Install a TraceListener for integration testing

Fixes #33599

src/VisualStudio/IntegrationTest/TestSetup/IntegrationTestServiceCommands.cs

@@ -84,6 +84,8 @@ private void StartServiceCallback(object sender, EventArgs e)
         {
             if (_startMenuCmd.Enabled)
             {
+                IntegrationTestTraceListener.Install();
+
                 _service = new IntegrationService();
 
                 _serviceChannel = new IpcServerChannel(

src/VisualStudio/IntegrationTest/TestSetup/IntegrationTestServicePackage.cs

@@ -20,6 +20,7 @@ protected override async Task InitializeAsync(CancellationToken cancellationToke
         {
             await base.InitializeAsync(cancellationToken, progress).ConfigureAwait(true);
             await JoinableTaskFactory.SwitchToMainThreadAsync(cancellationToken);
+            cancellationToken.ThrowIfCancellationRequested();
 
             IntegrationTestServiceCommands.Initialize(this);
         }

src/VisualStudio/IntegrationTest/TestSetup/IntegrationTestTraceListener.cs

+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+
+using System;
+using System.Diagnostics;
+using Microsoft.CodeAnalysis.ErrorReporting;
+
+namespace Microsoft.VisualStudio.IntegrationTest.Setup
+{
+    internal class IntegrationTestTraceListener : TraceListener
+    {
+        public override void Write(string message)
+        {
+            Exit(message);
+        }
+
+        public override void WriteLine(string message)
+        {
+            Exit(message);
+        }
+
+        private static void Exit(string message)
+        {
+            FatalError.Report(new Exception(message));
+        }
+
+        internal static void Install()
+        {
+            Trace.Listeners.Clear();
+            Trace.Listeners.Add(new IntegrationTestTraceListener());
+        }
+    }
+}