Fix TestCasePlayer not working as expected

osu.Game/Screens/Play/Player.cs

@@ -46,6 +46,8 @@ namespace osu.Game.Screens.Play
 
         public bool HasFailed { get; private set; }
 
+        public bool AllowPause { get; set; } = true;
+
         public int RestartCount;
 
         private IAdjustableClock adjustableSourceClock;
@@ -158,7 +160,7 @@ namespace osu.Game.Screens.Play
                     FramedClock = offsetClock,
                     OnRetry = Restart,
                     OnQuit = Exit,
-                    CheckCanPause = () => ValidForResume && !HasFailed && !RulesetContainer.HasReplayLoaded,
+                    CheckCanPause = () => AllowPause && ValidForResume && !HasFailed && !RulesetContainer.HasReplayLoaded,
                     Retries = RestartCount,
                     OnPause = () => {
                         hudOverlay.KeyCounter.IsCounting = pauseContainer.IsPaused;
@@ -355,7 +357,7 @@ namespace osu.Game.Screens.Play
 
         protected override bool OnExiting(Screen next)
         {
-            if (HasFailed || !ValidForResume || pauseContainer?.AllowExit != false || RulesetContainer?.HasReplayLoaded != false)
+            if (!AllowPause || HasFailed || !ValidForResume || pauseContainer?.AllowExit != false || RulesetContainer?.HasReplayLoaded != false)
             {
                 // In the case of replays, we may have changed the playback rate.
                 applyRateFromMods();

osu.Game/Tests/Visual/ScreenTestCase.cs

@@ -0,0 +1,52 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Screens;
+using osu.Game.Screens;
+
+namespace osu.Game.Tests.Visual
+{
+    /// <summary>
+    /// A test case which can be used to test a screen (that relies on OnEntering being called to execute startup instructions).
+    /// </summary>
+    public abstract class ScreenTestCase : OsuTestCase
+    {
+        private readonly TestOsuScreen baseScreen;
+
+        protected ScreenTestCase()
+        {
+            Add(baseScreen = new TestOsuScreen());
+        }
+
+        protected void LoadScreen(OsuScreen screen) => baseScreen.LoadScreen(screen);
+
+        public class TestOsuScreen : OsuScreen
+        {
+            public TestOsuScreen()
+            {
+            }
+
+            private OsuScreen nextScreen;
+
+            public void LoadScreen(OsuScreen screen) => Schedule(() =>
+            {
+                nextScreen = screen;
+
+                if (IsCurrentScreen)
+                {
+                    Push(screen);
+                    nextScreen = null;
+                }
+                else
+                    MakeCurrent();
+            });
+
+            protected override void OnResuming(Screen last)
+            {
+                base.OnResuming(last);
+                if (nextScreen != null)
+                    LoadScreen(nextScreen);
+            }
+        }
+    }
+}

osu.Game/Tests/Visual/TestCasePlayer.cs

@@ -17,7 +17,7 @@ using OpenTK.Graphics;
 
 namespace osu.Game.Tests.Visual
 {
-    public abstract class TestCasePlayer : OsuTestCase
+    public abstract class TestCasePlayer : ScreenTestCase
     {
         private readonly Type ruleset;
 
@@ -44,6 +44,7 @@ namespace osu.Game.Tests.Visual
             {
                 RelativeSizeAxes = Framework.Graphics.Axes.Both,
                 Colour = Color4.Black,
+                Depth = int.MaxValue
             });
 
             string instantiation = ruleset?.AssemblyQualifiedName;
@@ -77,19 +78,17 @@ namespace osu.Game.Tests.Visual
             if (Player != null)
                 Remove(Player);
 
-            Add(Player = CreatePlayer(working, instance));
+            LoadScreen(CreatePlayer(working, instance));
         }
 
-        protected virtual Player CreatePlayer(WorkingBeatmap beatmap, Ruleset ruleset)
+        protected virtual Player CreatePlayer(WorkingBeatmap beatmap, Ruleset ruleset) => new Player
         {
-            return new Player
-            {
-                InitialBeatmap = beatmap
-            };
-        }
+            InitialBeatmap = beatmap,
+            AllowPause = false
+        };
 
         private const string test_beatmap_data =
-@"osu file format v14
+            @"osu file format v14
 
 [General]
 AudioLeadIn: 500

osu.Game/osu.Game.csproj

@@ -784,6 +784,7 @@
     <Compile Include="Tests\Beatmaps\TestWorkingBeatmap.cs" />
     <Compile Include="Tests\Platform\TestStorage.cs" />
     <Compile Include="Tests\Visual\OsuTestCase.cs" />
+    <Compile Include="Tests\Visual\ScreenTestCase.cs" />
     <Compile Include="Tests\Visual\TestCasePlayer.cs" />
     <Compile Include="Users\Avatar.cs" />
     <Compile Include="Users\Country.cs" />