2 files changed, 27 insertions, 0 deletions

diff --git a/src/internal/WixBuildTools.TestSupport/XunitExtensions/SpecificReturnCodeException.cs b/src/internal/WixBuildTools.TestSupport/XunitExtensions/SpecificReturnCodeException.cs
new file mode 100644
index 00000000..c66890f8
--- /dev/null
+++ b/src/internal/WixBuildTools.TestSupport/XunitExtensions/SpecificReturnCodeException.cs
@@ -0,0 +1,19 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixBuildTools.TestSupport
+{
+    using System;
+    using Xunit.Sdk;
+
+    public class SpecificReturnCodeException : XunitException
+    {
+        public SpecificReturnCodeException(int hr, string userMessage)
+            : base(String.Format("WixAssert.SpecificReturnCode() Failure\r\n" +
+                                 "HRESULT:  0x{0:X8}\r\n" +
+                                 "Message:  {1}",
+                                 hr, userMessage))
+        {
+            this.HResult = hr;
+        }
+    }
+}
diff --git a/src/internal/WixBuildTools.TestSupport/XunitExtensions/WixAssert.cs b/src/internal/WixBuildTools.TestSupport/XunitExtensions/WixAssert.cs
index 10156547..1ede55b3 100644
--- a/src/internal/WixBuildTools.TestSupport/XunitExtensions/WixAssert.cs
+++ b/src/internal/WixBuildTools.TestSupport/XunitExtensions/WixAssert.cs
@@ -52,6 +52,14 @@ namespace WixBuildTools.TestSupport
             throw new SkipTestException(message);
         }
 
+        public static void SpecificReturnCode(int hrExpected, int hr, string format, params object[] formatArgs)
+        {
+            if (hrExpected != hr)
+            {
+                throw new SpecificReturnCodeException(hr, String.Format(format, formatArgs));
+            }
+        }
+
         public static void Succeeded(int hr, string format, params object[] formatArgs)
         {
             if (0 > hr)