Split out test for combo counter specifically

osu.Game.Tests/Visual/Gameplay/TestSceneComboCounter.cs

@@ -0,0 +1,47 @@
+// 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.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Testing;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Screens.Play.HUD;
+
+namespace osu.Game.Tests.Visual.Gameplay
+{
+    public class TestSceneComboCounter : SkinnableTestScene
+    {
+        private IEnumerable<SkinnableComboCounter> comboCounters => CreatedDrawables.OfType<SkinnableComboCounter>();
+
+        protected override Ruleset CreateRulesetForSkinProvider() => new OsuRuleset();
+
+        [SetUpSteps]
+        public void SetUpSteps()
+        {
+            AddStep("Create combo counters", () => SetContents(() =>
+            {
+                var comboCounter = new SkinnableComboCounter();
+                comboCounter.Current.Value = 1;
+                return comboCounter;
+            }));
+        }
+
+        [Test]
+        public void TestComboCounterIncrementing()
+        {
+            AddRepeatStep("increase combo", () =>
+            {
+                foreach (var counter in comboCounters)
+                    counter.Current.Value++;
+            }, 10);
+
+            AddStep("reset combo", () =>
+            {
+                foreach (var counter in comboCounters)
+                    counter.Current.Value = 0;
+            });
+        }
+    }
+}