Added testutils for use in writing tests

Currently contains helpers for managing temporary directories used in tests

4 files changed, 68 insertions, 0 deletions

diff --git a/zencore/include/zencore/testutils.h b/zencore/include/zencore/testutils.h
new file mode 100644
index 000000000..72d985d5c
--- /dev/null
+++ b/zencore/include/zencore/testutils.h
@@ -0,0 +1,31 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include <filesystem>
+
+namespace zen {
+
+std::filesystem::path CreateTemporaryDirectory();
+
+class ScopedTemporaryDirectory
+{
+public:
+	ScopedTemporaryDirectory();
+	~ScopedTemporaryDirectory();
+
+	std::filesystem::path& Path() { return m_RootPath; }
+
+private:
+	std::filesystem::path m_RootPath;
+};
+
+struct ScopedCurrentDirectoryChange
+{
+	std::filesystem::path OldPath{std::filesystem::current_path()};
+
+	ScopedCurrentDirectoryChange() { std::filesystem::current_path(CreateTemporaryDirectory()); }
+	~ScopedCurrentDirectoryChange() { std::filesystem::current_path(OldPath); }
+};
+
+}  // namespace zen
diff --git a/zencore/testutils.cpp b/zencore/testutils.cpp
new file mode 100644
index 000000000..116491950
--- /dev/null
+++ b/zencore/testutils.cpp
@@ -0,0 +1,33 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include "zencore/testutils.h"
+#include <zencore/session.h>
+#include "zencore/string.h"
+
+namespace zen {
+
+static std::atomic<int> Sequence{0};
+
+std::filesystem::path
+CreateTemporaryDirectory()
+{
+	std::error_code Ec;
+
+	std::filesystem::path DirPath = std::filesystem::temp_directory_path() / GetSessionIdString() / IntNum(++Sequence).c_str();
+	std::filesystem::remove_all(DirPath, Ec);
+	std::filesystem::create_directories(DirPath);
+
+	return DirPath;
+}
+
+ScopedTemporaryDirectory::ScopedTemporaryDirectory() : m_RootPath(CreateTemporaryDirectory())
+{
+}
+
+ScopedTemporaryDirectory::~ScopedTemporaryDirectory()
+{
+	std::error_code Ec;
+	std::filesystem::remove_all(m_RootPath, Ec);
+}
+
+}  // namespace zen
\ No newline at end of file
diff --git a/zencore/zencore.vcxproj b/zencore/zencore.vcxproj
index 150c42cd6..59b0bafcc 100644
--- a/zencore/zencore.vcxproj
+++ b/zencore/zencore.vcxproj
@@ -142,6 +142,7 @@
     <ClInclude Include="include\zencore\streamutil.h" />
     <ClInclude Include="include\zencore\string.h" />
     <ClInclude Include="include\zencore\targetver.h" />
+    <ClInclude Include="include\zencore\testutils.h" />
     <ClInclude Include="include\zencore\thread.h" />
     <ClInclude Include="include\zencore\timer.h" />
     <ClInclude Include="include\zencore\uid.h" />
@@ -181,6 +182,7 @@
     <ClCompile Include="stream.cpp" />
     <ClCompile Include="streamutil.cpp" />
     <ClCompile Include="string.cpp" />
+    <ClCompile Include="testutils.cpp" />
     <ClCompile Include="thread.cpp" />
     <ClCompile Include="timer.cpp" />
     <ClCompile Include="uid.cpp" />
diff --git a/zencore/zencore.vcxproj.filters b/zencore/zencore.vcxproj.filters
index ea0f8a912..6c6b308f8 100644
--- a/zencore/zencore.vcxproj.filters
+++ b/zencore/zencore.vcxproj.filters
@@ -42,6 +42,7 @@
     <ClInclude Include="include\zencore\postwindows.h" />
     <ClInclude Include="include\zencore\logging.h" />
     <ClInclude Include="include\zencore\session.h" />
+    <ClInclude Include="include\zencore\testutils.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="snapshot_manifest.cpp" />
@@ -74,6 +75,7 @@
     <ClCompile Include="logging.cpp" />
     <ClCompile Include="intmath.cpp" />
     <ClCompile Include="session.cpp" />
+    <ClCompile Include="testutils.cpp" />
   </ItemGroup>
   <ItemGroup>
     <Filter Include="CAS">