Move gameplay test pieces to own namespace

osu.Game/Screens/Edit/GameplayTest/EditorPlayer.cs

@@ -0,0 +1,44 @@
+// 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 osu.Framework.Allocation;
+using osu.Framework.Screens;
+using osu.Game.Overlays;
+using osu.Game.Screens.Play;
+
+namespace osu.Game.Screens.Edit.GameplayTest
+{
+    public class EditorPlayer : Player
+    {
+        public EditorPlayer()
+            : base(new PlayerConfiguration { ShowResults = false })
+        {
+        }
+
+        [Resolved]
+        private MusicController musicController { get; set; }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            ScoreProcessor.HasCompleted.BindValueChanged(completed =>
+            {
+                if (completed.NewValue)
+                    Scheduler.AddDelayed(this.Exit, RESULTS_DISPLAY_DELAY);
+            });
+        }
+
+        protected override void PrepareReplay()
+        {
+            // don't record replays.
+        }
+
+        protected override bool CheckModsAllowFailure() => false; // never fail.
+
+        public override bool OnExiting(IScreen next)
+        {
+            musicController.Stop();
+            return base.OnExiting(next);
+        }
+    }
+}