Add tests covering score preparation flow

osu.Game.Tests/Visual/Gameplay/TestScenePlayerScorePreparation.cs

@@ -0,0 +1,69 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Threading.Tasks;
+using NUnit.Framework;
+using osu.Framework.Screens;
+using osu.Framework.Testing;
+using osu.Game.Rulesets;
+using osu.Game.Scoring;
+using osu.Game.Screens.Ranking;
+
+namespace osu.Game.Tests.Visual.Gameplay
+{
+    public class TestScenePlayerScorePreparation : OsuPlayerTestScene
+    {
+        protected override bool AllowFail => false;
+
+        protected new PreparingPlayer Player => (PreparingPlayer)base.Player;
+
+        [SetUpSteps]
+        public override void SetUpSteps()
+        {
+            base.SetUpSteps();
+
+            // Ensure track has actually running before attempting to seek
+            AddUntilStep("wait for track to start running", () => Beatmap.Value.Track.IsRunning);
+        }
+
+        [Test]
+        public void TestPreparationOnResults()
+        {
+            AddUntilStep("wait for preparation", () => Player.PreparationCompleted);
+        }
+
+        [Test]
+        public void TestPreparationOnExit()
+        {
+            AddStep("exit", () => Player.Exit());
+            AddUntilStep("wait for preparation", () => Player.PreparationCompleted);
+        }
+
+        protected override TestPlayer CreatePlayer(Ruleset ruleset) => new PreparingPlayer();
+
+        public class PreparingPlayer : TestPlayer
+        {
+            public bool PreparationCompleted { get; private set; }
+
+            public bool ResultsCreated { get; private set; }
+
+            public PreparingPlayer()
+                : base(true, true)
+            {
+            }
+
+            protected override ResultsScreen CreateResults(ScoreInfo score)
+            {
+                var results = base.CreateResults(score);
+                ResultsCreated = true;
+                return results;
+            }
+
+            protected override Task PrepareScoreForResultsAsync(Score score)
+            {
+                PreparationCompleted = true;
+                return base.PrepareScoreForResultsAsync(score);
+            }
+        }
+    }
+}