assertFalse(fessUserBean.hasGroup("guests"));

        // Test with null check
        assertFalse(fessUserBean.hasGroup(null));
    }

    @Test
    public void test_hasGroups() {
        // Test with no groups
        testUser.setGroupNames(new String[] {});
        assertFalse(fessUserBean.hasGroups(new String[] { "developers", "testers" }));