Rename test cases to test scenes inline with the framework change

osu.Game/Tests/Visual/ScreenTestScene.cs

@@ -0,0 +1,37 @@
+// 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.Graphics;
+using osu.Framework.Graphics.Containers;
+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 ScreenTestScene : ManualInputManagerTestScene
+    {
+        private readonly OsuScreenStack stack;
+
+        private readonly Container content;
+
+        protected override Container<Drawable> Content => content;
+
+        protected ScreenTestScene()
+        {
+            base.Content.AddRange(new Drawable[]
+            {
+                stack = new OsuScreenStack { RelativeSizeAxes = Axes.Both },
+                content = new Container { RelativeSizeAxes = Axes.Both }
+            });
+        }
+
+        protected void LoadScreen(OsuScreen screen)
+        {
+            if (stack.CurrentScreen != null)
+                stack.Exit();
+            stack.Push(screen);
+        }
+    }
+}