From bf10f2db2ed2148ba47e6652c467e4c341a6d654 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Thu, 7 Jul 2022 18:19:01 +0900
Subject: [PATCH] Add test coverage of nested rollback for good measure

---
 osu.Game.Tests/Database/RealmLiveTests.cs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/osu.Game.Tests/Database/RealmLiveTests.cs b/osu.Game.Tests/Database/RealmLiveTests.cs
index aec8c0b1e1..3615cebe6a 100644
--- a/osu.Game.Tests/Database/RealmLiveTests.cs
+++ b/osu.Game.Tests/Database/RealmLiveTests.cs
@@ -77,6 +77,27 @@ namespace osu.Game.Tests.Database
             });
         }
 
+        [Test]
+        public void TestFailedNestedWritePerformsRollback()
+        {
+            RunTestWithRealm((realm, _) =>
+            {
+                Assert.Throws<InvalidOperationException>(() =>
+                {
+                    realm.Write(r =>
+                    {
+                        realm.Write(_ =>
+                        {
+                            r.Add(new BeatmapInfo(CreateRuleset(), new BeatmapDifficulty(), new BeatmapMetadata()));
+                            throw new InvalidOperationException();
+                        });
+                    });
+                });
+
+                Assert.That(realm.Run(r => r.All<BeatmapInfo>()), Is.Empty);
+            });
+        }
+
         [Test]
         public void TestNestedWriteCalls()
         {