assertNotNull(result);
        assertSame(messages, result);
        assertTrue(messages.hasMessageOf(property));
    }

    // Test success message methods with parameters
    public void test_addSuccessUploadDesignFile() {
        String property = "testProperty";
        String arg0 = "design.css";
        FessMessages result = messages.addSuccessUploadDesignFile(property, arg0);
        assertNotNull(result);