1 files changed, 35 insertions, 0 deletions

diff --git a/src/libs/dutil/test/DUtilUnitTest/DUtilTests.cpp b/src/libs/dutil/test/DUtilUnitTest/DUtilTests.cpp
new file mode 100644
index 00000000..55e81d46
--- /dev/null
+++ b/src/libs/dutil/test/DUtilUnitTest/DUtilTests.cpp
@@ -0,0 +1,35 @@
+// 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.
+
+#include "precomp.h"
+
+using namespace System;
+using namespace Xunit;
+using namespace WixBuildTools::TestSupport;
+
+namespace DutilTests
+{
+    public ref class DUtil
+    {
+    public:
+        [Fact]
+        void DUtilTraceErrorSourceFiltersOnTraceLevel()
+        {
+            DutilInitialize(&DutilTestTraceError);
+
+            CallDutilTraceErrorSource();
+
+            Dutil_TraceSetLevel(REPORT_DEBUG, FALSE);
+
+            Action^ action = gcnew Action(this, &DUtil::CallDutilTraceErrorSource);
+            Assert::Throws<Exception^>(action);
+
+            DutilUninitialize();
+        }
+
+    private:
+        void CallDutilTraceErrorSource()
+        {
+            Dutil_TraceErrorSource(__FILE__, __LINE__, REPORT_DEBUG, DUTIL_SOURCE_EXTERNAL, E_FAIL, "Error message");
+        }
+    };
+}