1 files changed, 46 insertions, 0 deletions
diff --git a/src/libraries/Common/tests/TestUtilities/System/ThreadCultureChange.cs b/src/libraries/Common/tests/TestUtilities/System/ThreadCultureChange.cs
new file mode 100644
index 00000000000..ee799eb87f8
--- /dev/null
+++ b/src/libraries/Common/tests/TestUtilities/System/ThreadCultureChange.cs
@@ -0,0 +1,46 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#nullable enable
+using System.Globalization;
+
+namespace System.Tests
+{
+    public sealed class ThreadCultureChange : IDisposable
+    {
+        private readonly CultureInfo _origCulture = CultureInfo.CurrentCulture;
+        private readonly CultureInfo _origUICulture = CultureInfo.CurrentUICulture;
+
+        public ThreadCultureChange(string? cultureName) :
+            this(cultureName != null ? new CultureInfo(cultureName) : null)
+        {
+        }
+
+        public ThreadCultureChange(CultureInfo? newCulture) :
+            this(newCulture, null)
+        {
+        }
+
+        public ThreadCultureChange(CultureInfo? newCulture, CultureInfo? newUICulture)
+        {
+            if (newCulture != null)
+            {
+                _origCulture = CultureInfo.CurrentCulture;
+                CultureInfo.CurrentCulture = newCulture;
+            }
+
+            if (newUICulture != null)
+            {
+                _origUICulture = CultureInfo.CurrentUICulture;
+                CultureInfo.CurrentUICulture = newUICulture;
+            }
+        }
+
+        public void Dispose()
+        {
+            CultureInfo.CurrentCulture = _origCulture;
+            CultureInfo.CurrentUICulture = _origUICulture;
+        }
+    }
+}