Add a TestCase for looong combos

osu.Game.Rulesets.Osu.Tests/TestCaseHitCircleLongCombo.cs

@@ -0,0 +1,36 @@
+// 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.Game.Beatmaps;
+using osu.Game.Rulesets.Osu.Objects;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    [TestFixture]
+    public class TestCaseHitCircleLongCombo : Game.Tests.Visual.TestCasePlayer
+    {
+        public TestCaseHitCircleLongCombo()
+            : base(new OsuRuleset())
+        {
+        }
+
+        protected override IBeatmap CreateBeatmap(Ruleset ruleset)
+        {
+            var beatmap = new Beatmap
+            {
+                BeatmapInfo = new BeatmapInfo
+                {
+                    BaseDifficulty = new BeatmapDifficulty { CircleSize = 6 },
+                    Ruleset = ruleset.RulesetInfo
+                }
+            };
+
+            for (int i = 0; i < 512; i++)
+                beatmap.HitObjects.Add(new HitCircle { Position = new Vector2(256, 192), StartTime = i * 100 });
+
+            return beatmap;
+        }
+    }
+}