Convert ext\ to MSTest and traversal projects.

- Move ext\ unit tests to MSTest.
- MSBuildify ext projects with MSTest execution.
- Fork test support projects for MSTest:
  - WixInternal.TestSupport
  - WixInternal.Core.TestPackage

1 files changed, 94 insertions, 0 deletions

diff --git a/src/internal/WixInternal.MSTestSupport/DisposableFileSystem.cs b/src/internal/WixInternal.MSTestSupport/DisposableFileSystem.cs
new file mode 100644
index 00000000..5e4bb23f
--- /dev/null
+++ b/src/internal/WixInternal.MSTestSupport/DisposableFileSystem.cs
@@ -0,0 +1,94 @@
+// 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 WixInternal.MSTestSupport
+{
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+
+    public class DisposableFileSystem : IDisposable
+    {
+        protected bool Disposed { get; private set; }
+
+        private List<string> CleanupPaths { get; } = new List<string>();
+
+        public bool Keep { get; }
+
+        public DisposableFileSystem(bool keep = false)
+        {
+            this.Keep = keep;
+        }
+
+        protected string GetFile(bool create = false)
+        {
+            var path = Path.GetTempFileName();
+
+            if (!create)
+            {
+                File.Delete(path);
+            }
+
+            this.CleanupPaths.Add(path);
+
+            return path;
+        }
+
+        public string GetFolder(bool create = false)
+        {
+            // Always return a path with a space in it.
+            var path = Path.Combine(Path.GetTempPath(), ".WIXTEST " + Path.GetRandomFileName());
+
+            if (create)
+            {
+                Directory.CreateDirectory(path);
+            }
+
+            this.CleanupPaths.Add(path);
+
+            return path;
+        }
+
+
+        #region // IDisposable
+
+        public void Dispose()
+        {
+            this.Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (this.Disposed)
+            {
+                return;
+            }
+
+            if (disposing && !this.Keep)
+            {
+                foreach (var path in this.CleanupPaths)
+                {
+                    try
+                    {
+                        if (File.Exists(path))
+                        {
+                            File.Delete(path);
+                        }
+                        else if (Directory.Exists(path))
+                        {
+                            Directory.Delete(path, true);
+                        }
+                    }
+                    catch
+                    {
+                        // Best effort delete, so ignore any failures.
+                    }
+                }
+            }
+
+            this.Disposed = true;
+        }
+
+        #endregion
+    }
+}