PropertiesUserManager pum = (PropertiesUserManager) userManager;
pum.refresh();
User modifiedUser = pum.getUserByName("user1");
assertEquals("Home directory should have been \"refresh_test\" after call to refresh().","refresh_test",modifiedUser.getHomeDirectory());
// set everything back again
users.load(new FileInputStream(USERS_FILE));
users.setProperty("ftpserver.user.user1.homedirectory", originalSetting);
users.store(new FileOutputStream(USERS_FILE), null);
pum.refresh();
//check everything is back again