Add WixBuildTools.TestSupport with common testing functionality

1 files changed, 46 insertions, 0 deletions

diff --git a/src/WixBuildTools.TestSupport/Pushd.cs b/src/WixBuildTools.TestSupport/Pushd.cs
new file mode 100644
index 00000000..d0545215
--- /dev/null
+++ b/src/WixBuildTools.TestSupport/Pushd.cs
@@ -0,0 +1,46 @@
+// 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 WixBuildTools.TestSupport
+{
+    using System;
+    using System.IO;
+
+    public class Pushd : IDisposable
+    {
+        protected bool Disposed { get; private set; }
+
+        public Pushd(string path)
+        {
+            this.PreviousDirectory = Directory.GetCurrentDirectory();
+
+            Directory.SetCurrentDirectory(path);
+        }
+
+        public string PreviousDirectory { get; }
+
+        #region // IDisposable
+
+        public void Dispose()
+        {
+            this.Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (this.Disposed)
+            {
+                return;
+            }
+
+            if (disposing)
+            {
+                Directory.SetCurrentDirectory(this.PreviousDirectory);
+            }
+
+            this.Disposed = true;
+        }
+
+        #endregion
+    }
+}