@Test
     public void test() {
        if (!MongoHelper.delete(proposal, "proposals")) {
            TestHelper.failed("delete failed");
        }

        if (MongoHelper.fetch(proposal, "proposals") != null) {
            TestHelper.failed("proposal was not deleted");
        }

        System.out.println("Deleted proposal id: " + proposal.getId());
            
         TestHelper.passed();
     }