Fix stable.json file directory location due to the change of how TournamentStorage works

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

@@ -0,0 +1,68 @@
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using osu.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Platform;
+using osu.Game.Tournament.IO;
+using osu.Game.Tournament.IPC;
+
+namespace osu.Game.Tournament.Tests.NonVisual
+{
+    [TestFixture]
+    public class IPCLocationTest
+    {
+        [Test]
+        public void CheckIPCLocation()
+        {
+            // don't use clean run because files are being written before osu! launches.
+            using (HeadlessGameHost host = new HeadlessGameHost(nameof(CheckIPCLocation)))
+            {
+                string basePath = Path.Combine(RuntimeInfo.StartupDirectory, "headless", nameof(CheckIPCLocation));
+
+                // Set up a fake IPC client for the IPC Storage to switch to.
+                string testCeDir = Path.Combine(basePath, "stable-ce");
+                Directory.CreateDirectory(testCeDir);
+
+                string ipcFile = Path.Combine(testCeDir, "ipc.txt");
+                File.WriteAllText(ipcFile, string.Empty);
+
+                try
+                {
+                    var osu = loadOsu(host);
+                    TournamentStorage storage = (TournamentStorage)osu.Dependencies.Get<Storage>();
+                    FileBasedIPC ipc = (FileBasedIPC)osu.Dependencies.Get<MatchIPCInfo>();
+
+                    Assert.True(ipc.SetIPCLocation(testCeDir));
+                    Assert.True(storage.AllTournaments.Exists("stable.json"));
+                }
+                finally
+                {
+                    host.Storage.DeleteDirectory(testCeDir);
+                    host.Storage.DeleteDirectory("tournaments");
+                    host.Exit();
+                }
+            }
+        }
+
+        private TournamentGameBase loadOsu(GameHost host)
+        {
+            var osu = new TournamentGameBase();
+            Task.Run(() => host.Run(osu));
+            waitForOrAssert(() => osu.IsLoaded, @"osu! failed to start in a reasonable amount of time");
+            return osu;
+        }
+
+        private static void waitForOrAssert(Func<bool> result, string failureMessage, int timeout = 90000)
+        {
+            Task task = Task.Run(() =>
+            {
+                while (!result()) Thread.Sleep(200);
+            });
+
+            Assert.IsTrue(task.Wait(timeout), failureMessage);
+        }
+    }
+}