Initial add of PowerRename from SmartRename repo (#499)

* Initial add of PowerRename from SmartRename repo

src/modules/powerrename/unittests/TestFileHelper.cpp

@@ -0,0 +1,73 @@
+#include "stdafx.h"
+#include "TestFileHelper.h"
+#include <iostream>
+#include <fstream>
+#include <Objbase.h>
+
+namespace fs = std::filesystem;
+
+
+
+CTestFileHelper::CTestFileHelper()
+{
+    _CreateTempDirectory();
+}
+CTestFileHelper::~CTestFileHelper()
+{
+    _DeleteTempDirectory();
+}
+
+// Pass a relative path which will be appended to the temp directory path
+bool CTestFileHelper::AddFile(_In_ const std::wstring path)
+{
+    fs::path newFilePath = _tempDirectory;
+    newFilePath.append(path);
+    std::ofstream ofs(newFilePath);
+    ofs.close();
+    return true;
+}
+
+// Pass a relative path which will be appended to the temp directory path
+bool CTestFileHelper::AddFolder(_In_ const std::wstring path)
+{
+    fs::path newFolderPath = _tempDirectory;
+    newFolderPath.append(path);
+    return fs::create_directory(fs::path(newFolderPath));
+}
+
+fs::path CTestFileHelper::GetFullPath(_In_ const std::wstring path)
+{
+    fs::path fullPath = _tempDirectory;
+    fullPath.append(path);
+    return fullPath;
+}
+
+bool CTestFileHelper::PathExists(_In_ const std::wstring path)
+{
+    fs::path fullPath = _tempDirectory;
+    fullPath.append(path);
+    return fs::exists(fullPath);
+}
+
+bool CTestFileHelper::_CreateTempDirectory()
+{
+    // Initialize to the temp directory
+    _tempDirectory = fs::temp_directory_path();
+
+    // Create a unique folder name
+    GUID guid = { 0 };
+    CoCreateGuid(&guid);
+
+    wchar_t uniqueName[MAX_PATH] = { 0 };
+    StringFromGUID2(guid, uniqueName, ARRAYSIZE(uniqueName));
+
+    _tempDirectory.append(uniqueName);
+
+    return fs::create_directory(_tempDirectory);
+}
+
+void CTestFileHelper::_DeleteTempDirectory()
+{
+    fs::remove_all(_tempDirectory);
+}
+