From 97da47f69ca90fe35dad7914b04e97c7363e7df4 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Tue, 30 Apr 2024 01:27:45 +0800
Subject: [PATCH] Add test coverage of reading japanese filename after
 exporting

---
 .../Skins/TestSceneBeatmapSkinResources.cs    | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/osu.Game.Tests/Skins/TestSceneBeatmapSkinResources.cs b/osu.Game.Tests/Skins/TestSceneBeatmapSkinResources.cs
index b566e892cd..e0922c52f7 100644
--- a/osu.Game.Tests/Skins/TestSceneBeatmapSkinResources.cs
+++ b/osu.Game.Tests/Skins/TestSceneBeatmapSkinResources.cs
@@ -1,6 +1,7 @@
 // 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.IO;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio.Track;
@@ -12,6 +13,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Database;
 using osu.Game.Tests.Resources;
 using osu.Game.Tests.Visual;
+using MemoryStream = System.IO.MemoryStream;
 
 namespace osu.Game.Tests.Skins
 {
@@ -25,9 +27,23 @@ namespace osu.Game.Tests.Skins
         public void TestRetrieveJapaneseFilename()
         {
             IWorkingBeatmap beatmap = null!;
+            MemoryStream outStream = null!;
 
+            // Ensure importer encoding is correct
             AddStep("import beatmap", () => beatmap = importBeatmapFromArchives(@"japanese-filename.osz"));
             AddAssert("sample is non-null", () => beatmap.Skin.GetSample(new SampleInfo(@"見本")) != null);
+
+            // Ensure exporter encoding is correct (round trip)
+            AddStep("export", () =>
+            {
+                outStream = new MemoryStream();
+
+                new LegacyBeatmapExporter(LocalStorage)
+                    .ExportToStream((BeatmapSetInfo)beatmap.BeatmapInfo.BeatmapSet!, outStream, null);
+            });
+
+            AddStep("import beatmap again", () => beatmap = importBeatmapFromStream(outStream));
+            AddAssert("sample is non-null", () => beatmap.Skin.GetSample(new SampleInfo(@"見本")) != null);
         }
 
         [Test]
@@ -54,6 +70,12 @@ namespace osu.Game.Tests.Skins
             AddAssert("sample is non-null", () => beatmap.Skin.GetSample(new SampleInfo(@"spinner-osu")) != null);
         }
 
+        private IWorkingBeatmap importBeatmapFromStream(Stream stream)
+        {
+            var imported = beatmaps.Import(new ImportTask(stream, "filename.osz")).GetResultSafely();
+            return imported.AsNonNull().PerformRead(s => beatmaps.GetWorkingBeatmap(s.Beatmaps[0]));
+        }
+
         private IWorkingBeatmap importBeatmapFromArchives(string filename)
         {
             var imported = beatmaps.Import(new ImportTask(TestResources.OpenResource($@"Archives/{filename}"), filename)).GetResultSafely();