Implement popup screen title component

osu.Game.Tests/Visual/UserInterface/TestScenePopupScreenTitle.cs

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+// 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 NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Overlays;
+
+namespace osu.Game.Tests.Visual.UserInterface
+{
+    [TestFixture]
+    public class TestScenePopupScreenTitle : OsuTestScene
+    {
+        [Cached]
+        private OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Green);
+
+        [Test]
+        public void TestPopupScreenTitle()
+        {
+            AddStep("create content", () =>
+            {
+                Child = new PopupScreenTitle
+                {
+                    Title = "Popup Screen Title",
+                    Description = "This is a description.",
+                    Close = () => { }
+                };
+            });
+        }
+
+        [Test]
+        public void TestDisabledExit()
+        {
+            AddStep("create content", () =>
+            {
+                Child = new PopupScreenTitle
+                {
+                    Title = "Popup Screen Title",
+                    Description = "This is a description."
+                };
+            });
+        }
+    }
+}