From cdd41d2a1eafd0996359a6eb7693398628df059c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20Jare=C5=A1?= <me@jakubjares.com>
Date: Mon, 7 Jul 2025 10:20:41 +0200
Subject: [PATCH 1/2] dump-logs?

---
 .../CustomTestHostTests.cs                    | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/test/Microsoft.TestPlatform.Acceptance.IntegrationTests/TranslationLayerTests/CustomTestHostTests.cs b/test/Microsoft.TestPlatform.Acceptance.IntegrationTests/TranslationLayerTests/CustomTestHostTests.cs
index 9996f086e0..3c5ed936ac 100644
--- a/test/Microsoft.TestPlatform.Acceptance.IntegrationTests/TranslationLayerTests/CustomTestHostTests.cs
+++ b/test/Microsoft.TestPlatform.Acceptance.IntegrationTests/TranslationLayerTests/CustomTestHostTests.cs
@@ -1,9 +1,13 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Globalization;
+using System.IO;
 using System.Linq;
+using System.Text;
 using System.Threading;
 
 using FluentAssertions;
@@ -158,6 +162,27 @@ public void RunAllTestsWithMixedTFMsWillProvideAdditionalInformationToTheDebugge
         vstestConsoleWrapper.RunTestsWithCustomTestHost(new[] { netFrameworkDll, netDll }, runsettingsXml, runEventHandler, testHostLauncher);
 
         // Assert
+        if (runEventHandler.Errors.Any())
+        {
+            var tempPath = TempDirectory.Path;
+            var files = System.IO.Directory.GetFiles(tempPath, "*.txt").ToList();
+            if (files.Count == 0)
+            {
+                throw new InvalidOperationException($"No error files found in {tempPath}. {string.Join("\n", Directory.GetFiles(tempPath))}");
+            }
+
+            var allText = new StringBuilder();
+            foreach (var file in files)
+            {
+#pragma warning disable CA1305 // Specify IFormatProvider
+                allText.AppendLine($"Error file: {file}");
+                allText.AppendLine(File.ReadAllText(file));
+                allText.AppendLine();
+#pragma warning restore CA1305 // Specify IFormatProvider
+            }
+            throw new InvalidOperationException($"Logs: {allText}");
+        }
+
         runEventHandler.Errors.Should().BeEmpty();
         testHostLauncher.AttachDebuggerInfos.Should().HaveCount(2);
         var targetFrameworks = testHostLauncher.AttachDebuggerInfos.Select(i => i.TargetFramework).ToList();

From fbdaed6e40bebb6051d2d85b6da58e59921620ab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20Jare=C5=A1?= <me@jakubjares.com>
Date: Mon, 7 Jul 2025 11:15:49 +0200
Subject: [PATCH 2/2] using

---
 .../TranslationLayerTests/CustomTestHostTests.cs                 | 1 -
 1 file changed, 1 deletion(-)

diff --git a/test/Microsoft.TestPlatform.Acceptance.IntegrationTests/TranslationLayerTests/CustomTestHostTests.cs b/test/Microsoft.TestPlatform.Acceptance.IntegrationTests/TranslationLayerTests/CustomTestHostTests.cs
index 3c5ed936ac..b1d399e20a 100644
--- a/test/Microsoft.TestPlatform.Acceptance.IntegrationTests/TranslationLayerTests/CustomTestHostTests.cs
+++ b/test/Microsoft.TestPlatform.Acceptance.IntegrationTests/TranslationLayerTests/CustomTestHostTests.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Text;