user = new TestFessUser("testuser", null, new String[] {}, new String[] {});
        assertNull(user.getRoleNames());

        // Test with roles containing special characters
        roles = new String[] { "role-1", "role_2", "role.3" };
        user = new TestFessUser("testuser", roles, new String[] {}, new String[] {});
        assertArrayEquals(roles, user.getRoleNames());
    }

    @Test
    public void test_getGroupNames() {

        assertNotNull(secured);
        assertEquals("ROLE_SUPER_ULTRA_MEGA_ADMIN_WITH_VERY_LONG_NAME_FOR_TESTING_PURPOSES", secured.value()[0]);
    }

    // Test with many roles
    @Secured({ "ROLE_1", "ROLE_2", "ROLE_3", "ROLE_4", "ROLE_5", "ROLE_6", "ROLE_7", "ROLE_8", "ROLE_9", "ROLE_10" })
    static class ManyRolesClass {
    }

    @Test
    public void test_manyRoles() {