From b1ad3161dd33119d57cf42715aae1f74a1157be9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bart=C5=82omiej=20Dach?= <dach.bartlomiej@gmail.com>
Date: Mon, 11 Oct 2021 21:25:02 +0200
Subject: [PATCH] Add failing test case for frame stable clock direction flip
 scenario

---
 .../TestSceneFrameStabilityContainer.cs       | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneFrameStabilityContainer.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneFrameStabilityContainer.cs
index 5eb71e92c2..881e3f097c 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneFrameStabilityContainer.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneFrameStabilityContainer.cs
@@ -103,6 +103,30 @@ namespace osu.Game.Tests.Visual.Gameplay
             checkFrameCount(0);
         }
 
+        [Test]
+        public void TestSeekToSameTimePreservesRate()
+        {
+            AddStep("set manual clock rate", () => manualClock.Rate = 1);
+            seekManualTo(5000);
+            createStabilityContainer();
+            checkRate(1);
+
+            seekManualTo(10000);
+            checkRate(1);
+
+            seekManualTo(10000);
+            checkRate(1);
+
+            seekManualTo(5000);
+            checkRate(-1);
+
+            seekManualTo(5000);
+            checkRate(-1);
+
+            seekManualTo(10000);
+            checkRate(1);
+        }
+
         private const int max_frames_catchup = 50;
 
         private void createStabilityContainer(double gameplayStartTime = double.MinValue) => AddStep("create container", () =>
@@ -116,6 +140,9 @@ namespace osu.Game.Tests.Visual.Gameplay
         private void checkFrameCount(int frames) =>
             AddAssert($"elapsed frames is {frames}", () => consumer.ElapsedFrames == frames);
 
+        private void checkRate(double rate) =>
+            AddAssert($"clock rate is {rate}", () => consumer.Clock.Rate == rate);
+
         public class ClockConsumingChild : CompositeDrawable
         {
             private readonly OsuSpriteText text;