assertFalse(ldapManager.changePassword("testuser", ""));
        assertFalse(ldapManager.changePassword("testuser", "   "));
    }

    @Test
    public void test_changePassword_withAdminDisabled() {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            @Override
            public boolean isLdapAdminEnabled(String username) {
                return false;
            }