Added test for Ouendan 2 style Hidden mod

osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModHidden.cs

@@ -117,6 +117,42 @@ public void TestWithSliderReuse() => CreateModTest(new ModTestData
             PassCondition = checkSomeHit
         });
 
+        [Test]
+        public void OuendanTwoHidden() => CreateModTest(new ModTestData
+        {
+            Mod = new OsuModHidden { NoHitCircles = { Value = true } },
+            Autoplay = true,
+            Beatmap = new Beatmap
+            {
+                HitObjects = new List<HitObject>
+                {
+                    new HitCircle
+                    {
+                        StartTime = 1000,
+                        Position = new Vector2(206,142)
+                    },
+                    new HitCircle
+                    {
+                        StartTime = 2000,
+                        Position = new Vector2(306,142)
+                    },
+                    new Slider
+                    {
+                        StartTime = 3000,
+                        Position = new Vector2(156,242),
+                        Path = new SliderPath(PathType.Linear, new[] { Vector2.Zero, new Vector2(200,0), })
+                    },
+                    new Spinner
+                    {
+                        Position = new Vector2(256,192),
+                        StartTime = 7000,
+                        EndTime = 9000
+                    }
+                }
+            },
+            PassCondition = checkSomeHit
+        });
+
         private bool checkSomeHit() => Player.ScoreProcessor.JudgedHits >= 4;
 
         private bool objectWithIncreasedVisibilityHasIndex(int index)