1 files changed, 42 insertions, 0 deletions
diff --git a/tests/src/baseservices/threading/interlocked/exchange/exchanget.cs b/tests/src/baseservices/threading/interlocked/exchange/exchanget.cs
new file mode 100644
index 0000000000..6e54966049
--- /dev/null
+++ b/tests/src/baseservices/threading/interlocked/exchange/exchanget.cs
@@ -0,0 +1,42 @@
+// 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.
+
+using System;
+using System.Threading;
+
+public class Test
+{
+
+	public static int Main()
+	{
+                Console.WriteLine("Start");
+		int retVal = 100;
+		string STORAGE = "OLD";
+		string NOW = "NOW";
+                string ret = "";
+
+		Console.WriteLine("ref loc: " + STORAGE);
+		Console.WriteLine("Return: " + ret);
+		                
+		Console.WriteLine("Echanging in:" + NOW);
+                
+		string OLDSTORAGE = STORAGE;
+		ret = Interlocked.Exchange<string>(ref STORAGE,NOW); 
+
+		Console.WriteLine("ref loc: " + STORAGE);
+		Console.WriteLine("Return: " + ret);
+		
+		//if(ret == "" || STORAGE != NOW)
+		if(ret != OLDSTORAGE || STORAGE != NOW)
+			retVal = -1;
+
+		if (retVal == 100)
+			Console.WriteLine("Test passed");
+		else
+			Console.WriteLine("Test failed");
+
+		return retVal;
+		
+	}
+}