// create some files and directories
FileManager fileManager = new FileManager(blog, FileMetaData.BLOG_FILE);
fileManager.createDirectory("/", "a");
fileManager.createDirectory("/", "z");
fileManager.saveFile("/", "y.txt", "Some content");
fileManager.saveFile("/", "b.txt", "Some content");
request.setParameter("path", "/");
request.setParameter("type", FileMetaData.BLOG_FILE);
View view = action.process(request, response);