Put everything back.

ctrtool/deps/libtoolchain/test/io_SubFileSystem_TestClass.h

@@ -0,0 +1,19 @@
+#pragma once
+#include "ITestClass.h"
+
+class io_SubFileSystem_TestClass : public ITestClass
+{
+public:
+	void runAllTests();
+private:
+	void testBaseFileSystemRetainsWorkingDirectory();
+	void testGetSetWorkingDirectory();
+	void testCreateFile();
+	void testOpenFile();
+	void testRemoveFile();
+	void testCreateDirectory();
+	void testRemoveDirectory();
+	void testGetDirectoryListing();
+	void testNavigateUpSubFileSystemEscape();
+	void testOpenFileOutsideSubFileSystem();
+};