Implement CommentsHeader component

osu.Game.Tests/Visual/Online/TestSceneCommentsHeader.cs

@@ -0,0 +1,39 @@
+// 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 System;
+using System.Collections.Generic;
+using NUnit.Framework;
+using osu.Framework.Bindables;
+using osu.Game.Overlays.Comments;
+
+namespace osu.Game.Tests.Visual.Online
+{
+    [TestFixture]
+    public class TestSceneCommentsHeader : OsuTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(CommentsHeader),
+            typeof(HeaderButton),
+            typeof(SortSelector),
+        };
+
+        private readonly Bindable<SortCommentsBy> sort = new Bindable<SortCommentsBy>();
+        private readonly BindableBool showDeleted = new BindableBool();
+
+        public TestSceneCommentsHeader()
+        {
+            Add(new CommentsHeader
+            {
+                Sort = { BindTarget = sort },
+                ShowDeleted = { BindTarget = showDeleted }
+            });
+
+            AddStep("Trigger ShowDeleted", () => showDeleted.Value = !showDeleted.Value);
+            AddStep("Select old", () => sort.Value = SortCommentsBy.Old);
+            AddStep("Select new", () => sort.Value = SortCommentsBy.New);
+            AddStep("Select top", () => sort.Value = SortCommentsBy.Top);
+        }
+    }
+}