diff --git a/src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common/TestBase.cs b/src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common/TestBase.cs
index 5171f903455..a88a67a5840 100644
--- a/src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common/TestBase.cs
+++ b/src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common/TestBase.cs
@@ -90,6 +90,8 @@ protected TestBase(ITestOutputHelper testOutput)
 
         // Give this thread a name, so it's easier to find in the VS Threads window.
         Thread.CurrentThread.Name ??= "Main Thread";
+
+        ThrowingTraceListener.AddToListeners();
     }
 
     Task IAsyncLifetime.InitializeAsync() => InitializeAsync();
diff --git a/src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common/ThrowingTraceListener.cs b/src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common/ThrowingTraceListener.cs
new file mode 100644
index 00000000000..2096fa6ba44
--- /dev/null
+++ b/src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common/ThrowingTraceListener.cs
@@ -0,0 +1,88 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT license. See License.txt in the project root for license information.
+
+using System;
+using System.Diagnostics;
+
+namespace Microsoft.AspNetCore.Razor.Test.Common;
+
+public sealed class ThrowingTraceListener : TraceListener
+{
+    private static bool s_throwingTraceListenerAdded;
+    private static readonly object s_gate = new();
+
+    public static void AddToListeners()
+    {
+        lock (s_gate)
+        {
+            if (s_throwingTraceListenerAdded)
+            {
+                return;
+            }
+
+            var sawThrowingTraceListener = false;
+            var listeners = Trace.Listeners;
+            for (var i = listeners.Count - 1; i >= 0; i--)
+            {
+                switch (listeners[i])
+                {
+                    case DefaultTraceListener listener:
+                        // Don't show assert UI during test runs
+                        listener.AssertUiEnabled = false;
+                        break;
+                    case ThrowingTraceListener:
+                        sawThrowingTraceListener = true;
+                        break;
+                }
+            }
+
+            if (!sawThrowingTraceListener)
+            {
+                // Add an instance of the ThrowingTraceListener so that Debug.Assert and Debug.Fail
+                // throw exceptions during test runs.
+                listeners.Add(new ThrowingTraceListener());
+            }
+
+            s_throwingTraceListenerAdded = true;
+        }
+    }
+
+    public override void Fail(string? message, string? detailMessage)
+    {
+        throw new InvalidOperationException(
+            (string.IsNullOrEmpty(message) ? "Assertion failed" : message) +
+            (string.IsNullOrEmpty(detailMessage) ? "" : Environment.NewLine + detailMessage));
+    }
+
+    public override void Write(object? o)
+    {
+    }
+
+    public override void Write(object? o, string? category)
+    {
+    }
+
+    public override void Write(string? message)
+    {
+    }
+
+    public override void Write(string? message, string? category)
+    {
+    }
+
+    public override void WriteLine(object? o)
+    {
+    }
+
+    public override void WriteLine(object? o, string? category)
+    {
+    }
+
+    public override void WriteLine(string? message)
+    {
+    }
+
+    public override void WriteLine(string? message, string? category)
+    {
+    }
+}
diff --git a/src/Razor/test/Microsoft.VisualStudio.Razor.IntegrationTests/AbstractIntegrationTest.cs b/src/Razor/test/Microsoft.VisualStudio.Razor.IntegrationTests/AbstractIntegrationTest.cs
index c187f971ec0..420a1447450 100644
--- a/src/Razor/test/Microsoft.VisualStudio.Razor.IntegrationTests/AbstractIntegrationTest.cs
+++ b/src/Razor/test/Microsoft.VisualStudio.Razor.IntegrationTests/AbstractIntegrationTest.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Threading;
+using Microsoft.AspNetCore.Razor.Test.Common;
 using Microsoft.VisualStudio.Extensibility.Testing;
 using Xunit;
 using Xunit.Sdk;
@@ -38,6 +39,8 @@ public abstract class AbstractIntegrationTest : AbstractIdeIntegrationTest
 
     public override async Task InitializeAsync()
     {
+        ThrowingTraceListener.AddToListeners();
+
         await base.InitializeAsync();
     }
 }