Add failing test coverage of loading with an unavailable ruleset

osu.Game.Tournament.Tests/NonVisual/DataLoadTest.cs

@@ -0,0 +1,45 @@
+// 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.Platform;
+using osu.Game.Rulesets;
+using osu.Game.Tests;
+
+namespace osu.Game.Tournament.Tests.NonVisual
+{
+    public class DataLoadTest : TournamentHostTest
+    {
+        [Test]
+        public void TestUnavailableRuleset()
+        {
+            using (HeadlessGameHost host = new CleanRunHeadlessGameHost(nameof(TestUnavailableRuleset)))
+            {
+                try
+                {
+                    var osu = new TestTournament();
+
+                    LoadTournament(host, osu);
+                    var storage = osu.Dependencies.Get<Storage>();
+
+                    Assert.That(storage.GetFullPath("."), Is.EqualTo(Path.Combine(host.Storage.GetFullPath("."), "tournaments", "default")));
+                }
+                finally
+                {
+                    host.Exit();
+                }
+            }
+        }
+
+        public class TestTournament : TournamentGameBase
+        {
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                Ruleset.Value = new RulesetInfo(); // not available
+            }
+        }
+    }
+}