": "Arrangement",
-    "Duration": "00:00:00.1284709",
-    "IterationCount": 501,
-    "ClearedContentCount": 0,
-    "RefreshedCount": 503,
-    "UpdatedCount": 1,
-    "DrawCompleteCount": 123,
-    "LaidOutCount": 123
-  },
-  {
-    "Scenario": "ASCIICustomButtonTest",
-    "Duration": "00:00:01.0613372",
-    "IterationCount": 30,
-    "ClearedContentCount": 0,
-    "RefreshedCount": 32,
-    "UpdatedCount": 31,
-    "DrawCompleteCount": 4185,
-    "LaidOutCount": 2852
-  }
-]