From 1262e76a584c4b1e748f9309ad1efcfaf6e8ee55 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Fri, 31 Dec 2021 23:18:03 +0900
Subject: [PATCH] Fix test failure due to missing DI cached `IdleTracker`

---
 osu.Game/Online/Chat/ChannelManager.cs | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/osu.Game/Online/Chat/ChannelManager.cs b/osu.Game/Online/Chat/ChannelManager.cs
index 4889ad0a3b..e9e145e2ab 100644
--- a/osu.Game/Online/Chat/ChannelManager.cs
+++ b/osu.Game/Online/Chat/ChannelManager.cs
@@ -68,20 +68,21 @@ namespace osu.Game.Online.Chat
 
         public readonly BindableBool HighPollRate = new BindableBool();
 
-        private IBindable<bool> isIdle;
+        private readonly IBindable<bool> isIdle = new BindableBool();
 
         public ChannelManager()
         {
             CurrentChannel.ValueChanged += currentChannelChanged;
         }
 
-        [BackgroundDependencyLoader]
+        [BackgroundDependencyLoader(permitNulls: true)]
         private void load(IdleTracker idleTracker)
         {
             HighPollRate.BindValueChanged(updatePollRate);
-
-            isIdle = idleTracker.IsIdle.GetBoundCopy();
             isIdle.BindValueChanged(updatePollRate, true);
+
+            if (idleTracker != null)
+                isIdle.BindTo(idleTracker.IsIdle);
         }
 
         private void updatePollRate(ValueChangedEvent<bool> valueChangedEvent)