Add mania skinnable test helpers

osu.Game.Rulesets.Mania.Tests/Skinning/ColumnTestContainer.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 osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Mania.UI;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.Tests.Skinning
+{
+    /// <summary>
+    /// A container to be used in a <see cref="ManiaSkinnableTestScene"/> to provide a resolvable <see cref="Column"/> dependency.
+    /// </summary>
+    public class ColumnTestContainer : Container
+    {
+        protected override Container<Drawable> Content => content;
+
+        private readonly Container content;
+
+        [Cached]
+        private readonly Column column;
+
+        public ColumnTestContainer(int column, ManiaAction action)
+        {
+            this.column = new Column(column)
+            {
+                Action = { Value = action },
+                AccentColour = Color4.Orange
+            };
+
+            InternalChild = content = new ManiaInputManager(new ManiaRuleset().RulesetInfo, 4)
+            {
+                RelativeSizeAxes = Axes.Both
+            };
+        }
+    }
+}

osu.Game.Rulesets.Mania.Tests/Skinning/ManiaHitObjectTestScene.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 osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Timing;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.UI.Scrolling;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.Tests.Skinning
+{
+    /// <summary>
+    /// A test scene for a mania hitobject.
+    /// </summary>
+    public abstract class ManiaHitObjectTestScene : ManiaSkinnableTestScene
+    {
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            SetContents(() => new FillFlowContainer
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                RelativeSizeAxes = Axes.Both,
+                Height = 0.7f,
+                Direction = FillDirection.Horizontal,
+                Children = new Drawable[]
+                {
+                    new ColumnTestContainer(0, ManiaAction.Key1)
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        RelativeSizeAxes = Axes.Y,
+                        Width = 80,
+                        Child = new ScrollingHitObjectContainer
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Clock = new FramedClock(new StopwatchClock()),
+                        }.With(c =>
+                        {
+                            c.Add(CreateHitObject().With(h => h.AccentColour.Value = Color4.Orange));
+                        })
+                    },
+                    new ColumnTestContainer(1, ManiaAction.Key2)
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                        RelativeSizeAxes = Axes.Y,
+                        Width = 80,
+                        Child = new ScrollingHitObjectContainer
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Clock = new FramedClock(new StopwatchClock()),
+                        }.With(c =>
+                        {
+                            c.Add(CreateHitObject().With(h => h.AccentColour.Value = Color4.Orange));
+                        })
+                    },
+                }
+            });
+        }
+
+        protected abstract DrawableManiaHitObject CreateHitObject();
+    }
+}

osu.Game.Rulesets.Mania.Tests/Skinning/ManiaSkinnableTestScene.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.Framework.Bindables;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Rulesets.UI.Scrolling.Algorithms;
+using osu.Game.Tests.Visual;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.Tests.Skinning
+{
+    /// <summary>
+    /// A test scene for skinnable mania components.
+    /// </summary>
+    public abstract class ManiaSkinnableTestScene : SkinnableTestScene
+    {
+        [Cached(Type = typeof(IScrollingInfo))]
+        private readonly TestScrollingInfo scrollingInfo = new TestScrollingInfo();
+
+        protected ManiaSkinnableTestScene()
+        {
+            scrollingInfo.Direction.Value = ScrollingDirection.Down;
+
+            Add(new Box
+            {
+                RelativeSizeAxes = Axes.Both,
+                Colour = Color4.SlateGray.Opacity(0.2f),
+                Depth = 1
+            });
+        }
+
+        [Test]
+        public void TestScrollingDown()
+        {
+            AddStep("change direction to down", () => scrollingInfo.Direction.Value = ScrollingDirection.Down);
+        }
+
+        [Test]
+        public void TestScrollingUp()
+        {
+            AddStep("change direction to up", () => scrollingInfo.Direction.Value = ScrollingDirection.Up);
+        }
+
+        private class TestScrollingInfo : IScrollingInfo
+        {
+            public readonly Bindable<ScrollingDirection> Direction = new Bindable<ScrollingDirection>();
+
+            IBindable<ScrollingDirection> IScrollingInfo.Direction => Direction;
+            IBindable<double> IScrollingInfo.TimeRange { get; } = new Bindable<double>(1000);
+            IScrollAlgorithm IScrollingInfo.Algorithm { get; } = new ConstantScrollAlgorithm();
+        }
+    }
+}