assertNotNull(roleNames);
        assertEquals(2, roleNames.length);
        assertEquals("role1", roleNames[0]);
        assertEquals("role2", roleNames[1]);
    }

    public void test_getRoleNames_empty() {
        // Test when no roles match the prefix
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            @Override
            public String getRoleSearchRolePrefix() {