RealtimeMultiplayer -> Multiplayer

osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayer.cs

@@ -0,0 +1,47 @@
+// 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 NUnit.Framework;
+using osu.Game.Screens.Multi.Components;
+using osu.Game.Users;
+
+namespace osu.Game.Tests.Visual.Multiplayer
+{
+    public class TestSceneMultiplayer : MultiplayerTestScene
+    {
+        public TestSceneMultiplayer()
+        {
+            var multi = new TestMultiplayer();
+
+            AddStep("show", () => LoadScreen(multi));
+            AddUntilStep("wait for loaded", () => multi.IsLoaded);
+        }
+
+        [Test]
+        public void TestOneUserJoinedMultipleTimes()
+        {
+            var user = new User { Id = 33 };
+
+            AddRepeatStep("add user multiple times", () => Client.AddUser(user), 3);
+
+            AddAssert("room has 2 users", () => Client.Room?.Users.Count == 2);
+        }
+
+        [Test]
+        public void TestOneUserLeftMultipleTimes()
+        {
+            var user = new User { Id = 44 };
+
+            AddStep("add user", () => Client.AddUser(user));
+            AddAssert("room has 2 users", () => Client.Room?.Users.Count == 2);
+
+            AddRepeatStep("remove user multiple times", () => Client.RemoveUser(user), 3);
+            AddAssert("room has 1 user", () => Client.Room?.Users.Count == 1);
+        }
+
+        private class TestMultiplayer : Screens.Multi.Multiplayer.Multiplayer
+        {
+            protected override RoomManager CreateRoomManager() => new TestMultiplayerRoomManager();
+        }
+    }
+}