From 2a01e3d148ea69f86e955e5aac771d1cf23d5aec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bart=C5=82omiej=20Dach?= <dach.bartlomiej@gmail.com>
Date: Thu, 30 Oct 2025 14:54:07 +0100
Subject: [PATCH] Add failing test case

---
 .../TestSceneBeatmapCarouselArtistGrouping.cs | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/osu.Game.Tests/Visual/SongSelectV2/TestSceneBeatmapCarouselArtistGrouping.cs b/osu.Game.Tests/Visual/SongSelectV2/TestSceneBeatmapCarouselArtistGrouping.cs
index 2c3013af12..2390261cdb 100644
--- a/osu.Game.Tests/Visual/SongSelectV2/TestSceneBeatmapCarouselArtistGrouping.cs
+++ b/osu.Game.Tests/Visual/SongSelectV2/TestSceneBeatmapCarouselArtistGrouping.cs
@@ -4,9 +4,12 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Database;
 using osu.Game.Graphics.Carousel;
 using osu.Game.Screens.Select.Filter;
 using osu.Game.Screens.SelectV2;
+using osu.Game.Tests.Resources;
 using osuTK;
 
 namespace osu.Game.Tests.Visual.SongSelectV2
@@ -322,5 +325,38 @@ namespace osu.Game.Tests.Visual.SongSelectV2
             SelectNextSet();
             AddUntilStep("no beatmap panels visible", () => GetVisiblePanels<PanelBeatmap>().Count(), () => Is.Zero);
         }
+
+        [Test]
+        public void TestGroupChangedAfterEngagingArtistGrouping()
+        {
+            RemoveAllBeatmaps();
+            AddStep("add test beatmaps", () =>
+            {
+                for (int i = 0; i < 5; ++i)
+                {
+                    var baseTestBeatmap = TestResources.CreateTestBeatmapSetInfo(3);
+
+                    var metadata = new BeatmapMetadata
+                    {
+                        Artist = $"{(char)('A' + i)} artist",
+                        Title = $"{(char)('A' + 4 - i)} title",
+                    };
+
+                    foreach (var b in baseTestBeatmap.Beatmaps)
+                        b.Metadata = metadata;
+
+                    Realm.Write(r => r.Add(baseTestBeatmap, update: true));
+                    BeatmapSets.Add(baseTestBeatmap.Detach());
+                }
+
+                SortAndGroupBy(SortMode.Title, GroupMode.Title);
+                SelectNextSet();
+                SelectNextSet();
+                WaitForExpandedGroup(1);
+
+                SortAndGroupBy(SortMode.Artist, GroupMode.Artist);
+                WaitForExpandedGroup(3);
+            });
+        }
     }
 }