1 files changed, 34 insertions, 0 deletions

diff --git a/src/test/burn/WixTestTools/RuntimeFactAttribute.cs b/src/test/burn/WixTestTools/RuntimeFactAttribute.cs
new file mode 100644
index 00000000..fcd19b95
--- /dev/null
+++ b/src/test/burn/WixTestTools/RuntimeFactAttribute.cs
@@ -0,0 +1,34 @@
+// 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 WixTestTools
+{
+    using System;
+    using System.Security.Principal;
+    using WixBuildTools.TestSupport.XunitExtensions;
+
+    public class RuntimeFactAttribute : SkippableFactAttribute
+    {
+        const string RequiredEnvironmentVariableName = "RuntimeTestsEnabled";
+
+        public static bool RuntimeTestsEnabled { get; }
+        public static bool RunningAsAdministrator { get; }
+
+        static RuntimeFactAttribute()
+        {
+            using var identity = WindowsIdentity.GetCurrent();
+            var principal = new WindowsPrincipal(identity);
+            RunningAsAdministrator = principal.IsInRole(WindowsBuiltInRole.Administrator);
+
+            var testsEnabledString = Environment.GetEnvironmentVariable(RequiredEnvironmentVariableName);
+            RuntimeTestsEnabled = Boolean.TryParse(testsEnabledString, out var testsEnabled) && testsEnabled;
+        }
+
+        public RuntimeFactAttribute()
+        {
+            if (!RuntimeTestsEnabled || !RunningAsAdministrator)
+            {
+                this.Skip = $"These tests must run elevated ({(RunningAsAdministrator ? "passed" : "failed")}). These tests affect machine state. To accept the consequences, set the {RequiredEnvironmentVariableName} environment variable to true ({(RuntimeTestsEnabled ? "passed" : "failed")}).";
+            }
+        }
+    }
+}