From 75a1cb75d080bdc56c351c359acdef19a9865608 Mon Sep 17 00:00:00 2001
From: Martin Ridgers <martin.ridgers@epicgames.com>
Date: Wed, 15 Sep 2021 16:32:59 +0200
Subject: Added a simple filesystem test case

---
 zencore/filesystem.cpp | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

(limited to 'zencore/filesystem.cpp')

diff --git a/zencore/filesystem.cpp b/zencore/filesystem.cpp
index 4f3ee44b0..14eef812f 100644
--- a/zencore/filesystem.cpp
+++ b/zencore/filesystem.cpp
@@ -15,6 +15,7 @@
 #include <winnt.h>
 #include <filesystem>
 
+#include <doctest/doctest.h>
 #include <gsl/gsl-lite.hpp>
 
 namespace zen {
@@ -655,4 +656,45 @@ GetRunningExecutablePath()
 #endif // ZEN_PLATFORM_WINDOWS
 }
 
+
+
+//////////////////////////////////////////////////////////////////////////
+//
+// Testing related code follows...
+//
+
+void
+filesystem_forcelink()
+{
+}
+
+TEST_CASE("filesystem")
+{
+	using namespace std::filesystem;
+
+	path BinPath = GetRunningExecutablePath();
+	CHECK(BinPath.stem() == "zencore-test");
+	CHECK(is_regular_file(BinPath));
+
+	void* Handle;
+#if ZEN_PLATFORM_WINDOWS
+	Handle = CreateFileW(BinPath.c_str(), GENERIC_READ, FILE_SHARE_READ, nullptr,
+		OPEN_EXISTING, 0, nullptr);
+	CHECK(Handle != INVALID_HANDLE_VALUE);
+#else
+	int Fd = open(BinPath.c_str(), O_RDONLY);
+	CHECK(Fd >= 0);
+	Handle = (void*)uintptr_t(Fd);
+#endif
+
+	auto FromHandle = PathFromHandle((void*)uintptr_t(Handle));
+	CHECK(equivalent(FromHandle, BinPath));
+
+#if ZEN_PLATFORM_WINDOWS
+	CloseHandle(Handle);
+#else
+	close(int(uintptr_t(Handle)));
+#endif
+}
+
 }  // namespace zen
-- 
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