@Before
    public void setUp() {
        TestHelper.signon(this);
        MongoHelper.setDB("fote");
        MongoHelper.getCollection("users").drop();
        MongoHelper.getCollection("suggestions").drop();
        
        for (User user : users) {
            if(!MongoHelper.save(user, "users")) {
                TestHelper.failed("user save failed!");
            }
        }
        for (Suggestion suggestion : suggestions) {
            if(!MongoHelper.save(suggestion, "suggestions")) {
                TestHelper.failed("suggestion save failed!");
            }
        }
    }