From b6b5f338a51a542d072b9f4ce6a9165ddffc782c Mon Sep 17 00:00:00 2001
From: Youssef1313 <youssefvictor00@gmail.com>
Date: Tue, 9 Sep 2025 17:43:12 +0200
Subject: [PATCH] FailFast in UnknownMessageSerializer.Serialize

---
 .../Test/MTP/IPC/Serializers/UnknownMessageSerializer.cs      | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/Cli/dotnet/Commands/Test/MTP/IPC/Serializers/UnknownMessageSerializer.cs b/src/Cli/dotnet/Commands/Test/MTP/IPC/Serializers/UnknownMessageSerializer.cs
index 3ebc6f1802be..f1e3331f333b 100644
--- a/src/Cli/dotnet/Commands/Test/MTP/IPC/Serializers/UnknownMessageSerializer.cs
+++ b/src/Cli/dotnet/Commands/Test/MTP/IPC/Serializers/UnknownMessageSerializer.cs
@@ -17,7 +17,5 @@ public object Deserialize(Stream _)
     }
 
     public void Serialize(object _, Stream stream)
-    {
-        WriteInt(stream, Id);
-    }
+        => Environment.FailFast("SDK never serializes UnknownMessage. This should never be hit.");
 }