Adjusting interop tests for 5295 (#5296)

Co-authored-by: Clint Rutkas <crutkas@microsoft.com>

src/common/interop-tests/InteropTests.cs

@@ -0,0 +1,54 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Threading;
+using interop;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace Microsoft.Interop.Tests
+{
+    [TestClass]
+    public class InteropTests
+    {
+        private const string ServerSidePipe = "\\\\.\\pipe\\serverside";
+        private const string ClientSidePipe = "\\\\.\\pipe\\clientside";
+
+        private TwoWayPipeMessageIPCManaged clientPipe;
+
+        [TestInitialize]
+        public void Initialize()
+        {
+            clientPipe = new TwoWayPipeMessageIPCManaged(ClientSidePipe, ServerSidePipe, null);
+        }
+
+        [TestCleanup]
+        public void Cleanup()
+        {
+            clientPipe.End();
+        }
+
+        [TestMethod]
+        public void TestSend()
+        {
+            var testString = "This string is a test\n";
+            var reset = new AutoResetEvent(false);
+
+            var serverPipe = new TwoWayPipeMessageIPCManaged(
+                ServerSidePipe,
+                ClientSidePipe,
+                (string msg) =>
+                {
+                    Assert.AreEqual(testString, msg);
+                    reset.Set();
+                });
+            serverPipe.Start();
+            clientPipe.Start();
+
+            clientPipe.Send(testString);
+            reset.WaitOne();
+
+            serverPipe.End();
+        }
+    }
+}