Split out testcase player for use in slider input tests

osu.Game.Rulesets.Osu.Tests/TestCaseSliderInput.cs

@@ -25,7 +25,7 @@ using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
-    public class TestCaseSliderInput : OsuTestCase
+    public class TestCaseSliderInput : TestCasePlayerBase
     {
         public override IReadOnlyList<Type> RequiredTypes => new[]
         {

osu.Game/Tests/Visual/TestCasePlayer.cs

@@ -16,7 +16,7 @@ using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual
 {
-    public abstract class TestCasePlayer : ScreenTestCase
+    public abstract class TestCasePlayer : TestCasePlayerBase
     {
         private readonly Ruleset ruleset;
 
@@ -121,14 +121,6 @@ namespace osu.Game.Tests.Visual
             return player;
         }
 
-        protected override void Update()
-        {
-            base.Update();
-
-            // note that this will override any mod rate application
-            Beatmap.Value.Track.Rate = Clock.Rate;
-        }
-
         protected virtual Player CreatePlayer(Ruleset ruleset) => new Player
         {
             AllowPause = false,

osu.Game/Tests/Visual/TestCasePlayerBase.cs

@@ -0,0 +1,16 @@
+// Copyright (c) 2007-2019 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCasePlayerBase : ScreenTestCase
+    {
+        protected override void Update()
+        {
+            base.Update();
+
+            // note that this will override any mod rate application
+            Beatmap.Value.Track.Rate = Clock.Rate;
+        }
+    }
+}